Need To Apply Paint Sealant On Plastered Wall?

[becks150 0]

Dear All,

Another question, I was advised by many frens that when u plaster the whole house, u need to apply paint sealant before the actual paint.

My contractor insists that it is not necessary. Pls help!

He said need to top up $ if we really insist. We have also asked him to quote. What would be an acceptable price for a 4 rm flat?

Appreciate your comments!

Tks

[alan26 2]

Yup, your contractor is right. When we talk about painting sealant, we normally talk abt ceiling (wet area).

For example:

If you look at the ceiling in your kitchen, toilets: If you found certain portion of the ceiling to be flaky or peeling off, it would be better to

tell the contractor to scrap the existing paint and paint sealant.

If the condition is good, it's all depend on u whether u want them to paint anot.

Normally they won't paint it for u free. But there are still some contractor who is willing to do it for you.

[yoongf 11]

Lets get the facts right.

Any surface made from plaster or cement/ sand screed will be dusty to the fingers, unless the plasterer is willing to add the W1 cement harderner admixture to the mixture.

The whole purpose of wall sealer is the coat the dusty surface so that it will not feel dusty, and thus give a very strong foundation for the paint to stick. The sealer is also a very strong white background, so less paint is required to achieve the colour.

How to test.. if u stick a adhesive tape on a painted wall, and pull off, a sealed wall, the paint will not come off. If the wall did not apply sealer, likely the paint will peel off, and u will see a dusty cement coloured background.

Another good thing about sealer is that it is idiot proof. Sometimes, painter not concientious, dirty dusty wall also paint. If got sealer, it mitigates the dust issue.

Sealer is not cheap, and cost more than normal paint. There are water based and oil based. I personally prefer to use oil based cos it is better at preventing moisture stains.

[lawry 3]

Mine is a 4NG, I plastered the entire house.

My ID also mentioned sealant is not necessary, but I heard otherwise.

So I insisted on having it and she charged me an additional $150 for that.

(Not sure water or oil base)

[poseidon_gal 0]

Due to the water leakager problem on my wall.. town council guy told me to ask my ID to put one coat of oil based sealant on my wall..

hmm havent told my ID yet..wonder how much he will charge me for that..

[becks150 0]

Tks for the replies!

I have demanded my contractor to apply oil-based sealant onto the ceiling and walls of the wet area (kitchen and toilets).

Was told by another contractor that if we dont do so, the moisture will slowly breakdown the plastered wall/ceiling and dusty flakes will start to peel off. Pretty soon, my ceiling and wall will disintegrate! Furthermore, if u ingest these flaks, you will develop kidney stones. Any truth?

Still pissed that my contractor used inferior plaster to plaster my home.

[yoongf 11]

Err.. if u eat any kind of sand or dust, u will develop internal organ problems, not just cement or plaster.

Put it this way.. many ppl handle sand, plaster, cement daily for many yrs. It's not such an unusual material.

[lawry 3]

There are a lot of other house poisons that we are unaware of.

If you have time, read up on indoor pollution, the air in your house is much dirtier than the air outside.

Examples like such?

Toxic Walls

[yoongf 11]

BCA got guidebooks on construction best practices, that is good to be aware of.

http://www.bca.gov.sg/Publications/Enhance...ent_series.html

However.. take note.. to follow these practices faithfully is a very costly affair, and most reno quotes do not factor in such high standards.

[raquel 0]

BCA got guidebooks on construction best practices, that is good to be aware of.

http://www.bca.gov.sg/Publications/Enhance...ent_series.html

However.. take note.. to follow these practices faithfully is a very costly affair, and most reno quotes do not factor in such high standards.

Hi,

does that mean that if i want cement screed on my kitchen walls, i shd be asking the contractor to apply sealant too? Is there any colourless, clear sealant coz i want to retain the raw cement look.

[enivi 0]

Hi,

Anyone know if New HDB flats comes with oil based paint sealant cos i know new flat already has a coat of paint over the walls and ceiling? Do i need to let my contractor know that I want my whole house with another coat of sealant before they start the paint works?

[yoongf 11]

Hi,

does that mean that if i want cement screed on my kitchen walls, i shd be asking the contractor to apply sealant too? Is there any colourless, clear sealant coz i want to retain the raw cement look.

There are clear sealant, but sealant results in a low sheen finish. Whether that is an acceptable cement screed finish is highly subjective. Some ppl like the porous look. Normally, contractor do no suggest or do such things on own initiative, cos owner highly opinionated.