Long lasting and robust vapour barrier for damp substrates
Moisture penetrating from the rear and high residual moisture in green concrete substrates are frequently profoundly ruinous or extend the construction time. The special primers ASODUR-SG2 and ASODUR-SG3 have been used successfully for many years as prevention against the damaging influences of rising damp and are additionally highly chemically resistant and very much multifunctional in use. In addition to application to industrial and commercial floor surfaces and agricultural buildings, their use in private houses and apartment construction is always advisable if there is a risk of rising damp and precious floor finishes such as natural stone or parquet need to be protected.
Substrates must be load bearing, adequately sound (concrete quality min. C 20/25 and cement:sand screed quality min. CT-C35-F5) as well as free from separating and adhesion inhibiting substances such as e.g. paint residues. Dependent on the condition of the substrate to receive finishes, use suitable preparation methods such as e.g. planing.
Dust particles created during substrate preparation measures are to be thoroughly cleaned using a broom, dampening the substrate surface with mains water improves capillary penetration of material applied later.
The properly mixed 2 component material is applied in portions over the pre-wetted substrate (optically matt damp) using a twin-bladed rubber squeegee and thoroughly worked into the surface using a scrubbing broom.
In order to guarantee an even film of material over the substrate surface, the freshly applied material should be once again back-rolled with a suitable lambs wool roller.
Immediately after the material has been applied, evenly broadcast a suitable quartz sand into the freshly applied primer coat.