To ensure effective rendering of walls protected by structural waterproofing, Dampcoursing
offers DR5, which overcomes the effects of hygroscopic salts which can be deposited
by rising damp – even after that damp has been arrested.
It completely seals walls against chlorides and other salts, and can be used above-
and below-ground level.
Conforming to BS 1881, DR5 contains selected grades of sand, with the correct blend
of sand and cement – one part cement to three parts of graded sand.
Two or three coats are applied, depending on whether the wall is above or below ground
level. Replastering is carried out to a minimum height of 750mm beyond the last visible
signs of contamination and – if possible – to the full height of the affected walls.
After application of the DR5, a final porous coat (such as Thistle Multicoat) is