Roberts - Aquabar "B" Water Vapor Retarder 36" x 167' (500 sq ft)

Aquabar "B" Floor and Tile Underlayment is an extremely effective vapor barrier for use in a variety of interior construction applications. Made from two layers of kraft paper laminated with asphalt, Aquabar "B" is an unreinforced 30/30/30 duplex Grade "B" paper. In the fight against interior moisture damage, the best defense is a powerful offense. When you prevent water vapor from seeping under finishing materials or reaching moisture-sensitive substrates, you help increase the useful life and appearance of surface finishes. To help win the battle, Fortifiber Building Systems Group offers Aquabar "B" as an inexpensive insurance policy to reduce moisture-related problems.

• Ideal underlayment for interior installations of: ceramic, porcelain, or stone over cement board, plywood, or concrete; and finished or unfinished wood floors over plywood or concrete
• Most commonly used under wood flooring, ceramic tile, and stone veneer
• The subfloor barrier slows moisture migration and helps prevent warping, sagging, and cracking
• An extremely effective moisture vapor retarder for a variety of interior construction applications