Waterproofing single skin blockwork garage

NWPG said:

Hi all,

What's the best way to resolve water ingress on single sink blockwork (exterior painted)? I only see the water patches on one side and the back wall, both of which are more exposed and usually in heavy driving rain.

Looking for options that I could do myself and aren't to expensive. Have seen several solutions, but all require the surface to be bare. Any advice/help would be really appreciated.

Many thanks in advance.

Dean

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Everbuild Febtank Super Tanking Slurry

Do you need to waterproof concrete or masonry? Do so easily with a coat of this tanking slurry from Everbuild. When mixed with water, the slurry forms a durable waterproof layer that's quick and easy to apply. When mixed correctly, this water-resistant slurry is suitable for both indoor and...

www.toolstation.com

John j said:

I put 20 mm mono on mine which stopped it . Gonna put some insulation on and thin coat it once I get round to it

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bobski said:

For a DIYer
Two coats of something like this

Everbuild Febtank Super Tanking Slurry

Do you need to waterproof concrete or masonry? Do so easily with a coat of this tanking slurry from Everbuild. When mixed with water, the slurry forms a durable waterproof layer that's quick and easy to apply. When mixed correctly, this water-resistant slurry is suitable for both indoor and...

www.toolstation.com

Click to expand...

NWPG said:

Can this be applied over paint?

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bobski said:

If you're not sure on the grinding.

Here's a little demo video on how to grind properly.

Probably best to start from 30secs in.

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bobski said:

It'll stick


No-one will guarantee much over paint as you're having to trust the adhesion of it to the substrate.


If the paint is well stuck and not flaking.........


If not, scrabble it, or grind away.

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