Ronseal one coat damp seal 25lthis 25l damp seal from ronseal is ideal for covering damp water other household stains and is a must have purchase for any redecorating project around the interior of your home it dries in 4 hours and comes in an easily storable tin can for added convenience youll only need to apply one coat to your walls as its paintable its ideal for colour matching to your existing decor