Blackfriar Interior Seal Damp is excellent for use prior to decorating as it can be painted or papered over. It is suitable for surfaces such as plaster, brick and cement, but is not recommended for wood. Interior use only. Application method brush and roller. Coverage12m/L/Coat Touch Dry 2-4 hours Hard Dry 3 days Recoatable 16 hours Blackfriar Interior Seal Damp Size 1 litre