KOSTER American's VAP I® Moisture Vapor Reduction Systems were scientifically designed to minimize the amount of moisture coming through a concrete slab.
Features include:
Easy to apply
VOC compliant.
Little to no odor.
Unaffected by a pH 14. (ASTM D-1308 test method)
Up to 97% reduction in moisture vapor emissions (ASTM E-96-05)
1056 psi (100%) cohesive failure of substrate. (ASTM D-7234)
10 year, multi-million dollar independently insured warranty.
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 (ASTM E96 wet: .04-.09), 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 (i.e. KOSTER LF-VL) may be applied.
Always adhere to the specifications in the respective Technical Guidelines.
Moisture Vapor Reduction System under resilient flooring systems
Moisture penetration through concrete slabs can cause severe problems for subsequent resilient 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 a very low permeance rating (ASTM E-96 wet method: 0.4-.09), excellent bonding characteristics and is resistant to sustained high alkalinity (pH 14). The KOSTER VAP I® 2000 vapor reduction system is applied to properly prepared, solid and sound substrates that are free of bond inhibiting substances. In certain situations, resilient flooring (i.e. VCT, sheet vinyl, etc) may be applied directly to the KOSTER VAP I® 2000.
Always adhere to the manufacturer's specifications for use over a non-prous substrate as well as the respective Technical Guidelines.
Moisture Vapor Reduction System under cementitious underlayments
Moisture penetration through concrete slabs can cause severe problems for subsequent resilient 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 a very low permeance rating (ASTM E-96 wet method: 0.4-.09), excellent bonding characteristics and is resistant to sustained high alkalinity (pH 14). The KOSTER VAP I® 2000 vapor reduction system is applied to properly prepared, solid and sound substrates that are free of bond inhibiting substances.
In certain situations, resilient flooring (i.e. VCT, sheet vinyl, etc) may require a cementitious underlayment to act as a blotter layer for the adhesive, or to level and smoothen the finish prior to installing the adhesive and final flooring system. In this event, a non-porous primer such as KOSTER VAP I® 06 Primer must be installed to adhere the underlayment to the KOSTER VAP I® 2000 System.
Always refer to the manufacturer's specifications for use over a non-prous substrate as well as the respective Technical Guidelines.
Moisture Vapor Reduction System with Isolation Barrier
KOSTER VAP I® 2000 protects flooring systems against moisture and high alkalinity. For more than 16 years, this system has been successfully installed under all types of flooring to guard against osmotic blisters and other deleterious effects caused by moisture and / or high alkalinity.
Concrete floors which contain water soluble, unreacted sodium and / or potassium silicates usually can not be coated when certain thresholds of these compounds are exceeded. These unreacted silicates may come from a number of sources such as a floor hardeners, concrete polishing, integral additives, and some vapor reduction systems and may act as a bond breaker to any subsequently applied flooring system. In these cases the KOSTER IB (Isolation Barrier) is applied to the concrete first in order to create an isolation barrier between substrate and the moisture vapor reduction system. The KOSTER IB has self leveling properties which make it easy to apply. KOSTER VAP I® 2000 is then applied on top of the cured isolation barrier. The special chemistry of the KOSTER IB provides a permanent barrier against elevated levels of alkaline salts and concrete background moisture.
The prepared concrete substrate is edged using hand grinders with dust collection capabilities, the main floor is shot blasted to a “medium shot blast (CSP 4)” to remove all loose dust, old coatings, patch material, debris and any other deleterious or bond inhibiting substances. The floor is then cleaned of all fugitive shot and all residual dust is vacuumed up. The KOSTER IB is applied to the concrete substrate at a spread rate determined by the moisture drive and level of contaminates identified in the substrate. After a 24 hour cure time the KOSTER IB is then “brush blasted” to a “light shot blast (CSP 2)”. After residual shot and dust clean up, the KOSTER VAP I® 2000 may be applied at the previously established spread rate as determined by moisture testing. Concrete floors which were formerly not suitable to receive a moisture vapor reduction system can now be coated and made fully accessible for any type of subsequent flooring system.
Always adhere to the specifications in the respective Technical Guidelines.
