Our Damp Seal is a breathable primer helping moisture to escape through the film of the paint and can be applied directly onto damp wall thanks to its powerful performance. With its high coverage Valspar Damp Seal is quick and easy to apply, ensuring a faster and more durable finish for your decorating project. For the best results, use with Valspar Premium Blend v700™ Walls & Ceilings.

 

Available in 750ml, 2.5L - Pure Brillant White

Damp Seal Primer & Undercoat

Damp Seal Primer & Undercoat is rated 1.2 out of 5 by 6.
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Rated 1 out of 5 by from Wall damper than ever I have now applied this damp seal coat over a month ago, on a living room wall perfectly dry which previous paint suffered damp issues from condensation. Painted it over with a valspar paint the following week and 3 weeks later that paint is still not dry where the damp seal has been applied. It constantly leaks and leaves streaks of paint on the wall, even with a heater fan blowing on it for days. I thought I had a serious leak issue from the window but I am now getting the same result in the bathroom where I applied a coat too and only just painted over. I gonna have to scrap it all in both rooms, sand the walls and start all over again with a different product. I highly don't recommend using this as an undercoat or primer it makes more of a mess than preventing any.
Date published: 2021-01-31
Rated 1 out of 5 by from Unusable product Really poor product .... it is far too thick to paint on to walls and has run badly. The wall looks like a badly iced cake. The whole lot will have to be sanded off
Date published: 2020-07-02
Rated 2 out of 5 by from Very thick paint I bought the product to help with a damp wall due to leak from bathroom, the wall had dried out over a couple of months as didn’t want to rush painting it. Got this paint to help cover up the stains before I painted with emulsion. Very hard to work with as it’s so thick. Left over night to dry, painted the wall with emulsion and this paint is coming through and leaking streaks in the paint work! So now at a loss to what to do as I don’t want to have to start all over again.
Date published: 2020-05-17
Rated 1 out of 5 by from Very disappointed Bought this to cover over some damp marks on a bedroom wall. We washed wall with sugar soap, which removed about 60% of the marks and left to dry overnight. The following day I applied the Damp Seal by roller, it is thick but went on OK. Left for 48 hrs then applied a silk emulsion. Despite four coats of paint, I have white spots showing through and a vertical white shadow following the line of the batoning under the plasterboard. I do not understand what is going on.
Date published: 2020-10-11
Rated 1 out of 5 by from The worst purchase Used today on small bedroom wall took over an hour to cover. Very difficult to work with. Does not give smooth application.
Date published: 2020-03-14
Rated 1 out of 5 by from Far too thick painted this on a patch where we had damp and it's so thick despite me trying to make sure it wouldn't run I went back after an hour and it had slowly run thickly down the wall leaving a 'landslide' of paint along the wall which I will probably have to sand before I can paint over it
Date published: 2021-02-01
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