Bona R540 Moisture Barrier 1.32 Gal
Bona R540 is a one-component polyurethane reactive primer, used on absorbent and non-absorbent sub floors before the use of Bona R851, R850T and R859, and R880 wood floor adhesives. Especially useful when used as a primer on sealed plywood subfloor systems such as AdvanTech flooring. The product can also be used for damp proofing concrete floors and substrates up to 18 lbs or 95% relative humidity.
Coverage:
Vapor Retarder/Wooden subfloors – 300-400 square feet per five liters.
One coat primer– 400-600 square feet per 5 liters.
For moisture barrier protection up to 18 lbs or 95% RH, apply two coats, each at 400 square feet per 5 liters.