Do the DIY Damp Proof creams work?

The dampsolve one carries a BBA certificate 10/4781 give it a read, personally I think I would prefer a company do it with an insurance backed guarantee but if you really want a go yourself then it looks ok.
 
Thanks, i'll let him know :).

The other option he was considering was taking a couple of bricks out at a time and putting a DPM down. It's a lot of work though, so it might be worth giving this stuff a try first.
 
Awesome, didn't even know this sort of stuff existed.

The morons that built the extension on the back of our place (previous owners) just built directly onto the concrete of the back yard, no damp membrane, no damp course inthe walls, etc.

The room is only usable for the washing machine and other junk as the walls turn black after a couple of weeks.

If this stuff is as good as it sounds I might be able to "seal" the walls and actually have some usable space!
 
SB118 said:
Awesome, didn't even know this sort of stuff existed.

The morons that built the extension on the back of our place (previous owners) just built directly onto the concrete of the back yard, no damp membrane, no damp course inthe walls, etc.

The room is only usable for the washing machine and other junk as the walls turn black after a couple of weeks.

If this stuff is as good as it sounds I might be able to "seal" the walls and actually have some usable space!
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Don't know what floor covering you have, but I have the same problem here with a shed built on to the house.

Damp coming through the floor, no dpm, etc, solved it by painting two coats of a liquid water proofer on the floor & up the walls to a height of 200mm.

Fortunately the walls were bared, so no problems cutting back render or plaster.

I laid 50mm of Jablit polystrene sheet first, followed by a floor screed, then gave that another of of liquid waterproofer before laying quarry tiles, walls will get a coat of hardcoat plaster eventually, but three years on, it's bone dry & no damp.
 
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Orifice said:
http://www.heritage-house.org/pages/the-fraud-of-rising-damp.html
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Hmm, the guy writing that article doesn't seem to know what he's talking about and the source is a guy trying to sell a book. Not saying it's not true as i don't really know. They have been putting in dpms since the Victorian era or maybe earlier? so there must be something in it.

That said, a lot of the time it is usually something else causing the damp, like a bridged cavity or even condensation. But the cowboys doing these dp injecting wont tell them that as they make a nice profit from doing the job, even if it doesn't need doing. I think that's why he's wanting to do it himself.
 
He's not really the only person that talks about it. My house has a 3 lines of holes from injected damp proof courses, none of which have achieved anything, apart from making the bricks and mortar look terrible. The real cause was external ground level too high, which wasn't mentioned by any of the damp remedial companies.

The only thing that shows the appearance of the damp being "cured", is that they re-plaster with sand/cement, which completely hides any occurrence of it
 
It'll only remedy certain kinds of damp, it might solve rising damp (And rising damp is rare).

It won't solve bridged cavities or the common one everyone seems to deny is happening in their home for some inexplicable reason, damp due to poor ventilation.
 
NO!!!!!

These do not work and can, in fact, cause more issues.

They're silicon base and will eventually disperse from the bricks. If your dad has a damp problem it will likely be a mechanical issue. ie. leaking gutters, pipes, condensation etc. or the fact he has no dpc or it has been breached somehow.

Rising damp is somewhat of a myth made up by the companies who make this stuff...
 
I think the dpc was a bitumen one that has perished. In his bedroom he took a few bricks out and then put some dpm down and bricked it back up and worked his way along doing that and it seems to have solved the problem. It took him weeks to do it though, so he was hoping the creams would make it an easier job.
 
SeatIbiza said:
NO!!!!!

These do not work and can, in fact, cause more issues.

They're silicon base and will eventually disperse from the bricks. If your dad has a damp problem it will likely be a mechanical issue. ie. leaking gutters, pipes, condensation etc. or the fact he has no dpc or it has been breached somehow.

Rising damp is somewhat of a myth made up by the companies who make this stuff...
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LOL

While here are a myriad of reasons for damp dismissing rising damp as a myth is ridiculous.
 
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All you need to do is put a stack of bricks in a bucket of water and then cover the bottom brick with water and come back in 24 hours to see that rising damp is not a myth. That's not to say its the only damp problem you will come across or indeed if chemical injection is a decent solution but to say its a myth is just stupid.
 
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