Damp Patches On Block Wall

[Luke Cropwalker]

Does anyone have any recommendations for a product to stop a bit of damp coming through a concrete block wall in a grain store? The wall has been up a number of years, there has been a small amount of corn sticking to the inside of the wall in a few places, this really needs treating to stop it happening again

 

[HatsOff]

Best bet is to figure out where the water is coming from and stop it at source, rather than trying to seal it internally.

Defective gutters? High external ground level?

 

[Ffermer Bach]

as well as the above, could you paint the wall with tanking on the inside?

 

[Luke Cropwalker]

Thanks for the replies so far, the water seems to run down the cladding and blow onto the side of the shed that gets all of the wind and weather, only seeps through in a few patches, it wouldn't take much fixing with the correct product.

 

[Exfarmer]

I think you need to fix the cladding. Painting the wall with a waterproofing will just move the problemeventually to the floor

 

[br jones]

sort the problem outside

 

[Forkdriver]

Porous concrete blocks can be improved, not cured, by a silicone waterproofing sealant. Rendering the outside is the only long term solution.

 

[Little squeak]

I had a simlar problem and extended the cladding down to the floor (and dug it in) that way the outside of the bricks stayed dry

 

[Bongodog]

Sounds like you have an unsuitable shed design, as others have said you need to stop the water penetrating the outside of the wall, rather than waterproofing the inside and ending up with a saturated wall. Do this and eventually the moisture will emerge somewhere. Just seen previous post pop up, which would be my approach, extend cladding down and keep the wall dry.

 

[chipchap]

Clad the outside.

concrete panels can suffer similarly.

Shuttered concrete isn’t porous, and is the best job

 

[Mike22]

Use a waterproof masonry cream, will prevent the water ingress while not trapping moisture like sealants - https://emperorpaint.co.uk/the-invisible-insulation-barrier