How to prevent the spread of damp

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  • Difficulty level one stars difficultylevel

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  • Difficulty levelone stars difficultylevel

Thoroughly clean and repair the surface.


Remove any wallpaper or loose paint. If mould is present, use Polycell Mould Killer. Allow new plaster to dry for 7-10 days before using this product.


Mask surrounding areas to protect from overspray.


Shake well until you hear the steel pellet rattling and then continue for 1 minute more.


Spray evenly over damp patch from a distance of 20-30cm (9″-12″) until patch is covered. Shake can occasionally during use.


Allow at least 2 hours to dry before painting or wallpapering. For heavier damp patches apply a second coat for best results.


After use, invert the can and spray until nozzle is cleared to prevent clogging.



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Find your nearest Polycell stockist:

You can find Polycell products in many supermarkets, major DIY stores and smaller independent stores throughout the UK. The range they stock may vary, so it's a good idea to check product availability with them in advance to avoid disappointment.