My house car porch concrete roof has some cracks on it so i'm thinking to fix it with waterproof paint to prevent leakage at later.


Nippon Paint Flex 200, betul betul can fix kah ? Or anyone can recommend how to DIY with material can easily buy at hardware shop. TQ

This post has been edited by JadenFongV: Feb 1 2021, 09:10 PM

yeah, it will work, letak banyak sikit, even coat, multiple coat jgn save save, follow instruction

can last you 2-3Y

Yes, will work, best if u can cover with another roof... or tiles it up...

this paint is working so far for my old house.... the crack area u let the paint seep in...

Only 1 paint can gaodim all? I thought need sealant to fix the crack first

Not going to tile it up.. just want to fix it with simplest way

Also clean the are up 1st.. those lose gravel dust must be vacuum away.. good luck... it took few hours to settle.. also choose a hot day to do..

Fuh, all the sifu of waterproofing has lurk out...

I think it is important to know why does cracks occurred in the first place. RC is designed to cracks over time as to ensure there is no sudden failure on the building structure due to various reasons (loading, soil settlement and etc) On an additional note, it is also due to dimension stability of a material against the changes in temperature that resulting to expansion and contraction of the material.

To ensure the sustainability of a building structure, proper repair works must be carry out on the cracks and not by mere paint. For those who have done so and felt that it is a short lived solution (only for 2-3 years), it may be due to the crack has continued to widen over time and it is obviously not a healthy sign.

Cracks like this can be solved by using Flex 200. This type of acrylic waterproofing is designed to be able to withstand UV so just by using it is more than enough, the only downside is this type of waterproofing has poor dirt pickup resistance and can be quite dirty after sometimes, if you do not care about the looks then no problem at all.

This type of conventional acrylic waterproofing can lasts around 2-3 years, If you want a long lasting solution, appoint a professional waterproofing contractor and make sure they do a proper detailing job (angle fillet & de-bonding tape etc...) and waterproof the whole exposed car porch roof.

I wished to appoint a professional contractor doing this waterproofing job but they quote around RM2k-3k previously. I do not know about the market price for doing such job but that price definitely i can't afford

eh, you ask now you jawab. sendiri ckp nk prevent leak sahaja, sendiri propose flex200, sendiri nk DIY

suruh do a+b+c cakap mahal la this that.

What do you want actually?

Best way is to add a proper metal roofing over the whole thing..

Next is to silicone force fill in the cracks , flex200 weather bond and a few layers waterproof membrane paint..

Then finally cheaper is see a crack, bituminous seal fill the crack..