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THE
METAL PAINT
   SPECIALISTS

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            STING METAL C




www.hammerite.co.nz / www.hobeca.co.nz
Hobeca Trading Co. Ltd., PO Box 10060, Auckland 1446, New Zealand
Phone: (09) 630-4602
THE
        METAL PAINT
          SPECIALISTS

          LON                     RE
             G   LASTING METAL CA




HAMMERITE PAINT TECHNICAL GUIDE
HAMMERITE PAINT TECHNICAL GUIDE

  ‘DIRECT TO RUST’ AND ‘DIRECT TO GALV’ PAINT

Hammerite - protecting your metal
Hammerite offers an easy to understand range of paints to enable you to protect and
rejuvenate metal. Hammerite offers technical excellence and quality you can count on.
For information on the full range of Hammerite products and colour range please refer
to the Hammerite Guide To Total Metalcare.
HAMMERITE ‘DIRECT TO RUST’                             Better protection & corrosion resistance
  Up to 8 years rust protection when applied           Thicker product forces consumer to apply sufficient
  as instructed                                        product
• Strong adhesion to ferrous metal surfaces            70microns dry film thickness means only 1 coat
                                                       needed over previously painted metal
  Apply direct to rust
                                                       Higher film build, therefore added protection
  No primer needed on iron or steel
  2 coats recommended                                  Easier to apply
  Silicone rich surface sheds water and dirt quickly
                                                       Longer wet-edge/working time = improved
  Sag resistant                                        applicationproperties (larger surface areas made
                                                       easier).
  Rollable
  White Spirit Based                                   Surface dry
  Available in Hammered, Smooth, and Satin finishes.   In 2 hours, re-coat after 4 hours (depending on
  Available in aerosol                                 conditions)
HAMMERITE ‘DIRECT TO GALV’                                    Easy to apply
  Only one coat required*                                      Specially formulated for application straight on to the
                                                               metal as primer and topcoat in one.
  Apply direct to metal
                                                               Higher film build, means only one coat is need in most
  No primer needed in most cases                               cases.
  Long lasting
  Silicone rich surface sheds water and dirt quickly           Surface dry
  Rollable                                                     4 hours, re-coat (if required) after 6 hours (depending
                                                               on conditions)
  Easy to apply
  Low odour                                                    *Over a strongly contrasting colour two coats may be required.
                                                               The second coat should be applied after 6 hours.
  White Spirit Based
  Available in Smooth gloss finish.




FREQUENTLY ASKED QUESTIONS

1) Can I spray (with a conventional                            3) What finishes are available?
spray gun) or roller apply rather than use                     Direct To Rust: The range is available in Smooth,
a brush?                                                       Hammered, Satin and aerosol.
Roller application will give good results in terms of          Direct To Galv: This is available in Smooth gloss.
appearance due to the fact that the paint stays liquid
and wet for a short time allowing easy spreading over a         4) Should someone swallow or get
large area. It is not necessary to thin the paint at all for   Hammerite in their eyes what is the
roller application                                             recommended treatment?
Direct To Rust: For conventional spraying the thinning
rate is 15% with white spirit. To achieve best results         The medical advice for all formulations is the same.
leave one hour between coats to minimise any sagging           See the Material Safety Data Sheets.
or runs.
                                                               5) What happens if you were to stir the
Direct To Galv: For conventional spraying the thinning
rate is 25% with White Spirit. To achieve best results
                                                               Hammerite thoroughly as this is not
leave one hour between coats to minimise any sagging           recommended on pack?
or runs.                                                       Vigorous stirring will not affect the paint detrimentally.
                                                               The thixotropy is sufficient to recover.
2) Which thinner can be used?
Direct To Rust:                                                6) Can Hammerite be repainted with gloss
For spray application:                                         paint with alkyd?
White spirit.                                                  Direct To Rust: For the Smooth finish generally yes, but
For washing brushes:                                           we recommended doing test patch first. With regard to
Hammerite Brush Cleaner & Thinners or white spirit.            the Hammered finish and smooth gold / silver, they can
Direct To Galv:                                                be over-coated with gloss paint but special precaution
For spray application:                                         will be needed. Previous coating will need to be cleaned
White spirit.                                                  / prepared (sanding) well and possibly a suitable primer
For washing brushes:
White spirit or Hammerite Brush Cleaner & Thinners.




                                                                                                           THE
                                                                                              METAL PAINT
                                                                                                   SPECIALISTS

                                                                                                  LO N
                                                                                                       G LA               A RE
                                                                                                            STING METAL C
may be needed to stop any contamination of the new           For sloping roofs, this product has not been tested
paint. Water based products in particular will need          specifically on this application so application would be
treating carefully and a test area may be required before    at the discretion of the user.
full scale application.
Direct To Galv: Yes, but we recommended doing test           14) Can Hammerite be applied to ferrous
patch first                                                  metal?
                                                             Hammerite Direct To Rust: Yes
8) Does Hammerite also need a primer for
                                                             Hammerite Direct To Galv: should not be applied direct
non-ferrous metal?                                           to ferrous metal as it does not contain anti-corrosives.
Direct To Rust: In order to use this on non ferrous          A suitable ferrous metal primer should first be applied
(non rusting) metal you must first apply one coat of         (Hammerite No1 Rustbeater) before application of
Hammerite Special Metals Primer.                             Hammerite Galv, but the preferred recommendation
Direct To Galv: No primer is required on weathered/old       would be to use Hammerite Direct to Rust.
galvanized steel or aluminum, copper or brass. Please
refer to back of pack instructions in order to prepare the
surfaces correctly.

9) What temperature can Hammerite resist?
80°C continuous, 150°C intermittent.

10) Can Hammerite be used under water?
No

11) After how many years should
Hammerite be repainted?
Direct To Rust: Current test shows performance of up
to eight years corrosion protection under “normal”
conditions, in high UV areas e.g. close to expanses of
water, it may be necessary to restore the appearance
with a single maintenance coat after roughly 3 years
depending on circumstances, particularly in Southern
European markets with high UV areas.
Direct To Galv: The appearance should be checked after
2 years, depending on the conditions the metal has
existed in (e.g. hard frosts, laying snow on paint film,
high UV areas) the coating may or may not need to be
rubbed back and one maintenance coat applied.

12) What should be used to degrease
galvanised steel?
The standard recommendation would be to use soapy
water which would remove any salts which might
encourage rusting where the substrate has lost its zinc
coating.

13) Can Hammerite Direct To Galv be
applied to roofs / flat roofs?
The product is more susceptible to wet adhesion failure
which rules out flat roofs as they are totally exposed
and it would be likely to find water sitting on the
coating for long periods.
TECHNICAL DATA

HAMMERITE DIRECT TO RUST METAL PAINT
      Smooth • Hammered • Satin • Aerosol




                     Gloss




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                                                      THE
                                            METAL PAINT
                                             SPECIALISTS

                                             LO N
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                                                       STING METAL C
DESCRIPTION                                                  PAINTED METAL SURFACES:

Hammerite paint is a single pack, air drying corrosion        Abrade the painted surface to remove contaminants/
resistant and decorative coating. It is based on              gloss.
synthetic resins and is suitably pigmented for optimum        Wash down thoroughly with diluted detergent.
weathering properties. Hammerite is fast drying and
capable of multi-coat application any time after 4 hours.     Rinse with clean water.
The specially selected resins impart a gloss or satin         Allow to dry.
finish which resists dirt pick up. Hammerite has excellent
wetting properties making it tolerant to poorly prepared      Test for compatability with existing paint by painting
ferrous surfaces. It is available in Smooth, Hammered         a small test area first. Any compatibility problems will
and Satin finish and in an aerosol.                           be evident within the first hour after application.

                                                             SHINY, SMOOTH METAL SURFACES
USE
                                                              Extra abrasion is required to ensure maximum
As a corrosion resistant and decorative coating for
                                                              adhesion.
ferrous and non-ferrous metals, wood and certain
plastics.                                                     Degrease with Hammerite Brush Cleaner.

APPEARANCE                                                   UNPAINTED GALVANISED/ALUMINIUM/
                                                             NON FERROUS METAL SURFACES
Hammerite Smooth - a smooth gloss.
Note: Gold, Silver and Copper are metallic sheen              To ensure maximum adhesion on aluminium and non
finishes.                                                     ferrous metal surfaces use Hammerite Special Metals
                                                              Primer.
Hammerite Hammered - a smooth gloss
incorporating a hammered pattern.                            Notes:
                                                              In many areas, industrial and coastal districts
Note: Pattern will vary depending on temperature,             in particular, soluble salts may contaminate the
colour, substrate and method of application.                  substrate. It is essential to scrub and rinse repeatedly
Hammerite Satin - a matt finish                               with clean water to remove this contamination.
                                                              Extremely rough or pitted ferrous metals will benefit
COLOUR MIXING                                                 from the application of Hammerite No. 1 Rust Beater
Hammerite Hammered, Smooth and Satin Finishes are             before using Hammerite paint.
produced to Hammerite Products Limited’s own in-house
                                                             OTHER SURFACES:
colour standards and are not matched to BS 4800 or RAL
standards.                                                   PLASTICS:
All Hammerite Hammered colours can be intermixed               Hammerite paint may be used on certain types of
though the pattern may be affected.                            plastic such as drainpipes and guttering.
All Hammerite Smooth colours can be intermixed except        WOOD:
for Smooth Gold, Silver and Copper.
                                                              Bare wood
 SURFACE PREPARATION                                          - Apply a water based acrylic wood primer before
                                                                applying Hammerite paint.
 FOR RUSTED METAL SURFACES:
                                                              Painted wood:
  Minimum standard for adequate performance -
  St 2 (Swedish Standard SIS 05 59 00). This should be        - Abrade the painted surface to remove
  achieved by abrasion with coarse emery paper or               contaminants/gloss.
  needle gun/grinder, where applicable.                       - Wash down thoroughly with diluted detergent.
                                                              - Rinse with clean water.
  All surfaces must be dry and free from loose rust, dirt,
  dust, grease and salt.                                      - Allow to dry.

BARE METAL SURFACES:

  Degrease with Hammerite Brush Cleaner.
RECOMMENDED FILM THICKNESS                                      Set professional spray gun to between 25/35 psi
                                                                (approximately 2 Bar).
  Minimum 200 microns wet.
                                                                Use a full fan spray at maximum spray volume.
  Minimum 100 microns dry.
                                                                Apply 3-4 thin coats in quick succession allowing
The number of coats required to achieve this will vary          approximately 1 hour between coats. The final coat
depending on substrate and method of application.               should be sprayed heavily enough to flow to a glossy
                                                                finish avoiding runs and sags.
COVERING CAPACITY
                                                               Airless Spray
5 sq metres/litre for two coats at recommended dry
                                                                 If necessary Thin Hammerite metal finish with
film thickness (brushing).
                                                                 15% Hammerite Brush Cleaner & Thinners
APPLICATION                                                      or white spirit.
                                                                Fluid pressure: 2500 - 3000 psi (approximately
Apply at least 2 coats leaving at least 4 hours between         170 Bar).
coats.
                                                                Nozzle size: 375-500 microns/0.015 - 0.020”.
Minimum application temperature : 3°C above dew
point                                                           Apply 2-3 coats, leaving each coat for approximately
                                                                1 hour or until it is touch dry before applying further
Ideal application temperature : 8-30°C (46-86°F)                coats.
Maximum relative humidity : 85%
                                                               For both conventional spray and airless spray:
APPLICATION METHODS                                              Shake spray gun before and during use to ensure
                                                                 an even colour.
Brush - Suitable for small flat areas and intricate
wrought ironwork.                                               For best results use Hammerite Brush Cleaner
                                                                & Thinners or white spirit.
  Stir before use.
                                                                Aerosol - Suitable for touch up/small applications.
  At least two coat coverage is essential to bare or
  rusty metal to achieve film thickness for corrosion           Store aerosol at room temperature for two hours prior
  resistance, however Hammerite paint will take longer          to use.
  to dry and sag if over applied.
                                                                Shake can vigorously for a full three minutes AFTER
  Ensure edges and corners are adequately covered,              the agitator ball is heard. Use a vertical rather than a
  these are at greatest risk of premature rusting.              horizontal motion.
Roller - Suitable for larger flat areas.                        Apply light even coats from a distance of
 Hammerite is designed to be ready for use.                     approximately 15 cms (6”). To avoid runs and sags
                                                                keep the aerosol moving. Do not concentrate the
 Hammerite paint can be thinned to ease roller                  spray in any one spot.
 application. Use Hammerite Brush Cleaner or white
 spirit at a ratio of 9 parts paint to 1 part Brush Cleaner.    Several thin coats are recommended, particularly on
                                                                intricate and vertical surfaces. Allow approximately
 The edges should be brushed in first and the                   15 minutes between coats.
 remaining area’s quickly filled in with the roller.
                                                                To avoid blockages, invert can and spray for two
 For best results apply liberally using short, quick            seconds between coats and after final use.
 strokes.

Spray - Suitable for large flat and uneven surfaces
Note: The following contain silicones:
  Hammerite Hammered finish - all colours
  Hammerite Smooth finish – gold, silver and copper.

Conventional Spray
  Thin Hammerite metal finish with 15% Hammerite
  Brush Cleaner & Thinners or white spirit.

                                                                                                       THE
                                                                                          METAL PAINT
                                                                                              SPECIALISTS

                                                                                              LO N
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                                                                                                        STING METAL C
HOW TO ENSURE MAXIMUM PERFORMANCE WHEN SPRAY FINISHING

 Problem                                Cause                                     Remedy
 1. Colours or shade varies.            Pigment settling in gun.                  Shake gun more frequently and
                                                                                  apply further coats.
 2. Rough ‘sandpapery’ appearance       Paint drying too quickly.                 Check for blocked jets or air vents in
 lacking gloss.                         Gun pressure may be too high.             container.
                                                                                  Reduce gun pressure.

 3. Excessive consumption.              Pressure too high causing ‘bounce’.       Reduce gun pressure.
                                        Conditions too windy.                     Wait for still conditions.



 4. Paint runs.                         Excessive thickness in one coat.          If not too severe wait 60 minutes
                                                                                  and re-spray.
                                                                                  If very bad, allow to full dry, level
                                                                                  off with emery and re-spray




 Hammered Finish Only
 5. Pattern very small or no pattern    Final coat too thin.                      Apply a thicker coat.
 at all.



 6. Surface is uneven with pin-holes    Temperature too low causing pattern Minimum recommended application
 or craters.                            drift.                              temperature 10°C (50°F).



DRYING TIME                                                    (120°F). Do not pierce or burn even after use.

Touch/Surface Dry: 2 hours approximately                       CORROSION RESISTANCE
Intercoat Period: After 4 hours
                                                               Passes 1600hours (8 year equivalent) ASTM B117 1973
Note: Times may change depending on weather                    at 100 microns dry film thickness ASTM D609, Type2
conditions                                                     A366 steel panels.
CLEANING EQUIPMENT                                             IMPACT RESISTANCE
Use Hammerite Brush Cleaner.                                   Passes 15cm (face) BS3900, E7 falling ball 15”/lb 7 days
                                                               at 100 microns dry film thickness.
SHELF LIFE AND STORAGE CONDITIONS
Tins                                                           ADHESION
Minimum two years at 20°C (70°F) stored in original            Passes BS 3900 E6, 7 days at 100 microns dry film
unopened containers. Hammerite paint should be stored          thickness.
in a dry, well ventilated area. Protect from extremes of
temperature, ie frost and strong sunlight.                     CHEMICAL RESISTANCE
Aerosol
                                                               Resists splashing by dilute acids/alkalis (10% max),
Minimum two years at 20°C (70°F) in original unopened
                                                               petrol, diesel and all common building materials when
containers. Pressurised container - protect from sunlight
                                                               fully cured.
and do not expose to temperatures exceeding 50°C
TEMPERATURE RESISTANCE
Limits: Minus 20°C (-4°F) to 150°C (300°F) maximum
intermittent when fully cured. Continuous 80°C (180°F)
when fully cured.
Note: Colours may fade after prolonged exposure at
temperatures exceeding 50°C (120°F).

VISCOSITY
5.5 poise - 8.0 poise at 25°C (ICI cone and plate
viscometer) depending on colour/finish.

SPECIFIC GRAVITY
0.96 - 1.10 at 20°C depending on colour/finish.

UV RESISTANCE
Hammerite will resist the effects of UV damage.
Resistance time could be reduced in hot climates or
south facing aspects where the extremes of UV and
temperature are present.
Note: All decorative alkyd based paints will fade or
chalk when exposed to heat and UV radiation.

SERVICE LIMITATIONS
 Not suitable for use on equipment which may operate
 at 150°C (300°F) or above.
 Not suitable for use in contact with drinking water or
 foodstuffs.
 Not suitable for permanent immersion.

 VOC LEVEL
Hammerite comforms to EU Directive 2004/42/CE
for VOC. The products shown above are classified as
Category A/i 600g/l (2007) / 500g/l (2010).
The product contains maximum of 499 g/l.

DISCLAIMER
To the best of our knowledge and belief the infomation
given in this technical data is accurate at the date
of issue. It is the user’s responsibility to satisfy
themselves as to the application of the product and/
or recommendations given for users particular use of
Hammerite Metal Paint. This technical data should be
read in conjunction with the Hammerite Metal Paint
materials safety data sheet SDSHM101 (12/2005).




                                                                    THE
                                                          METAL PAINT
                                                           SPECIALISTS

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                                                                     STING METAL C
TECHNICAL DATA


 HAMMERITE DIRECT TO GALV PAINT




              Gloss




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DESCRIPTION                                                  PAINTED METAL SURFACES:

Hammerite Direct to Galv Paint is a single pack, air          Abrade the painted surface to remove contaminants/
drying decorative coating for application to Galvanised       gloss.
Steel and other non-ferrous metals without the need
                                                              Wash down thoroughly with Hammerite Brush Cleaner,
for a primer. The product uses an alkyd designed for
                                                              metal degreaser or diluted detergent (preferred
general purpose high quality air-drying and force
                                                              option) both for removal of surface contaminants and
drying industrial finishes and exhibits properties of fast
                                                              soluble salts.
surface dry, excellent through dry in thick films, early
recoatability and minimum yellowing. Hammerite Direct         Rinse with clean water.
to Galv can be applied by brush, roller and spray. The
                                                              Allow to dry.
specially selected resin imparts a gloss finish which
resists dirt pick up. Hammerite Direct to Galv Paint is       Test for compatibility with existing paint by painting a
designed to give excellent one coat coverage.                 small test area first. Any compatibility problems will
                                                              be evident within the first hour after application.
USE
                                                             SHINY, SMOOTH METAL SURFACES
As a decorative coating for galvanised and non-ferrous
metals, wood and certain plastics.                            Abrasion is required to ensure maximum adhesion.
                                                              Degrease with Hammerite Brush Cleaner, metal
APPEARANCE                                                    degreaser or diluted detergent (preferred option) both
                                                              for removal of surface contaminants and soluble salts.
Hammerite Direct to Galv Paint - a smooth gloss.
Note: Bronze, Silver and Copper are metallic sheen            Rinse with clean water.
finishes..
                                                              Allow to dry.
COLOUR RANGE                                                  Apply a phosphoric acid etch primer (mordant
                                                              solution) to convert the galvanised steel zinc surface
See colour chart.                                             before application of DTG.
Note: Hammerite Direct to Galv Paint Finishes are
produced to Hammerite Products Limited’s own                 FOR RUSTED METAL SURFACES:
in-house colour standards and are not matched to
BS 4800 or RAL standards.                                    For rusty steel or iron: Hammerite Direct To Galv is not
                                                             suitable for ferrous metal. Use Hammerite Direct To Rust
COLOUR MIXING                                                Paint.

Do not mix Hammerite Direct to Galv Paint with any           For light white rust on galvanised steel (light powdery
other Hammerite finish’s.                                    deposit): Wipe clean with a paint brush, abrade, and
                                                             degrease as above.
SURFACE PREPARATION                                          For moderate white rust on galvanised steel (darkening
                                                             and apparent etching of the surface): Wire brush
BARE METAL SURFACES:                                         affected area to remove white corrosion, then use a
                                                             cloth which has been wet with a standard aluminium
 New galvanised steel should be weathered until dull
                                                             paint to wipe a thin film on to the affected area. Then
 before application of DTG (this is true of both spangled
                                                             abrade, and degrease as above.
 and non-spangled galvanised steel).
                                                             For severe corrosion on galvanised steel (severe oxide
 Abrade giving a key to subsequent coatings. This is
                                                             deposits which look brown or black and/or red rust,
 essential to remove any pre-treatment factory finish
                                                             (this means the zinc coating has been lost). Apply a
 (chromate pretreatment). Abrasion should be with
                                                             standard zinc rich paint follow the on pack instructions.
 coarse sandpaper rather than fine to ensure removal
                                                             Then following the zinc rich paint over coating
 of this coating.
                                                             instructions apply Hammerite Direct To Galv on top. It is
 Degrease with Hammerite Brush Cleaner, metal                advisable to test patch a small area before applying to
 degreaser or diluted detergent (preffered option) both      the entire surface.
 for removal of surface contaminants and soluble salts.
 Rinse with clean water.
 Allow to dry.
                                                                                                     THE
                                                                                        METAL PAINT
                                                                                            SPECIALISTS

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UNPAINTED ALUMINIUM/NON FERROUS                             APPLICATION METHODS
METAL SURFACES
                                                            Brush - Suitable for small areas.
 To ensure maximum adhesion on aluminium and non              Stir before use.
 ferrous metal surfaces use Hammerite Special Metals
 Primer.                                                     One coat will normally be sufficient but additional
                                                             coats may be required when applying over contrasting
Notes: In many areas, industrial and coastal districts in    colours.
particular, soluble salts may contaminate the substrate.
It is essential to scrub and rinse repeatedly with dilute    Ensure edges and corners are adequately covered.
detergent and rinse with clean water to remove this
                                                            Roller - Suitable for larger flat areas.
contamination.
                                                             Hammerite Direct to Galv Paint is designed to be
OTHER SURFACES:                                              ready for use.

PLASTICS                                                     Hammerite Direct to Galv Paint can be thinned to ease
                                                             roller application. Use Hammerite Brush Cleaner or
  Hammerite paint may be used on certain types of            white spirit at a ratio of 9 parts paint to 1 part Brush
  plastic such as drainpipes and guttering.                  Cleaner or white spirit.
WOOD                                                         The edges should be brushed in first and the
 Bare wood                                                   remaining area’s quickly filled in with the roller.
 - apply a water based acrylic wood primer before            For best results apply liberally using short, quick
   applying Hammerite paint.                                 strokes.
 Painted wood:
                                                            Spray - Suitable for large flat and uneven surfaces
 - Abrade the painted surface to remove
   contaminants/gloss.                                      Note: The following contain silicones:

 - Wash down thoroughly with diluted detergent.              Hammerite Direct to Galv Paint – bronze, silver and
                                                             copper.
 - Rinse with clean water.
                                                            Conventional Spray
 - Allow to dry.
                                                              Thin Hammerite Direct to Galv Paint with up to 25%
RECOMMENDED FILM THICKNESS                                    white spirit

 Minimum 100 microns wet.                                    Set professional spray gun to between 25/35 psi
                                                             (approximately 2 Bar).
 Minimum 50 microns dry.
                                                             Use a full fan spray at maximum spray volume.
One coat will normally be sufficient although additional
coats may be required when applying over contrasting         One coat will normally give full coverage but where
colours.                                                     additional coats are required over contrasting colours
                                                             leave approximately 1 hour between coats. The final
COVERING CAPACITY                                            coat should be sprayed heavily enough to flow to a
                                                             glossy finish avoiding runs and sags.
Up to 14sq metres/litre for one coat at recommended
                                                            Airless Spray
dry film thickness (brushing).
                                                              Thinning not required but if necessary thin Hammerite
APPLICATION                                                   Direct to Galv Paint with up to 25% white spirit.

Only one coat is usually required. However when               Fluid pressure: 2500 - 3000 psi (approximately
applying over a contrasting colour a 2nd coat may be          170 Bar).
needed. Leave at least 4 hours between coats.                 Nozzle size: 375-500 microns/0.015 - 0.020”.
Minimum application temperature: 3°C above                    One coat will normally give full coverage but where
dew point                                                     additional coats are required over contrasting colours
Ideal application temperature: 8-30°C (46-86°F)               leave approximately 1 hour between coats or until
Maximum relative humidity: 85%                                it is touch dry before applying further coats.
For both conventional spray and airless spray:
  Shake spray gun before and during use to ensure
  an even colour.
  For best results use only white spirit.

 HOW TO ENSURE MAXIMUM PERFORMANCE WHEN SPRAY FINISHING


  Problem                                   Cause                                 Remedy
  1. Colours or shade varies.               Pigment settling in gun.              Shake gun more frequently and
                                                                                  apply further coats.
  2. Rough ‘sandpapery’ appearance          Paint drying too quickly.             Check for blocked jets or air vents in
  lacking gloss.                            Gun pressure may be too high.         container.
                                                                                  Reduce gun pressure.

  3. Excessive consumption.                 Pressure too high causing ‘bounce’.   Reduce gun pressure.
                                            Conditions too windy.                 Wait for still conditions.



  4. Paint runs.                            Excessive thickness in one coat.      If not too severe wait 60 minutes
                                                                                  and re-spray.
                                                                                  If very bad, allow to fully dry, level
                                                                                  off with emery and re-spray.




DRYING TIME
Touch/Surface Dry 1-2 hours
Intercoat Period After 4 hours
Note: Times may change depending on weather
conditions

CLEANING EQUIPMENT
Use Hammerite Brush Cleaner or white spirit.

SHELF LIFE AND STORAGE CONDITIONS
Tins
Minimum two years at 20°C (70°F) stored in original
unopened containers. Hammerite Direct to Galv Paint
should be stored in a dry, well ventilated area. Protect
from extremes of temperature, ie frost and strong
sunlight.

IMPACT RESISTANCE
Passes 15cm (face) BS3900, E7 falling ball 15”/lb 7 days
at 50 microns dry film thickness.

                                                                                                      THE
                                                                                         METAL PAINT
                                                                                              SPECIALISTS

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ADHESION
Galvanised Steel provides a difficult surface on which to achieve good adhesion. Good surface preparation will
prevent most types of potential adhesion failure. The table below may be used as a guide to the causes of adhesion
failure and the solution to avoid this occurrence before use of Hammerite Direct to Galv Paint:



 Cause of adhesion failure                                Remedy

 Surface contamination – oil and grease                   Degrease with dilute detergent

 Formation of soluble salts (particularly applicable      Degrease with dilute detergent
 to weathered galv)


 Chromate factory pre-treatment                           Abrade to remove

 New galv with large and bright spangle predominatly      Weather until dull before application of DTG or use
 zinc                                                     phosphoric acid etch primer followed by Special
                                                          Metals Primer



 Corrosion of the zinc                                    Refer to Surface Preparation section.

 Etch primers or ‘mordant’ solutions                      Only use phosphoric acid etch primer – other acid
                                                          based primers do not cause adhesion failure but will
                                                          affect the thickness of the galvanised coating


 Reaction between DTG and zinc (formation of fatty        This is inevitable but sound surface preparation
 acid soaps)                                              (degrease and abrade) and the selection of alkyd for
                                                          this product maximises the adhesive strength of the
                                                          product. Prolonged performance will result from the
                                                          use of Special Metals Primer.


 105%                                                     Any flaws in the painted substrate (scratches etc)
                                                          can allow water to get under the dry paint film to
                                                          encourage lifting of the paint particularly where water
                                                          is allowed to stand or pool on the surface Sound
                                                          surface preparation will prevent the product coming
                                                          off in sheets where this does occur. High risk surfaces
                                                          should not be recommended for application with this
                                                          product (flat roofs must be avoided).
CHEMICAL RESISTANCE
Resists splashing by dilute acids/alkalis (10% max),
petrol, diesel and all common building materials when
fully cured.

TEMPERATURE RESISTANCE
Limits:
Minus 20°C (-4°F) to 150°C (300°F) maximum
intermittent when fully cured.
Continuous 80°C (180°F) when fully cured.
Note: Colours may fade after prolonged exposure at
temperatures exceeding 50°C (120°F).

VISCOSITY
5.0 poise - 8.0 poise at 25°C (ICI cone and plate
viscometer) depending on colour/finish.

SPECIFIC GRAVITY
0.90 - 1.16 at 20°C depending on colour/finish.

UV RESISTANCE
Hammerite Direct to Galv Paint will resist the effects of
UV damage. The UV resistance exposure time however
could be reduced in hot climates or south facing aspects
where the extremes of UV and temperature are present.
Note: All decorative alkyd based paints will fade
or chalk when exposed to heat and UV radiation.

SERVICE LIMITATIONS
  Not suitable for use on equipment which may operate
  at 150°C (300°F) or above.
  Not suitable for use in contact with drinking water
  or foodstuffs.
  Not suitable for permanent immersion.

VOC LEVEL
Hammerite conforms to EU Directive 2004/42/CE
for VOC. The products shown above are classified as
Category A/i 600g/l (2007)/500g/l(2010). The product
contains maximum of 499 g/l.


DISCLAIMER
To the best of our knowledge and belief the
information given in this technical data sheet
is accurate at the date of issue. It is the user’s
responsibility to satisfy themselves as to the
application of the product and/or recommendations
given for users particular use of Hammerite Direct to
Galv Paint.                                                           THE
                                                            METAL PAINT
                                                             SPECIALISTS

                                                             LO N
                                                                  G LA               A RE
                                                                       STING METAL C

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Hammerite Technical Data

  • 1. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C www.hammerite.co.nz / www.hobeca.co.nz Hobeca Trading Co. Ltd., PO Box 10060, Auckland 1446, New Zealand Phone: (09) 630-4602
  • 2. THE METAL PAINT SPECIALISTS LON RE G LASTING METAL CA HAMMERITE PAINT TECHNICAL GUIDE
  • 3. HAMMERITE PAINT TECHNICAL GUIDE ‘DIRECT TO RUST’ AND ‘DIRECT TO GALV’ PAINT Hammerite - protecting your metal Hammerite offers an easy to understand range of paints to enable you to protect and rejuvenate metal. Hammerite offers technical excellence and quality you can count on. For information on the full range of Hammerite products and colour range please refer to the Hammerite Guide To Total Metalcare. HAMMERITE ‘DIRECT TO RUST’ Better protection & corrosion resistance Up to 8 years rust protection when applied Thicker product forces consumer to apply sufficient as instructed product • Strong adhesion to ferrous metal surfaces 70microns dry film thickness means only 1 coat needed over previously painted metal Apply direct to rust Higher film build, therefore added protection No primer needed on iron or steel 2 coats recommended Easier to apply Silicone rich surface sheds water and dirt quickly Longer wet-edge/working time = improved Sag resistant applicationproperties (larger surface areas made easier). Rollable White Spirit Based Surface dry Available in Hammered, Smooth, and Satin finishes. In 2 hours, re-coat after 4 hours (depending on Available in aerosol conditions)
  • 4. HAMMERITE ‘DIRECT TO GALV’ Easy to apply Only one coat required* Specially formulated for application straight on to the metal as primer and topcoat in one. Apply direct to metal Higher film build, means only one coat is need in most No primer needed in most cases cases. Long lasting Silicone rich surface sheds water and dirt quickly Surface dry Rollable 4 hours, re-coat (if required) after 6 hours (depending on conditions) Easy to apply Low odour *Over a strongly contrasting colour two coats may be required. The second coat should be applied after 6 hours. White Spirit Based Available in Smooth gloss finish. FREQUENTLY ASKED QUESTIONS 1) Can I spray (with a conventional 3) What finishes are available? spray gun) or roller apply rather than use Direct To Rust: The range is available in Smooth, a brush? Hammered, Satin and aerosol. Roller application will give good results in terms of Direct To Galv: This is available in Smooth gloss. appearance due to the fact that the paint stays liquid and wet for a short time allowing easy spreading over a 4) Should someone swallow or get large area. It is not necessary to thin the paint at all for Hammerite in their eyes what is the roller application recommended treatment? Direct To Rust: For conventional spraying the thinning rate is 15% with white spirit. To achieve best results The medical advice for all formulations is the same. leave one hour between coats to minimise any sagging See the Material Safety Data Sheets. or runs. 5) What happens if you were to stir the Direct To Galv: For conventional spraying the thinning rate is 25% with White Spirit. To achieve best results Hammerite thoroughly as this is not leave one hour between coats to minimise any sagging recommended on pack? or runs. Vigorous stirring will not affect the paint detrimentally. The thixotropy is sufficient to recover. 2) Which thinner can be used? Direct To Rust: 6) Can Hammerite be repainted with gloss For spray application: paint with alkyd? White spirit. Direct To Rust: For the Smooth finish generally yes, but For washing brushes: we recommended doing test patch first. With regard to Hammerite Brush Cleaner & Thinners or white spirit. the Hammered finish and smooth gold / silver, they can Direct To Galv: be over-coated with gloss paint but special precaution For spray application: will be needed. Previous coating will need to be cleaned White spirit. / prepared (sanding) well and possibly a suitable primer For washing brushes: White spirit or Hammerite Brush Cleaner & Thinners. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 5. may be needed to stop any contamination of the new For sloping roofs, this product has not been tested paint. Water based products in particular will need specifically on this application so application would be treating carefully and a test area may be required before at the discretion of the user. full scale application. Direct To Galv: Yes, but we recommended doing test 14) Can Hammerite be applied to ferrous patch first metal? Hammerite Direct To Rust: Yes 8) Does Hammerite also need a primer for Hammerite Direct To Galv: should not be applied direct non-ferrous metal? to ferrous metal as it does not contain anti-corrosives. Direct To Rust: In order to use this on non ferrous A suitable ferrous metal primer should first be applied (non rusting) metal you must first apply one coat of (Hammerite No1 Rustbeater) before application of Hammerite Special Metals Primer. Hammerite Galv, but the preferred recommendation Direct To Galv: No primer is required on weathered/old would be to use Hammerite Direct to Rust. galvanized steel or aluminum, copper or brass. Please refer to back of pack instructions in order to prepare the surfaces correctly. 9) What temperature can Hammerite resist? 80°C continuous, 150°C intermittent. 10) Can Hammerite be used under water? No 11) After how many years should Hammerite be repainted? Direct To Rust: Current test shows performance of up to eight years corrosion protection under “normal” conditions, in high UV areas e.g. close to expanses of water, it may be necessary to restore the appearance with a single maintenance coat after roughly 3 years depending on circumstances, particularly in Southern European markets with high UV areas. Direct To Galv: The appearance should be checked after 2 years, depending on the conditions the metal has existed in (e.g. hard frosts, laying snow on paint film, high UV areas) the coating may or may not need to be rubbed back and one maintenance coat applied. 12) What should be used to degrease galvanised steel? The standard recommendation would be to use soapy water which would remove any salts which might encourage rusting where the substrate has lost its zinc coating. 13) Can Hammerite Direct To Galv be applied to roofs / flat roofs? The product is more susceptible to wet adhesion failure which rules out flat roofs as they are totally exposed and it would be likely to find water sitting on the coating for long periods.
  • 6. TECHNICAL DATA HAMMERITE DIRECT TO RUST METAL PAINT Smooth • Hammered • Satin • Aerosol Gloss at Pr rco im de er Un THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 7. DESCRIPTION PAINTED METAL SURFACES: Hammerite paint is a single pack, air drying corrosion Abrade the painted surface to remove contaminants/ resistant and decorative coating. It is based on gloss. synthetic resins and is suitably pigmented for optimum Wash down thoroughly with diluted detergent. weathering properties. Hammerite is fast drying and capable of multi-coat application any time after 4 hours. Rinse with clean water. The specially selected resins impart a gloss or satin Allow to dry. finish which resists dirt pick up. Hammerite has excellent wetting properties making it tolerant to poorly prepared Test for compatability with existing paint by painting ferrous surfaces. It is available in Smooth, Hammered a small test area first. Any compatibility problems will and Satin finish and in an aerosol. be evident within the first hour after application. SHINY, SMOOTH METAL SURFACES USE Extra abrasion is required to ensure maximum As a corrosion resistant and decorative coating for adhesion. ferrous and non-ferrous metals, wood and certain plastics. Degrease with Hammerite Brush Cleaner. APPEARANCE UNPAINTED GALVANISED/ALUMINIUM/ NON FERROUS METAL SURFACES Hammerite Smooth - a smooth gloss. Note: Gold, Silver and Copper are metallic sheen To ensure maximum adhesion on aluminium and non finishes. ferrous metal surfaces use Hammerite Special Metals Primer. Hammerite Hammered - a smooth gloss incorporating a hammered pattern. Notes: In many areas, industrial and coastal districts Note: Pattern will vary depending on temperature, in particular, soluble salts may contaminate the colour, substrate and method of application. substrate. It is essential to scrub and rinse repeatedly Hammerite Satin - a matt finish with clean water to remove this contamination. Extremely rough or pitted ferrous metals will benefit COLOUR MIXING from the application of Hammerite No. 1 Rust Beater Hammerite Hammered, Smooth and Satin Finishes are before using Hammerite paint. produced to Hammerite Products Limited’s own in-house OTHER SURFACES: colour standards and are not matched to BS 4800 or RAL standards. PLASTICS: All Hammerite Hammered colours can be intermixed Hammerite paint may be used on certain types of though the pattern may be affected. plastic such as drainpipes and guttering. All Hammerite Smooth colours can be intermixed except WOOD: for Smooth Gold, Silver and Copper. Bare wood SURFACE PREPARATION - Apply a water based acrylic wood primer before applying Hammerite paint. FOR RUSTED METAL SURFACES: Painted wood: Minimum standard for adequate performance - St 2 (Swedish Standard SIS 05 59 00). This should be - Abrade the painted surface to remove achieved by abrasion with coarse emery paper or contaminants/gloss. needle gun/grinder, where applicable. - Wash down thoroughly with diluted detergent. - Rinse with clean water. All surfaces must be dry and free from loose rust, dirt, dust, grease and salt. - Allow to dry. BARE METAL SURFACES: Degrease with Hammerite Brush Cleaner.
  • 8. RECOMMENDED FILM THICKNESS Set professional spray gun to between 25/35 psi (approximately 2 Bar). Minimum 200 microns wet. Use a full fan spray at maximum spray volume. Minimum 100 microns dry. Apply 3-4 thin coats in quick succession allowing The number of coats required to achieve this will vary approximately 1 hour between coats. The final coat depending on substrate and method of application. should be sprayed heavily enough to flow to a glossy finish avoiding runs and sags. COVERING CAPACITY Airless Spray 5 sq metres/litre for two coats at recommended dry If necessary Thin Hammerite metal finish with film thickness (brushing). 15% Hammerite Brush Cleaner & Thinners APPLICATION or white spirit. Fluid pressure: 2500 - 3000 psi (approximately Apply at least 2 coats leaving at least 4 hours between 170 Bar). coats. Nozzle size: 375-500 microns/0.015 - 0.020”. Minimum application temperature : 3°C above dew point Apply 2-3 coats, leaving each coat for approximately 1 hour or until it is touch dry before applying further Ideal application temperature : 8-30°C (46-86°F) coats. Maximum relative humidity : 85% For both conventional spray and airless spray: APPLICATION METHODS Shake spray gun before and during use to ensure an even colour. Brush - Suitable for small flat areas and intricate wrought ironwork. For best results use Hammerite Brush Cleaner & Thinners or white spirit. Stir before use. Aerosol - Suitable for touch up/small applications. At least two coat coverage is essential to bare or rusty metal to achieve film thickness for corrosion Store aerosol at room temperature for two hours prior resistance, however Hammerite paint will take longer to use. to dry and sag if over applied. Shake can vigorously for a full three minutes AFTER Ensure edges and corners are adequately covered, the agitator ball is heard. Use a vertical rather than a these are at greatest risk of premature rusting. horizontal motion. Roller - Suitable for larger flat areas. Apply light even coats from a distance of Hammerite is designed to be ready for use. approximately 15 cms (6”). To avoid runs and sags keep the aerosol moving. Do not concentrate the Hammerite paint can be thinned to ease roller spray in any one spot. application. Use Hammerite Brush Cleaner or white spirit at a ratio of 9 parts paint to 1 part Brush Cleaner. Several thin coats are recommended, particularly on intricate and vertical surfaces. Allow approximately The edges should be brushed in first and the 15 minutes between coats. remaining area’s quickly filled in with the roller. To avoid blockages, invert can and spray for two For best results apply liberally using short, quick seconds between coats and after final use. strokes. Spray - Suitable for large flat and uneven surfaces Note: The following contain silicones: Hammerite Hammered finish - all colours Hammerite Smooth finish – gold, silver and copper. Conventional Spray Thin Hammerite metal finish with 15% Hammerite Brush Cleaner & Thinners or white spirit. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 9. HOW TO ENSURE MAXIMUM PERFORMANCE WHEN SPRAY FINISHING Problem Cause Remedy 1. Colours or shade varies. Pigment settling in gun. Shake gun more frequently and apply further coats. 2. Rough ‘sandpapery’ appearance Paint drying too quickly. Check for blocked jets or air vents in lacking gloss. Gun pressure may be too high. container. Reduce gun pressure. 3. Excessive consumption. Pressure too high causing ‘bounce’. Reduce gun pressure. Conditions too windy. Wait for still conditions. 4. Paint runs. Excessive thickness in one coat. If not too severe wait 60 minutes and re-spray. If very bad, allow to full dry, level off with emery and re-spray Hammered Finish Only 5. Pattern very small or no pattern Final coat too thin. Apply a thicker coat. at all. 6. Surface is uneven with pin-holes Temperature too low causing pattern Minimum recommended application or craters. drift. temperature 10°C (50°F). DRYING TIME (120°F). Do not pierce or burn even after use. Touch/Surface Dry: 2 hours approximately CORROSION RESISTANCE Intercoat Period: After 4 hours Passes 1600hours (8 year equivalent) ASTM B117 1973 Note: Times may change depending on weather at 100 microns dry film thickness ASTM D609, Type2 conditions A366 steel panels. CLEANING EQUIPMENT IMPACT RESISTANCE Use Hammerite Brush Cleaner. Passes 15cm (face) BS3900, E7 falling ball 15”/lb 7 days at 100 microns dry film thickness. SHELF LIFE AND STORAGE CONDITIONS Tins ADHESION Minimum two years at 20°C (70°F) stored in original Passes BS 3900 E6, 7 days at 100 microns dry film unopened containers. Hammerite paint should be stored thickness. in a dry, well ventilated area. Protect from extremes of temperature, ie frost and strong sunlight. CHEMICAL RESISTANCE Aerosol Resists splashing by dilute acids/alkalis (10% max), Minimum two years at 20°C (70°F) in original unopened petrol, diesel and all common building materials when containers. Pressurised container - protect from sunlight fully cured. and do not expose to temperatures exceeding 50°C
  • 10. TEMPERATURE RESISTANCE Limits: Minus 20°C (-4°F) to 150°C (300°F) maximum intermittent when fully cured. Continuous 80°C (180°F) when fully cured. Note: Colours may fade after prolonged exposure at temperatures exceeding 50°C (120°F). VISCOSITY 5.5 poise - 8.0 poise at 25°C (ICI cone and plate viscometer) depending on colour/finish. SPECIFIC GRAVITY 0.96 - 1.10 at 20°C depending on colour/finish. UV RESISTANCE Hammerite will resist the effects of UV damage. Resistance time could be reduced in hot climates or south facing aspects where the extremes of UV and temperature are present. Note: All decorative alkyd based paints will fade or chalk when exposed to heat and UV radiation. SERVICE LIMITATIONS Not suitable for use on equipment which may operate at 150°C (300°F) or above. Not suitable for use in contact with drinking water or foodstuffs. Not suitable for permanent immersion. VOC LEVEL Hammerite comforms to EU Directive 2004/42/CE for VOC. The products shown above are classified as Category A/i 600g/l (2007) / 500g/l (2010). The product contains maximum of 499 g/l. DISCLAIMER To the best of our knowledge and belief the infomation given in this technical data is accurate at the date of issue. It is the user’s responsibility to satisfy themselves as to the application of the product and/ or recommendations given for users particular use of Hammerite Metal Paint. This technical data should be read in conjunction with the Hammerite Metal Paint materials safety data sheet SDSHM101 (12/2005). THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 11. TECHNICAL DATA HAMMERITE DIRECT TO GALV PAINT Gloss at Pr rco im de er Un
  • 12. DESCRIPTION PAINTED METAL SURFACES: Hammerite Direct to Galv Paint is a single pack, air Abrade the painted surface to remove contaminants/ drying decorative coating for application to Galvanised gloss. Steel and other non-ferrous metals without the need Wash down thoroughly with Hammerite Brush Cleaner, for a primer. The product uses an alkyd designed for metal degreaser or diluted detergent (preferred general purpose high quality air-drying and force option) both for removal of surface contaminants and drying industrial finishes and exhibits properties of fast soluble salts. surface dry, excellent through dry in thick films, early recoatability and minimum yellowing. Hammerite Direct Rinse with clean water. to Galv can be applied by brush, roller and spray. The Allow to dry. specially selected resin imparts a gloss finish which resists dirt pick up. Hammerite Direct to Galv Paint is Test for compatibility with existing paint by painting a designed to give excellent one coat coverage. small test area first. Any compatibility problems will be evident within the first hour after application. USE SHINY, SMOOTH METAL SURFACES As a decorative coating for galvanised and non-ferrous metals, wood and certain plastics. Abrasion is required to ensure maximum adhesion. Degrease with Hammerite Brush Cleaner, metal APPEARANCE degreaser or diluted detergent (preferred option) both for removal of surface contaminants and soluble salts. Hammerite Direct to Galv Paint - a smooth gloss. Note: Bronze, Silver and Copper are metallic sheen Rinse with clean water. finishes.. Allow to dry. COLOUR RANGE Apply a phosphoric acid etch primer (mordant solution) to convert the galvanised steel zinc surface See colour chart. before application of DTG. Note: Hammerite Direct to Galv Paint Finishes are produced to Hammerite Products Limited’s own FOR RUSTED METAL SURFACES: in-house colour standards and are not matched to BS 4800 or RAL standards. For rusty steel or iron: Hammerite Direct To Galv is not suitable for ferrous metal. Use Hammerite Direct To Rust COLOUR MIXING Paint. Do not mix Hammerite Direct to Galv Paint with any For light white rust on galvanised steel (light powdery other Hammerite finish’s. deposit): Wipe clean with a paint brush, abrade, and degrease as above. SURFACE PREPARATION For moderate white rust on galvanised steel (darkening and apparent etching of the surface): Wire brush BARE METAL SURFACES: affected area to remove white corrosion, then use a cloth which has been wet with a standard aluminium New galvanised steel should be weathered until dull paint to wipe a thin film on to the affected area. Then before application of DTG (this is true of both spangled abrade, and degrease as above. and non-spangled galvanised steel). For severe corrosion on galvanised steel (severe oxide Abrade giving a key to subsequent coatings. This is deposits which look brown or black and/or red rust, essential to remove any pre-treatment factory finish (this means the zinc coating has been lost). Apply a (chromate pretreatment). Abrasion should be with standard zinc rich paint follow the on pack instructions. coarse sandpaper rather than fine to ensure removal Then following the zinc rich paint over coating of this coating. instructions apply Hammerite Direct To Galv on top. It is Degrease with Hammerite Brush Cleaner, metal advisable to test patch a small area before applying to degreaser or diluted detergent (preffered option) both the entire surface. for removal of surface contaminants and soluble salts. Rinse with clean water. Allow to dry. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 13. UNPAINTED ALUMINIUM/NON FERROUS APPLICATION METHODS METAL SURFACES Brush - Suitable for small areas. To ensure maximum adhesion on aluminium and non Stir before use. ferrous metal surfaces use Hammerite Special Metals Primer. One coat will normally be sufficient but additional coats may be required when applying over contrasting Notes: In many areas, industrial and coastal districts in colours. particular, soluble salts may contaminate the substrate. It is essential to scrub and rinse repeatedly with dilute Ensure edges and corners are adequately covered. detergent and rinse with clean water to remove this Roller - Suitable for larger flat areas. contamination. Hammerite Direct to Galv Paint is designed to be OTHER SURFACES: ready for use. PLASTICS Hammerite Direct to Galv Paint can be thinned to ease roller application. Use Hammerite Brush Cleaner or Hammerite paint may be used on certain types of white spirit at a ratio of 9 parts paint to 1 part Brush plastic such as drainpipes and guttering. Cleaner or white spirit. WOOD The edges should be brushed in first and the Bare wood remaining area’s quickly filled in with the roller. - apply a water based acrylic wood primer before For best results apply liberally using short, quick applying Hammerite paint. strokes. Painted wood: Spray - Suitable for large flat and uneven surfaces - Abrade the painted surface to remove contaminants/gloss. Note: The following contain silicones: - Wash down thoroughly with diluted detergent. Hammerite Direct to Galv Paint – bronze, silver and copper. - Rinse with clean water. Conventional Spray - Allow to dry. Thin Hammerite Direct to Galv Paint with up to 25% RECOMMENDED FILM THICKNESS white spirit Minimum 100 microns wet. Set professional spray gun to between 25/35 psi (approximately 2 Bar). Minimum 50 microns dry. Use a full fan spray at maximum spray volume. One coat will normally be sufficient although additional coats may be required when applying over contrasting One coat will normally give full coverage but where colours. additional coats are required over contrasting colours leave approximately 1 hour between coats. The final COVERING CAPACITY coat should be sprayed heavily enough to flow to a glossy finish avoiding runs and sags. Up to 14sq metres/litre for one coat at recommended Airless Spray dry film thickness (brushing). Thinning not required but if necessary thin Hammerite APPLICATION Direct to Galv Paint with up to 25% white spirit. Only one coat is usually required. However when Fluid pressure: 2500 - 3000 psi (approximately applying over a contrasting colour a 2nd coat may be 170 Bar). needed. Leave at least 4 hours between coats. Nozzle size: 375-500 microns/0.015 - 0.020”. Minimum application temperature: 3°C above One coat will normally give full coverage but where dew point additional coats are required over contrasting colours Ideal application temperature: 8-30°C (46-86°F) leave approximately 1 hour between coats or until Maximum relative humidity: 85% it is touch dry before applying further coats.
  • 14. For both conventional spray and airless spray: Shake spray gun before and during use to ensure an even colour. For best results use only white spirit. HOW TO ENSURE MAXIMUM PERFORMANCE WHEN SPRAY FINISHING Problem Cause Remedy 1. Colours or shade varies. Pigment settling in gun. Shake gun more frequently and apply further coats. 2. Rough ‘sandpapery’ appearance Paint drying too quickly. Check for blocked jets or air vents in lacking gloss. Gun pressure may be too high. container. Reduce gun pressure. 3. Excessive consumption. Pressure too high causing ‘bounce’. Reduce gun pressure. Conditions too windy. Wait for still conditions. 4. Paint runs. Excessive thickness in one coat. If not too severe wait 60 minutes and re-spray. If very bad, allow to fully dry, level off with emery and re-spray. DRYING TIME Touch/Surface Dry 1-2 hours Intercoat Period After 4 hours Note: Times may change depending on weather conditions CLEANING EQUIPMENT Use Hammerite Brush Cleaner or white spirit. SHELF LIFE AND STORAGE CONDITIONS Tins Minimum two years at 20°C (70°F) stored in original unopened containers. Hammerite Direct to Galv Paint should be stored in a dry, well ventilated area. Protect from extremes of temperature, ie frost and strong sunlight. IMPACT RESISTANCE Passes 15cm (face) BS3900, E7 falling ball 15”/lb 7 days at 50 microns dry film thickness. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C
  • 15. ADHESION Galvanised Steel provides a difficult surface on which to achieve good adhesion. Good surface preparation will prevent most types of potential adhesion failure. The table below may be used as a guide to the causes of adhesion failure and the solution to avoid this occurrence before use of Hammerite Direct to Galv Paint: Cause of adhesion failure Remedy Surface contamination – oil and grease Degrease with dilute detergent Formation of soluble salts (particularly applicable Degrease with dilute detergent to weathered galv) Chromate factory pre-treatment Abrade to remove New galv with large and bright spangle predominatly Weather until dull before application of DTG or use zinc phosphoric acid etch primer followed by Special Metals Primer Corrosion of the zinc Refer to Surface Preparation section. Etch primers or ‘mordant’ solutions Only use phosphoric acid etch primer – other acid based primers do not cause adhesion failure but will affect the thickness of the galvanised coating Reaction between DTG and zinc (formation of fatty This is inevitable but sound surface preparation acid soaps) (degrease and abrade) and the selection of alkyd for this product maximises the adhesive strength of the product. Prolonged performance will result from the use of Special Metals Primer. 105% Any flaws in the painted substrate (scratches etc) can allow water to get under the dry paint film to encourage lifting of the paint particularly where water is allowed to stand or pool on the surface Sound surface preparation will prevent the product coming off in sheets where this does occur. High risk surfaces should not be recommended for application with this product (flat roofs must be avoided).
  • 16. CHEMICAL RESISTANCE Resists splashing by dilute acids/alkalis (10% max), petrol, diesel and all common building materials when fully cured. TEMPERATURE RESISTANCE Limits: Minus 20°C (-4°F) to 150°C (300°F) maximum intermittent when fully cured. Continuous 80°C (180°F) when fully cured. Note: Colours may fade after prolonged exposure at temperatures exceeding 50°C (120°F). VISCOSITY 5.0 poise - 8.0 poise at 25°C (ICI cone and plate viscometer) depending on colour/finish. SPECIFIC GRAVITY 0.90 - 1.16 at 20°C depending on colour/finish. UV RESISTANCE Hammerite Direct to Galv Paint will resist the effects of UV damage. The UV resistance exposure time however could be reduced in hot climates or south facing aspects where the extremes of UV and temperature are present. Note: All decorative alkyd based paints will fade or chalk when exposed to heat and UV radiation. SERVICE LIMITATIONS Not suitable for use on equipment which may operate at 150°C (300°F) or above. Not suitable for use in contact with drinking water or foodstuffs. Not suitable for permanent immersion. VOC LEVEL Hammerite conforms to EU Directive 2004/42/CE for VOC. The products shown above are classified as Category A/i 600g/l (2007)/500g/l(2010). The product contains maximum of 499 g/l. DISCLAIMER To the best of our knowledge and belief the information given in this technical data sheet is accurate at the date of issue. It is the user’s responsibility to satisfy themselves as to the application of the product and/or recommendations given for users particular use of Hammerite Direct to Galv Paint. THE METAL PAINT SPECIALISTS LO N G LA A RE STING METAL C