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Tile & Flooring Underlayment

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 agains moisture vapor related floor problems such as buckling, cupping or cracking. As a semi-permeable material, Aquabar "B" is much less likely than 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.