I think it is really hard to tell even though the developer may say they used a certain branded paint. There are many reasons they may have reduced the quality of the paint either to cut cost or make their painting job easier (ie: add water to make it less thick = easier to paint). You will only know the results when the surface become powdery after that.

So if you have decided to repaint, then 1 coat of sealer (fyi, sealer is sealer, not water based white paint or matex or maxilite) would be needed for interior and exterior.

Then in the future when you want to re-paint the interior, just go over it with the color you want without sealer (unless there is peeling due to water damage). For exterior still have to clean and apply sealer.

Hope this info helps

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Added on October 15, 2012, 1:15 amIf confirm the paint is cheap type then definitely need sealer. Make sure your painter get the actual sealer and not just white paint.

As for the layers, if darker colours then go for 2 layers or more.

This post has been edited by abitnuts: Oct 15 2012, 01:15 AM

You can roughly calculate how many litre you need. 1 litre of paint can cover approximately 60-70 square feet. You can do a basic calculation of your cost from there.

Hope that helps.

Hi RickOoi,
The way I do it is to calculate the square footage of my walls. 60-70 square foot would need around 1 litre of paint for a single layer. So you could get an approximate amount of paint needed from there. It is hard to tell how much paint is needed for 18x65 size house as the number of walls may have different number.

Nippon, ICI and Jotun are good and popular brands and each brand have cheap, medium to high cost paints depending on features.

Features:
-washable
-covers hairline cracks
-low VOC
-fungus resistant
-UV protection (for exterior)
-low sheen
-high sheen
-matt finish
-just plain water based paint

Things to consider:
-Sealant needed? May have to check the condition of existing walls.
-Features required?
-Budget?
-Colors?

If you are getting a contractor to do it, they may recommend the paint to you, so it would be much easier if you know what features you want. Otherwise they might ask you to buy the paint and they just paint it, in that case you have to know what features you want and also the brand. Do some shopping around to find out what features is available and how much those brands are charging for those features.

If you are going to be repainting every 3-5 years, then getting the economical to medium cost paint would be more worth it. Such as Nippon Matex/Matex Gold.

Hope this info helps.

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Added on October 18, 2012, 11:39 amHi RickOoi,
The way I do it is to calculate the square footage of my walls. 60-70 square foot would need around 1 litre of paint for a single layer. So you could get an approximate amount of paint needed from there. It is hard to tell how much paint is needed for 18x65 size house as the number of walls may have different number.

Nippon, ICI and Jotun are good and popular brands and each brand have cheap, medium to high cost paints depending on features.

Features:
-washable
-covers hairline cracks
-low VOC
-fungus resistant
-UV protection (for exterior)
-low sheen
-high sheen
-matt finish
-just plain water based paint

Things to consider:
-Sealant needed? May have to check the condition of existing walls.
-Features required?
-Budget?
-Colors?

If you are getting a contractor to do it, they may recommend the paint to you, so it would be much easier if you know what features you want. Otherwise they might ask you to buy the paint and they just paint it, in that case you have to know what features you want and also the brand. Do some shopping around to find out what features is available and how much those brands are charging for those features.

If you are going to be repainting every 3-5 years, then getting the economical to medium cost paint would be more worth it. Such as Nippon Matex/Matex Gold.

Hope this info helps.

This post has been edited by abitnuts: Oct 18 2012, 11:39 AM

I think all brands of paint have roof paints available. It would be more expensive than your interior/exterior paints and colors may be limited at small hardware shops.

Would like to make a correction. It would be more expensive than the economical and medium cost paints. RM100++.

Sealant have to be applied before putting on Nippon Weatherbond. The thing about Weatherbond or Weathershield is the surface needs to be cleaned and treated properly, apply sealant and then apply paint then there is a possibility that it will last 5 years . If you want a confirmation that it will last 5years or more, then I believe Nippon and ICI have a crew of professional painters where they can confirm the paint will last > 5years.

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Added on October 19, 2012, 7:22 pmI got this OFF Nippon website

Surface Preparation:
Remove all loose, defective paint or powdery residues by wire brushing, scraping or high pressure
water jet. Treat any areas affected by fungus growth with Nippon Fungicidal Wash Solution. Repair
cracks, uneven surfaces with Nippon ACS Putty or suitable fillers. Smoothen the putty / filler areas
with sandpaper. Allow all surfaces to dry completely prior to painting. Avoid painting when the
moisture content and alkalinity of the walls are still high. (Recommended painting specification
requires the moisture content of the walls to be below 16% measured by protimeter and alkalinity of
the walls to be below pH9.)

Previously Painted Surfaces:
Remove all unstable paint film, loose chalk, dust and foreign matter. Make good any surface defects,
clean off and dry. Spot prime with NIPPON VINILEX 5100 WALL SEALER.

This post has been edited by abitnuts: Oct 19 2012, 07:22 PM