SS 500 2015 Spec_Elastomeric Wall Coating (2) (2).pdf

1. I
6ISINGAPORE
STANDARDS
COUNCIL
Specification for elastomeric wall
coating
Toppan S$24.02
2 hIftIIII~I~O~IiIiIiLiiiU
55500:2015
(md 7% 081)
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SS 500 : 2015
(ICS 87.040)
COMPLIM NIARY
SINGAPORE STANDARD
www.spring.gov.sg

2. SS 500 2015
(ICS 87.040)
SINGAPORE STANDARD
Specification for elastomeric wall coating
All rights reserved. Unless otherwise specified, no part of this Singapore Standard may be
reproduced or utilised in any form or by any means, electronic or mechanical, including
photocopying and microfilming, without permission in writing from SPRING Singapore at the
address below:
SPRING Singapore
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#01-02 South Tower, Solaris
Singapore 138628
Email: standards~spring.gov.sg
ISBN 978-981-4726-25-2

3. SS 500 : 2015 SS 500 :2015
This Singapore Standard was approved by the Chemical Standards Committee on behalf of the The Technical Committee on Surface Coatings, appointed by the Chemical Standards Committee and
Singapore Standards Council on 15 December 2015. responsible for the preparation of this standard, consists of representatives from the following
organisations:
First published, 2003
First revision, 2015 Name Capacity
The Chemical Standards Committee, appointed by the Standards Council, consists of the following Chairman : Mr Lim Eng Kiat Individual Capacity
members:
Secretary : Ms Elane Ng Standards Development Qrganisation~Singapore
Chemical Industry Council
Name Capacity
Members Ms Grace Cheok-Chan Green Mark Department, Building and Construction
Chairman Dr Keith Carpenter Member, Standards Council Authority
Deputy Dr Dien Pandiman I Pidilite Innovation Centre me Ltd
Chairman Dr Tay Kin Bee Individual Capacity Ms Guo Yilin
Secretary I : Ms Elane Ng Standards Development Organisation~Singapore Mr Goh Su-Liang I Singapore Green Building Council
Chemical Industry Council Dr Shah Kwok Wei
Secretary 2 : Ms Jillian Chin Standards Development Organisation~Singapore Ms Jayanthi Peariahsamy Building and Construction Authority
Chemical Industry Council Mr Kavickumar sb Singapore Environment Council
Members : Mr Goh Tiak Boon Individual Capacity Muruganathan
Mr Khong Beng Wee Individual Capacity Dr K A Khider Mohamed Haruna Paint Pte Ltd
Mr Terence Koh Singapore Chemical Industry Council Limited Mr Richard Lai Singapore Institute ofArchitects
Prof Lee Hian Kee National University of Singapore Mr Lim Kian Chye Housing & Development Board
Ms Lee Hiok Hoong SPRING Singapore Mr Lu Jin Ping AdMaterials Technologies me Ltd
Dr Lee Tong Kooi Chemical Metrology Division, Health Sciences Ms Pamela Phua Singapore Paint Industry Association
Authority Mr Salim Suwignjo Setsco Services me Ltd
Dr Leong Kwai Yin Individual Capacity
Mrs Wong-Lin Tai Hoe TUV SUD PSB Pta Ltd
Prof Leung Pak Hing Nanyang Technological University
Dr Yin Xi Jiang Singapore Surface Engineering Association
Mr Lim Eng Kiat Individual Capacity
Mr Lim Kian Chye / Housing & Development Board
MrNg Eng Eu
Dr Lim Mong Hoo Individual Capacity
Dr Jerry Liu Jian Lin Singapore Water Association
Dr Loh Wah Sing Individual Capacity
Dr Ng Sek Yeo Singapore Polytechnic
Dr Parry Oei Maritime and Port Authority of Singapore
Ms Pamela Phua Singapore Paint Industry Association
Mr Seah Khen Hee Individual Capacity
Mr Tan Nguan Sen PUB, the National Water Agency
Ms Suzanna Yap National Environment Agency
Co-opted
Members : Assoc Prof Thomas Liew Individual Capacity
Mr Nee Pai How Individual Capacity
Mr Pitt Kuan Wah Individual Capacity
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4. SS 500 :2015 SS 500 :2015
Contents
Page
Foreword ______________________________________________________________________ 6
1 Scope __________________________________________________________________ 7
2 Normative references _____________________________________________________ 7
3 Definition of elastomeric wall coatings ________________________________________ 8
4 Approved sample ________________________________________________________ 8
5 Laboratory test conditions _____________________________________________________ 8
6 Requirements ___________________________________________________________ 8
7 Testing _________________________________________________________________ 12
8 Keeping qualities _________________________________________________________ 13
9 Packaging _______________________________________________________ 13
10 Marking ____________________________________________________________ 13
Annexes
A Water absorption test (normative) _________________________________________ 16
B Efflorescence test (water permeability) (normative) ______________________________ 17
C Testing arrangements (informative) __________________________________________ 18
Tables
1 Quantitative requirements of the coating _________________________________________ 9
2 Test methods ________________________________________________________ 14
3 Key performance requirements of the coating __________________________________ 15
Figure
A.1 A set-up of water absorption test ____________________________________________ 16
(blank page)
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5. SS 500 :2015
SS 500 : 2015
Foreword
This Singapore Standard was prepared by the Technical Committee on Surface Coatings under the
direction of the Chemical Standards Committee.
This standard was based on a research project undertaken to develop a specification for an
elastomeric wall coating suitable for use under the climatic conditions of Singapore which is situated in
the humid tropics.
55 500 : 2002 was amended in September 2014 to include the new performance criteria for wet scrub
resistance as described in SS 5 : Part F6 ‘Determination of wet-scrub resistance’.
This standard is a revision of SS 500 : 2002. The main changes in the revised edition are as follows:
a) Inclusion of quantitative requirements on heavy metals and VOCs;
b) Inclusion of qualitative requirements on solvents and specific hazardous substances.
Annex A (water absorption test) is reproduced from Japanese Industrial Standard JIS K 5400 : 1990—
‘Testing methods for paints’ with permission from the Japanese Standards Association.
Acknowledgement is made for the use of information from this standard.
This standard is expected to be used by paint manufacturers, suppliers, test laboratories, contractors,
applicators, architectural associations, consultants, facilities/property managers, land surveyors and
related government agencies.
Attention is drawn to the possibility that some of the elements of this Singapore Standard may be the
subject of patent rights. SPRING Singapore shall not be held responsible for identifying any or all of
such patent rights. r
Specification for elastomeric wall coatings
I Scope
This standard applies to a ready-to-use, air-drying elastomeric wall emulsion paint with waterproofing
and fine crack repairing properties for exterior use on masonry surfaces. The recoating of previously
painted surfaces which are in a sound condition and suitable for receiving such a coating is also
covered by the standard.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ASTM D412 Standard test methods for vulcanized rubber and thermoplastic elastomers
— Tension
ASTM 0610 Standard practice for evaluating degree of rusting on painted steel surfaces
ASTM D1014 Standard practice for conducting exterior exposure tests of paints and
coatings on metal substrates
ASTM Dl 653 Standard test methods for water vapor transmission of organic coating
films
ASTM D3359 Standard test methods for measuring adhesion by tape test
ASTM D3719-00 Standard test method for quantifying dirt collection on coated exterior
panels
BS 4800 Schedule of paints colours for building purposes
IEC 62321 : 2008 Electrotechnical products - Determination of levels of six regulated
substances (lead, mercury, cadmium, hexavalent chromium,
polybrominated biphenyls, polybrominated diphenyl ethers)
ISO 11890 Part 1 Paints and varnishes — Determination of volatile organic compound (VOC)
content — Part 1 : Difference method
ISO 11890 Part 2 Paints and varnishes — Determination of volatile organic compound (VOC)
content — Part 2 : Gas-chromatographic method
Methods of test for paints, varnishes and related materials
Part B2: Determination of non-volatile mailer content
Part B4: Condition in container
Part B7: Density
Part B9: Brushing properties
Part B1 2 Consistency of paints using the Stormer viscometer
Part B1 3 : Fineness of grind
Part C4: Determination of low concentrations of mercury in paint by atomic
absorption spectroscopy
Part C6 : Determination of low concentrations of lead, cadmium and cobalt
in paint by atomic absorption spectroscopy
Part D3: Hard-drying time
NOTE
1. Singapore Standards are subject to periodic review to keep abreast of technological changes and new
technical developments. The changes in Singapore Standards are documented through the issue of
either amendments or revisions.
2 Compliance with a Singapore Standard does not exempt users from legal obligationa
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6. SS 500 :2015 SS 500 :2015
3 Definition
Part El Measurement of specular gloss of non-metallic paint films at 20°,
600 and 85°
Part E2 Determination of contrast ratio (opacity) of light-coloured paints at
a fixed spreading rate
Part E3 : Visual comparison of the colour of paints
Part F6 : Determination of wet-scrub resistance
Part G2 : Alkali resistance (spotting method)
Part G9 Artificial weathering and exposure to artificial radiation —
Exposure to filtered xenon-arc radiation
6.2.2 Vehicle
The vehicle shall consist essentially of a suitable synthetic resin polymer dispersion in water or a
mixture of such dispersion together with such preservatives and other ingredients as may be
necessary.
6.2.3 Algicide
A suitable level of an effective non-mercurial algicide shall be used. The level used should not render
the finish or its film hazardous to health. The algicide used shall be one that is resistant to solar
irradiation, consistent with the climatic conditions in Singapore.
6.3 Coating quantitative requirements
The coating shall meet the quantitative requirements specified in Table 1.
Table I — Quantitative requirements of the coating
For the purpose of this Singapore Standard, the following definition applies.
3.1 Elastomeric wall coating
Elastomeric wall coating is a high-build functional coating with waterproofing properties as well as
elongation and elasticity to accommodate substrate and crack movement(s). It allows permeation of
water vapour from buildings. It has the total functional dry film thickness range from 100 jim to 250 aim.
4 Approved sample
The approved sample shall be a sample as agreed between the purchaser and the vendor and shall
comply in all respects with the requirements (except density) of this standard. The sample shall
consist of at least one litre of the paint proposed for sale and shall satisfy all the requirements in
Clause 6 up to a period of 12 months from the date of approval.
5 Laboratory test conditions
Unless otherwise stated, all tests shall be conducted at a temperature of 27 ± 2 °C and a relative
humidity of 80 ± 5%.
6 Requirements
6.1 Materials
Materials shall be as specified herein. Materials not definitely specified shall be of a commercial
quality entirely suitable for this purpose.
6.2 Composition
6.2.1 Pigments
Pigments shall be resistant to free alkali, normally encountered in common use. Any suitable pigment
and extender may be used provided the resulting product conforms to this standard.
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Characteristics Requirements
Minimum Maximum
Non-volatile matter, % (m/m) of paint 55 -
Consistency (25°C), Krebs units 90 120
Density at 25 °C (different from approved sample in percentage) - ± 2
Fineness of grind, microns - 40
Sheen (specular reflection at 85°), 75 ± 10 pm wet film 10 50
Hard-drying time, hours - 1
Opacity (contrast ratio), % 75 -
Heavy metals requirements, ppm (mg/kg) of dried paint film
Mercury 100
Lead 100
Cadmium 100
Chromium (VI) 100
NOTE — Paints containing mineral based colorants are allowed to have
trace amounts of heavy metals (no higher than 100 ppm) due to their
inherent nature.
VOC limits, g/L 90
*Unless otherwise agreed between the purchaser and the vendor, the requirements for opacity shall apply.
6.4 Coating qualitative requirements
6.4.1 Colour
The colour of the coating specified shall match that of the standard colour in BS 4800 or any reference
colour as agreed between purchaser and vendor, when tested as prescribed in SS 5 : Part E3.
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55 345 Algae resistance emulsion paint for decorative purposes
NOTE—
I The review of the SS
2 IEC 62321 2008 is
used for coatings.
5 series was completed in 2013.
used for the evaluation of Cr(Vl) content in electrotechnical products and can also be
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7. SS 500 :2015 SS 500 2015
6.4.2 Condition in container
The coating shall not show excessive settling in a freshly opened can containing the specified quantity,
and shall be easily redispersed with a spatula to a smooth homogeneous state. The coating shall
show no coagulation, caking or colour separation and shall be free from lumps, skin pieces and
foreign matter.
6.4.3 Applicability and appearance
6.4.3.1 Brushing
The coating shall brush easily and possess good levelling properties when applied at a spreading rate
of approximately 6 m2 / litre to 7 m2 I litre to a light cream coloured gypsum plasterboard. The dried
coating film shall show moderate but not excessive brush marks. The coating shall have satisfactory
recoating properties and drying time. There shall be no lifting, wrinkling, lack of uniformity or other film
defects.
6.4.3.2 Roller coating
The coating shall roller coat easily and possess good levelling properties with minimum foam. If any
foam is evident, no cratering in the dry film shall be present. There shall be minimal difference(s) in
colour between the brushed and roller-coated parts of the panel.
6.4.4 Wet scrub resistance
A dry film of the paint prepared and tested as prescribed in 7.1.4 shall sustain less than or equal to
10 pm mean loss in film thickness, averaged over a defined area, when exposed to 200 wet-scrub
cycles.
6.4.5 Accelerated weathering
When the coating film is prepared and tested to 1000 h exposure, there shall be no signs of checking,
blistering, cracking, chalking, colour fading or other changes in appearance.
6.4.6 Algal resistance
When the coating film is prepared and tested (using Annex A of SS 345), there shall be no sign of
algal growth on the coating film.
6.4.7 Alkali resistance
The coating shall not show any blistering, wrinkling or lifting when examined immediately. After
subsequent drying for 30 mm, there shall be no change from the original colour.
6.4.8 Adhesion test (X-cut)
6.4.8.1 The coating on the dust-free surface of porous fibre-reinforced cement panels shall achieve a
rating of at least 4A when tested in accordance with ASTM D3359.
6.4.8.2 For porous/compact fibre-reinforced cement panels, the material and preparation shall be in
accordance with SS 5: Part A3.
The thickness of fibre-reinforced cement sheets varies with different methods of manufacture and is
usually within the range of 3 mm to 5 mm. Test methods using such panels shall specify their
thickness, water permeability, density and mechanical properties, whichever applicable. The smooth
or untextured surface shall be used for testing the paint or related products.
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6.4.9 Solvent
Coating shall not be formulated or manufactured with halogenated organic solvents and aromatic
organic solvents.
6.4.10 Specific hazardous substances
Coating shall not be formulated or manufactured with formaldehyde-containing materials and shall not
contain N-methyl pyrrolinone (NMP), alkyl phenol ethoxylates (APEOs) and epichlorohydrin.
6.5 Mechanical property requirements
6.5.1 Tensile strength
The tensile strength of the coating film shall be at least 1.5 N/mm2.
6.5.2 Elongation at break
The coating film shall show an elongation at break of minimum 100%.
6.6 Waterproofing property requirements
6.6.1 Water absorption
Apply two coats of coating by brush givin~ each coat a wet film thickness of approximately 75 jim over
a porous fibre-reinforced cement panel and cure for 7 days. The coating shall display a water
absorption rate of not more than 1 7Oml/m2 per day of water when a pipette-funnel apparatus is
mounted with its base onto the coated panel, sealed with silicone adhesive and monitored for water
absorption for 14 days (see Annex A).
6.6.2 Water vapour transmission
The coating films with a dry film thickness of 150 ± 15 lim shall be prepared by casting uniformly, a
wet film on a sheet such as release paper and cured for 14 days at 27 ± 2 °C and 80 ± 5 % relative
humidity. The applied film shall be evaluated in accordance with ASTM D1653 using the wet cup
method and a test condition of 23°C and 50% relative humidity wherein the water vapour transmission
rate shall be at least 80 g water/m2124 h.
6.6.3 Efflorescence test (water permeability test)
Apply two coats of coating by brush giving each coat a wet film thickness of approximately 75 jim over
a porous saturated Ca(OH)2 solution treated fibre-reinforced cement panel (see 6.4.8.2) and cure for 7
days. The coating shall display no yellowing, blistering, sweating and disintegration of paint when
placed on a wet cotton wool pad for 14 days (see Annex B).
6.7 Dirt retention property requirement — Natural weathering
Apply two coats of coating by brush giving each coat a wet film thickness of approximately 75 jim over
a porous fibre-reinforced cement panel (see 6.4.8.2). After drying for 14 days, when subject to
exposure tests according to ASTM D1014 (facing south at 45°) for a period of 3 months, the coating
shall show a dirt collection index, Dc (ASTM D3719), of a minimum 92% (before washing) and 95%
(after washing). The panel shall also not show excessive water spoiling marks, based on ASTM D61 0.
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8. SS 500 :2015 SS 500 : 2015
7 Testing 7.1.9 Adhesion test (X-cut)
7.1 Test methods Apply two coats of coating by brush over a porous fibre-reinforced cement panel (see 6.4.8.2), giving
each coat a wet film thickness of approximately 75 ~im and cure for 7 days at 27 ± 2°C and 80 ± 5%
relative humidity. These panels shall be soaked in water and air-dried before application.
7.1.1 General
7.1.10 Tensile strength and elongation at break
The tests shall be conducted in accordance with the applicable test methods indicated in Table 2 and
as specified hereinafter.
The coating films with a dry film thickness of 1 Soiim ± 15 lIm shall be prepared by casting uniformly a
7.1.2 Colour wet film on a sheet such as release paper and cured for 14 days at 27 ± 2°C and 80 ± 5% relative
humidity. The applied films, tested in accordance with ASTM D412 using die C with a pulling rate of
50 mm/mm, shall comply with the requirements in Table 3.
Two coats of the coating are to be brushed on an unglazed, white cardboard paper and allowed to dry
under normal drying conditions for 24 h. The dry film shall be observed for compliance with 6.4.1 by
the method specified in Table 2. 7.2 Testing arrangements
7.1.3 Condition in container When, by arrangement between the purchaser and the vendor, the vendor is to establish compliance of
the paint with this standard, the extent, nature and frequency of the tests to be carried out shall be the
The coating, when tested in accordance with the method specified in Table 2, shall comply with 6.4.2. subject of agreement between the purchaser and the vendor.
7.1.4 Wet scrub resistance NOTE — Annex C gives some guidance as to the type of testing programme which may be appropriate.
The paint with wet film thickness of (200 ± 25) pm, when tested in accordance with the method 8 Keeping qualities
specified in Table 2, shall comply with 6.4.4.
7.1.5 Accelerated weathering The coating shall be such that when stored in its original sealed container at a temperature of 25°C to
29 °C, it shall retain the properties described in this standard for a period of up to six months, from the
Apply two coats of coating by brush on the smooth side of a compact fibre-reinforced cement panel date of delivery.
(see 6.4.8.2), previously moistened, that has no silicone or other waterproofing treatment, giving each
coat a wet film thickness of approximately 75 lAm. Allow the material to dry at normal drying conditions
for 168 h. Subject the coated panel for 1000 h to accelerated weathering in accordance with the 9 Packaging
method specified in Table 2. Examine the exposed coated panel for chalking. Wash the exposed
panel lightly with wet degreased cotton wool to remove any scum or dirt. Wipe off water with The coating shall be supplied in a clean and dry container with the quantity as specified. The interior
degreased cotton wool and let it dry for an hour. Check results for compliance with 6.4.5. of any metal container shall be suitably lacquered.
7.1.6 Alkali resistance
10 Marking
The coating film, prepared and tested using 0.1 M NaOH solution in accordance with SS 5 : Part G2
for the duration of 1 h, shall comply with 6.4.7. The following information shall be legibly and durably marked on each container:
7.1.7 Sheen (at 85° specular reflection) (a) Name of the paint;
(b) Type;
Apply a coat of coating by means of a spreading device on a glass panel, prepared in accordance with
SS 5 : Part A3, giving a wet film thickness of approximately 75 um in accordance with the method (c) Colour;
specified in Table 2. Measure the gloss for compliance with the requirements in Table 1. (d) Name of the manufacturer and/or recognised trade mark;
7.1.8 Hard-drying time (e) Batch or code number;
(f) Quantity.
Apply a coat of coating by casting on a glass panel, prepared in accordance with SS 5 : Part A3, giving
a wet film thickness of approximately 50 ~.tm. Allow it to dry and test for hard-drying time in
accordance with the method specified in Table 2. Check for compliance with the requirements in
Table 1.
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9. SS 500 :2015 SS 500 :2015
Table 2— Test methods
Test Method of test Requirement in this
standard
Non-volatile matter 55 5: Part B2 Table ‘I
Condition in container 55 5: Part B4 6.4.2
Density 55 5: Part B7 Table 1
Brushing properties SS 5: Part 89 6.4.3
Consistency (Stormer viscometer) 55 5 : Part Bi 2 Table 1
Fineness of grind 55 5: Part B1 3 Table 1
Sheen (specular reflection 85°) 55 5 : Part El Table 1
Opacity (contrast ratio) 55 5 : Part E2 Table 1
Colour 55 5: Part E3 6.4.1
Wet scrub resistance 55 5 : Part F6 6.4.4
Alkali resistance SS 5: Part G2 6.4.7
Accelerated weathering 55 5: Part G9 method 1 6.4.5
Roller-coating properties - 6.4.3
Algal resistance Annex A of SS 345 6.2.3, 6.4.6
Hard-drying time 55 5: Part D3 Table 1
Tensile strength ASTM D41 2 Table 3
Elongation at break ASTM D41 2 Table 3
Water vapour transmission ASTM Dl 653 Table 3
Natural weathering ASTM D1014 Table 3
ASTM D3719
ASTM D610
Adhesion test (X-cut) ASTM D3359 6.4.8
Water absorption Annex A of this standard 6.6.1
Efflorescence test Annex B of this standard 6.6.3
Heavy metals
Mercury 55 5: Part C4 Table I
Lead SS 5: Part C6 Table I
Cadmium ss 5: Part C6 Table 1
Chromium (VI) IEC 62321 : 2008 Table 1
VOC limits ISO 11890 Part 1 or 2 Table 1
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Table 3 — Key performance requirements of the coating
Test item Requirement
Mechanical properties
Tensile strength Mm. 1.5 N/mm2
Elongation at break Mm. 100%
Waterproofing properties
Water absorption Max. 170 ml waterlm2/24 h
Water vapour transmission Mm. 80 g/m2124 h
Dirt pick up resistance
Natural weathering (3 months) Dc1 of at least 92
Dc2 of at least 95
Water spotting not more than 10% of tested area
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10. SS 500 : 2015
SS 500 :2015
A.1 Sample preparation
Annex A
(normative)
Water absorption test
Apply two coats of coating by brush over a porous fibre-reinforced cement panel (see 6.4.8.2), giving
each coat a wet film thickness of approximately 75 lAm and cure for 7 days.
A.2 Procedure
A funnel of about 42 mm aperture with a pipette (capacity 10 ml) is mounted with its base onto the
coated panel and sealed with silicone adhesive, as shown in Figure A.1. Upon curing, the tube is filled
with water until the 9 ml mark. The open end of the tube is sealed with masking tape in order to
prevent evaporation and entry of foreign materials.
A.4 Treatment of data
A graph of volume of water (ml) absorbed against time (day) is plotted and the best straight line is
drawn. The gradient which gives the rate of water absorbed per day (i.e. ml /m2/day) is then computed.
8.1 Substrate
Annex B
(normative)
Efflorescence test (water permeability)
A porous fibre-reinforced cement panel (see 6.4.8.2) with dimensions of 20cm x 20cm x 0.3cm shall
be used as the substrate for testing. Immerse the panel in a saturated calcium hydroxide solution for
24 h at room temperature. Remove the panel, drain off the excessive solution and dry at room
temperature for 24 h prior to use for testing.
8.2 Procedure
Coat the smooth side and all edges of the panel with the coating at the spreading rate and diluted as
recommended by the manufacturer. Dry the coating for at least 8 h at room temperature (25 °C — 29°C,
75% — 85% RH) and apply a second coat. Allow the coated panel to cure for 7 days.
Measure the pH of the coated surface by wetting the surface with a few drops of water and determine
the pH of the wet surface using a pH paper. Dry the wet surface with cotton wool.
Place the panel, painted surface upwards, on a pad of cotton wool saturated with water during the
period of testing.
At intervals of 24 h, observe for the following attributes on the painted surface:
(a) Change in PH;
(b) Sweating;
Paint film
-~. . c—rr-v-t--v—~—- . I
A.3 Observation
The volume of water (ml) absorbed is monitored every 24 h for 2 weeks.
Measuring pipette-funnel
Silicone sealant
V
Figure A.1 — A set-up of water absorption test
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(c) Blistering; and
(d) Disintegration of paint film — wipe the surface with a wet cotton wool and observe for staining
of the cotton wool by the paint film.
The test shall continue for 14 days.
8.3 Interpretation of results
The coating shall be deemed satisfactory, if throughout the test period, the painted surface is free from
sweating, blistering and disintegration of the coating film.
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11. SS 500 : 2015 SS 500 :2015
Annex C
(informative)
Testing arrangements
C.1 When a purchaser orders a supply of paint to this standard, it is not contemplated that all of
the tests specified shall necessarily be made on samples representative of every batch or
consignment. The extent and frequency of the testing will depend on many factors and a definite
schedule cannot be laid down.
C.2 The following classification of test is, however, submitted for the guidance of purchasers.
Further, it may also provide a useful basis on which to establish a test programme when a testing
authority, acting on behalf of a purchaser, is required to examine a number of batches for compliance
with this standard.
Group 1. Tests to be made on the first and every subsequent batch.
Colour
Condition in container
Applicability and appearance
Density
Consistency (Stormer viscosmeter)
Fineness of grind
Hard-drying time
Opacity (Contrast ratio)
Sheen (Specular Reflection at 85°)
Non-volatile matter
Group 2. Tests to be made on first batch and subsequently only at intervals as agreed between
purchaser and vendor.
Alkali resistance
Wet scrub resistance
Accelerated weathering
Algal resistance
Heavy metals content
VOC content
Tensile strength and elongation at break
Water vapour transmission
Natural weathering
Adhesion test (X-cut)
Water absorption
Efflorescence
Group 3. Tests to be made on the first batch and on request by purchaser.
Keeping qualities
ABOUT SPRING SINGAPORE
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SPRING Singapore
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#01-02 South Tower, Solaris
Singapore 138628
Tel: 6278 6666
Fax: 6278 6667
E-mail: smeinfoline~spring.gov.sg
Website: http://www.spring.gov.sg
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specifications or requirements on a particular product, process or service in an area where there is an
absence of reference standards. Unlike Singapore Standards, they are issued for comments over a
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