- Why do I still have marks after using 3 in 1 Mould Killer?
- What should I do to prepare a wall for painting or wallpapering?
- The skirtings, doorframes & doors have several chipped & flaking coats of paint on them - how do I make them presentable?
- The sealant strip has not bonded - what do I do?
- Can Expanding Foam be used around pipes?
How to prevent the spread of damp

- Difficulty level one stars difficultylevel
Step by step
- Difficulty levelone stars difficultylevel
Thoroughly clean and repair the surface.
- 1
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.
- 2
Mask surrounding areas to protect from overspray.
- 3
Shake well until you hear the steel pellet rattling and then continue for 1 minute more.
- 4
Spray evenly over damp patch from a distance of 20-30cm (9″-12″) until patch is covered. Shake can occasionally during use.
- 5
Allow at least 2 hours to dry before painting or wallpapering. For heavier damp patches apply a second coat for best results.
- 6
After use, invert the can and spray until nozzle is cleared to prevent clogging.
- 7
Questions?
Call us0333 222 7171(on working days between 08:15 and 16:45)