AQUABAR “ B ” HARDWOOD FLOOR & TILE UNDERLAYMENT ®
In the battle against interior moisture damage, the best defense is a strong offense. When you block moisture vapor from creeping behind finish materials or reaching moisture-sensitive substrates, you help increase the useful
“ An extremely effective moisture vapor retarder
life and appearance of finish surfaces. To help win the battle, the Fortifiber Building Systems Group ® offers Aquabar “B” as inexpensive insurance to reduce moisture-related problems.
for use in a variety of interior construction applications. ”
Aquabar “B” hardwood floor and tile underlayment is an extremely effective moisture vapor retarder for use in a variety of interior construction applications. Consisting of two layers of kraft paper laminated with asphalt, Aquabar “B” is a nono-reinforced 30/30/30 duplex type Grade “B” paper. An Investment That Pays Dividends Aquabar “B” passed the stringent requirements of California’s Section 01350 Indoor Air Quality emissions standard. Aquabar “B” is often considered to be cleaner and easier to work with than other materials, such as roofing felt, coated paper and poly film. It has little or no odor. Because it is an effective moisture vapor retarder, Aquabar “B” reduces vapor migration to help protect wood floors and tile substrates from the damaging effects of moisture. Ideal for Wood Flooring and Tile With a moisture vapor permeance of less than 1, Aquabar “B” is a superior vapor retarder under wood flooring applications. Aquabar “B” helps slow moisture vapor originating below the floor system, allowing the wood flooring to acclimate gradually. By reducing the rate of moisture migration, Aquabar “B” protects against moisture vapor related floor problems such as buckling, cupping or cracking. As a semi-permeable material, Aquabar “B” is much less likely than impermeable common poly film to trap moisture condensation between it and the sub-floor. Aquabar “B” also acts as a “slip sheet” to minimize dust and reduce noise. Aquabar “B” is also suitable in interior tile and stone applications as a Class II moisture vapor retardant membrane (or cleavage membrane) for use behind cement backer units. It is also suitable for use as a cleavage membrane in mortar bed applications over wood or concrete substrates. Aquabar “B” reduces the potential for and extent of damage caused by moisture vapor migration in tile installations. Meets ANSI A108.02 Sec. 3.8.7 materials standard for tile.
Aquabar “B” helps slow moisture vapor originating below the wood floor system.
H IGH M OISTURE R ESISTANCE
L OW V APOR P ERMEANCE
C LEAN & E ASY I NSTALLATION
S EMI - P ERMEABLE C LASS II M EMBRANE
M ADE IN USA
P ASSED C ALIFORNIA CA01350 I NDOOR A IR
UALITY R E UIREMENTS
Decades of Proven Performance Aquabar “B” is a product manufactured by the Fortifiber Building Systems Group. With more than a seventy-five year history of proven performance, technical expertise and practical know-how, the company has become a trusted partner to builders, architects and code officials.
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