2. What is Waterproofing?
•Waterproofing is a method of protecting surfaces against the
destructive effects of water
•Sir, sa loob lang po nilalagay water proofing?
•Pano po yung tubig galing sa labas papasok naman
3. What are the common types?
Discuss mo na lahat type at kelan
ginagamit.
BITUMINOUS
MEMBRANE
CEMENTITIOUS
COATING
4. •usually used at roof decks or areas
where direct rain, or standing water
are eminent. The materials used
depending on the manufacturer is
either Asphalt Paper laid with hot
asphalt, impregnated asbestos felt,
sometimes thick Polyethylene
sheets is also used.
•Pros and Cons pls
•Brands, specs, thickness,
BITUMINOUS MEMBRANE
GENERAL CONCEPT
5. BITUMINOUS MEMBRANE
METHODOLOGY
Clean the Area
1
Before application of
waterproofing, areas to be
applied on must be clean
and free from debris and
other unwanted materials.
Cure din ba dapat? O okay
lang bagong buhos
6. WALL REGLETS / OFF
SET
BITUMINOUS MEMBRANE
METHODOLOGY
Provide wall reglets
2
At least 150mm up the walls
to properly terminate
waterproofing material.
Bat po subcon namin 200 at
300mm ang requirement
Ano po yung reglet? Ano po
size nya?
7. BITUMINOUS MEMBRANE
METHODOLOGY
Apply asphalt primer
3
This is to prepare the
surface for accepting the
membrane and to improve
the overall adhesion of the
membrane to the surface
substrate
Ano pang apply? Ilang
beses po? Gaano katagal
bago ulitin? Gaano katagal
bago pwedeng latagan ng
membrane?
8. BITUMINOUS MEMBRANE
METHODOLOGY
Installation of membrane
4
Heat membrane using
torch. Carefully lay down
heated sheet on the
surface. Let it cure for 24
hours.
Paano po yung dugtungan?
Paano po yung sa tubo?
Ano po splice sa side at sa
tapat?
9. Testing
5
area must be tested for leaks and
water seepage for 24hrs. In the event
that no water leaks / seepage has
found in a span of 24hrs, the area will
be dewatered and protective topping
must be applied to prevent damages
on the waterproofing.
Pwede po ba wag na mag scratch
coat diretso adehesive at tiles na, kasi
mauubos na po yung drop eh
Paano po pag di ko kita yung ilalim or
gilid para macheck?
BITUMINOUS MEMBRANE
METHODOLOGY
12. •Usually used at T&B and
Balconies. Flexible cementitious
waterproofing membranes
comprise a mix of dry cement and
sand, and liquid latex. The materials
are mixed on construction sites
resulting in a relatively thin,
cementitious liquid that can be
applied by brush or roller onto
different substrates.
•Prod cons, price, specs, types?
San ginagamit?
CEMENTITIOUS COATING
GENERAL CONCEPT
13. Clean the Area
1
Before application of
waterproofing, areas to be
applied on must be clean
and free from debris and
other unnecessary
materials. Patch any holes
or cracks including any
open joints where the floor
and wall meet
CEMENTITIOUS COATING
METHODOLOGY
14. Provide wall off sets
2
At least 150mm up the walls
to properly terminate
waterproofing material.
Bakit po yung subcon
namin 300mm daw?
Pano po yung tubo, bat po
di pinutol, pano po
termination sa pipes
CEMENTITIOUS COATING
METHODOLOGY
15. Apply 1st Coat
3
Make sure to cover all areas
including wall offsets. Allow
a minimum of eight (8) hours
drying time before applying
2nd coat.
May tamang pahid po ba?
O pwede po freestyle?
Pahaba? Pabilog?
Ano po ginamit pang apply?
Bakit po parang 100mm
yung pahid sa wall? Okay
lang po ba yun?
CEMENTITIOUS COATING
METHODOLOGY
16. Apply 2nd Coat
4
Make sure to cover all areas
including wall offsets. Let
cure for 24 hrs before
testing.
Same questions po kanina
Paano po diskarte sa tubo?
Sa pinto?
CEMENTITIOUS COATING
METHODOLOGY
17. Testing
5
area must be tested for
leaks and water seepage
for 24hrs. In the event that
no water leaks / seepage
has found in a span of
24hrs, the area will be
dewatered and protective
topping must be applied to
prevent damages on the
waterproofing.
Bakit po membrane yung
picture? tsaka bakit po
walang wall offset? hehe
CEMENTITIOUS COATING
METHODOLOGY
18. CEMENTITIOUS COATING
WRONG PRACTICES
Exposed Waterproofing – bakit po sa movies sa ibang
bansa, yunf roofdeck po nila, walang topping yung
waterproofing, exposed lang yung membrane?
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