Roberts - Aquabar "B" Water Vapor Retardant 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 up of two layers of Kraft paper laminated with asphalt, Aquabar "B" is an unreinforced 30/30/30 duplex Grade "B" type paper. In combating indoor moisture damage, the best defense is a powerful attack. 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 low-cost insurance to reduce moisture-related problems.

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