The molds are still there, your paint won't last that long until it turns back to the previous look. The proper way is to do high pressure water jet first, then apply Fungicide and leave overnight to kill fungus spores. Then proceed with normal painting system with 1 coat sealer and 2 coats finishing.

Btw it looks like you were using overly-thinned sealer or base paint with water/ inferior grade paint. The hiding is pretty poor.

applied the fungus killer first or spray the high water pressure first? just to confirm

Long way to go. Obviously need lots of paints if every wall need 3-4 layers.


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You should get the wire brush attachment to scrape off the old mold first. Paint won't stick if the mold is still there.

Something like this: https://www.lazada.com.my/products/14-wire-...Nze0Al&search=1

In painting well - the prep work is more important than the application of paint.

This post has been edited by ceo684: Nov 14 2020, 12:10 PM

Invest in a pressure washer.

My garden wall is double your length ... I need to paint 2 sides ... incl backlane kitchen wall.

My advise ... NEVER use white. A darker colour will need lesser coat. Not necessary to use any fungus killer. Use weather shield paint ...it last longer, washable.

This post has been edited by mini orchard: Nov 14 2020, 01:28 PM

Super Economy range white (and black) that come in RM35/7L matex/maxilite tub is different opacity from the proper custom mix colour paints costing RM90/5L.
Similar for the RM43/7L limited colour super economy colour paints. These are already super diluted and the base material is worlds different even compared to proper indoor paint even.

This post has been edited by ceo684: Nov 14 2020, 02:33 PM

Water jet to wash off the old loosen paint films and fungus, then apply fungicide and leave it for 1 day. Wash it off the next day and allow it to dry first before subsequent painting. Use proper exterior grade wall sealer and finishing.

1 coat wall sealer
2 coats finishing

If you don't overly thin your paint, normally the above system should be enough.

Colour really does not matter much, although yellowish off-white and darker colours look less dirty as stains are not that visible on these colours.

It is not true that coloured paints are better than white colour, pastel based colour including white normally contains more Titanium dioxide (what we call white powder) thus provide better hiding.

Both wall painted in Jan/Feb 2020.

Left ... Nippon Weather Shield

Right .. Nippon Matex Emulsion

Ya Matex is economy grade interior paint and is not suitable for exterior application. Weathershield/weatherbond is the go for exterior grade paint.

anyway since some of you mentioned it, these are the paints and sealer that I used.

I didn’t add any thinner or water before painting. Any comment?

This post has been edited by bcombat: Nov 17 2020, 05:36 PM


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How long do you normally wait for cement render to dry before painting? After 3 weeks of rendering, my wall still got plenty of dark grey patches

Those are ok, no problem with the paint. Just prep the wall nicely before painting.

Cheers

It really depends on the environment. But it's normal to paint after a month. If your contractor has protimeter, request to test the moisture level to be below 16 to start painting.

Your paint is ok ... did you stir the paint thoroughly b4 painting.?

Paint mixture sitting at home for 1 week is different from one that is just bought from shop.

Internal or external wall and weather affects the drying process.

hello all. Want to ask noob stuff. My apartment has just been completed, vacant unit as usual. Basic white painting that comes from developer.

Developer used white cheap paint (Jotun Jotaplast Max). I planned to do another white paint over it (with Nippon Paint Easy Wash) once cabinet installations are done.

My questions:
1. I can just paint with Easy Wash paint on top of the Jotaplast Max, right?

2. After doing the Easy Wash paint and let it dry, do i need to use a sealer? E.g. Nippon Paint Vinilex 5200 interior Wall Sealer.

This post has been edited by hirano: Dec 6 2020, 05:33 PM

1. Yes can. I did mine this way

2. I did sealer for mine after getting key. No issue so far. Almost 3 years already.

For the sealer. I can use it after all painting done right? As the top coat. Not so sure on this cos never used.

Firstly, is adviseable to paint first b4 installation of cabinets. Any stain or dirt mark after installation can be touched-up using balance paint.

1. Yes

2. No.

Sealer is the first layer on bare cement plaster as the "innerwear" layer. It won't be suitable for going out, so need to wear "clothes" which is the top coat paint.

So as for your question, don't be a superman (wearing innerwear on top of clothes)