Thompson Tds750 750Ml Da mp Seal

Successfully blocks the water stains on the wall.

Works when you put a 2nd coat, seals outside walls.

Nice thick paint. If patch painting, the patch will show though when painting over with emulsion. Feather the edges around the stain with an increasingly drier brush and this goes away.

I have used this product previously to help prevent external damp from penetrating too far into a bedroom wall which was on the front elevation of our house. The house was built 1895 and the bricks used to soak up the wet all through the winter and tend to dry out through summer - a continuing cycle. Unfortunately the dampness - while slowly drying out - would permeate through to the inside wall surface, leaving residual marks and causing wall paper to decay and peel. We stripped off all the paper, scraped the wall then applied 2 heavy coats of this product to the wall, waiting a full day between coats. Yes, the coating does smell! It’s spirit-based, it needs to be to prove so effective. We overpainted with anti-condensation paint (2 coats) then standard ‘endurance’ emulsion and have had no further staining for the past 3 years. It is great for what it sets out to do. It is not effective when preparation is not done well, or done at all, but it is excellent for the job we asked it to do.

Damp patches

Very Good 100% Recommended. the best damp seal on the market, fast dry 4h job done. no smell like another .

Work just as advertised

Does what it says on the time, two coats and problem solved. Brilliant.