Moisture Vapour Control

Moisture Vapour Control:

Moisture penetration through concrete slabs can cause severe problems for subsequent flooring systems. High concentrations of moisture and alkalinity (levels determined through testing) can lead to the deterioration of flooring adhesives and delamination of coatings by osmotic action. Even with relatively low moisture emissions (MVER), elevated alkalinity can compromise even the toughest flooring system adhesives. To avoid this problem the concrete slab should be primed with a material that will tightly bond to the concrete under these very adverse conditions.

KOSTER VAP I® 2000 is a special material which fulfils all of these functions; it has very low permeance, excellent bonding characteristics and is resistant to sustained high alkalinity (pH of 14). The KOSTER VAP I® 2000 vapor reduction system is applied to shot blasted, solid concrete substrates that are free of bond inhibiting substances. After curing, a floor covering may be applied. For more technical information contact us or visit the Koster website at

Contact our office today to discuss your specific moisture vapour control and waterproofing needs.