Description :

Permaproof Waterproofer is a high performance 3 in 1 waterproofer, salt inhibitor and mortar plasticiser additive designed for use in sand / cement mixes following the insertion of a new chemical DPC and in other damp proofing/ waterproofing applications.
Following a new chemical DPC injection, the correct re-plastering procedure is extremely important. Hygroscopic salts in the masonry and plasterwork introduced by rising damp may cause moisture to be attracted to the wall. This causes further dampness and decorative spoiling, giving the impression that the new chemical DPC injection has not been successful.
It is inherent that the existing salt contaminated plaster and render is removed back to the background substrate and the following re-plastering specification be followed.
Re-plastering should be carried out as long as possible after the insertion of a remedial damp-proof course. Ideally the new plaster should be applied to surface-dry walls, but in any case a drying period of at least 14 days should be allowed between installation and re-plastering wherever possible.

Features :

• Masonry joints should be raked out and all surfaces thoroughly cleaned to remove dust or other friable material.
• All trace of previous gypsum plaster must be removed.
• Any organic matter (including timber fixings) must be removed and, where appropriate, fixing Point which necessitate cutting into the background prepared.
• High suction surfaces should be thoroughly wetted or primed using Permagard SBR Bonding Additive.
• Where high levels of salt contamination are present, Permagard Salt Inhibitor can be applied to the surface before the application of the render.