I am trying to fix a damp house in Isaan. The residents ie the gf family seem happy with blistering paint.

Back in the uk where I still live there appears to be various products that could help. This could be an example. Dryrod Damp-Proofing Rods

See here also and other places Easy DIY Solution to Treat Rising Damp in Walls

There is of course the the pump and squirt stuff. So where to buy. ??? in Thailand

any thoughts or comments

If the residents are happy with it, why bother?

Most of correcting blistering paint in labor, there is no magic spray that makes it go away.

I think the issue is similar to other construction issues. Electrical standards being an example. The gf sister made a point and said "we do not know any better". Try buying type A rcbo breakers for consumer boxes. The annoying irony is that often the product we look for and cannot find is actually manufactured in the far east sometimes right here in Thailand.

Edited May 18May 18 by surreybloke

1 hour ago, Yellowtail said:

If the residents are happy with it, why bother?

The reason being that i live in said house from time to time.

3 minutes ago, surreybloke said:

I think the issue is similar to other construction issues. Electrical standards being an example. The gf sister made a point and said we do not know any better. Try buying type A rcbo breakers for consumer boxes. The annoying irony is that often the product we look for and cannot find is actually manufactured in the far east sometimes

I have no difficulty finding type A RCBO breakers, nor do I have any difficulty finding a paint system that does not blister.

Yellowtail , thanks for the feedback. Would you mind pointing me in the right direction please. I am always of the opinion that covering the moisture merely seals it in the wall rather than preventing the rising damp in the first place.

4 hours ago, Yellowtail said:

I have no difficulty finding type A RCBO breakers, nor do I have any difficulty finding a paint system that does not blister.

4 hours ago, Yellowtail said:

I have no difficulty finding type A RCBO breakers, nor do I have any difficulty finding a paint system that does not blister.

37 minutes ago, surreybloke said:

Yellowtail , thanks for the feedback. Would you mind pointing me in the right direction please. I am always of the opinion that covering the moisture merely seals it in the wall rather than preventing the rising damp in the first place.

HomePro, Thaiwatsadu, MegaHome and any number of major DIY shop have RCBOs and consumer units that accept them.

Again: "Most of correcting blistering paint in labor, there is no magic spray that makes it go away". You're going to have to get the paint scraped off and figure out where the moisture is coming from. If a pipe in the wall is leaking, you're not fixing it without fixing the leak. If the exterior side of the wall is bare mortar or has a lot of cracks, nothing you do inside the wall will fix it.

r

You have to figure out what the problem is, before you and formulate a solution.

This product looks like what you need. I've never used it, so can't comment on its effectiveness.

https://www.ubuy.co.th/en/productuk/KWXXWNV0-sikamur-injectocream-100-rising-damp-barrier-cartridge-300-ml?srsltid=AfmBOopGefBHSyF1AilQEcPYi2T4273fcgI_Il8XY0N7sqZcLJaNr2S1

First question to be answered:

Where is the damp coming from?

1. Rising damp, because there is no d.p.c. or it is defective?

2. Wind-driven rain striking the outside of the wall?

3. Condensation from lack of ventilation and an evaporative type air-cooler or adjacent kitchen?

I would suspect probably rising damp from lack of a damp-proof course. Concrete 'cinder' blocks and bricks (except engineering bricks) are porous. Like blotting paper. I had a problem of rising damp in my 1910-built terrace house in Wimbledon in the 1970s because a wartime bomb had fallen some way behind the house, cracking the slates of the d.p.c.

Answer: I dripped from special bottles into downward sloping holes a phenolic resin sold for the purpose. Diffuses into the brickwork. Proven to be 100% effective when the house was surveyed on behalf of purchasers. But these were solid bricks and a double-brick-thick no-cavity wall.

You likely have hollow concrete blocks. Moisture can rise by capillarity to a maximum height of about six feet. It does so because of a difference of electrical potential between the ground and the wall above it. A method that is (or was) employed in the U.K. is to ring the outside of the wall at a foot or two above ground with a copper wire that branches into the wall every so often. In some cases the wire and the earth may be connected to a low-voltage D.C. electrical potential to improve matters. Normally done by a specialised enterprise. Sorry, cannot tell you more than that. If interested you will need to do a search.

If driven rain is the problem there are surface hydrofuges on the market here in Thailand, such as those produced by Sika. which can be easily applied to the exterior of a porous wall and are invisible after application.

I have a friend who just moved into a one bedroom 1920's apartment in Australia

As soon as I went to visit him I could smell the dampness

He has taken my advice and bought a portable DE Humidifier

The amount of water it collected the first few days was totally outrageous

The tub was filled after a few hours

The dampness smell had gone