Custom Building Products has expanded its family of RedGard products with the addition of RedGard Uncoupling Mat.

Uniquely designed for installations using polymer-modified thin set mortars, RedGard Uncoupling Mat is an environmentally-friendly crack isolation, waterproofing and vapor management membrane for tile, porcelain and natural stone installations over most substrates including oriented strand board (OSB), plywood and concrete, according to the company.

“RedGard Uncoupling Mat is lighter than traditional backer boards, reducing the weight of tile assemblies and making it easier to carry on job sites,” said Eric Carr, director of product and channel marketing-construction. “It requires no dry time so flooring contractors can complete projects quickly and easily.”

Featuring heat-welded fleece on top and bottom, RedGard Uncoupling Mat delivers crack-isolation performance by locking mortar onto the mat at every point of contact for a strong mechanical bond. No mechanical fasteners are required. It is engineered to absorb stress and preserve the surface and integrity of tile and grout. In addition to providing strong crack prevention in tile, waterproofing and vapor management in tile installations, RedGard Uncoupling Mat contributes to green building standards. 

 “We recommend installing RedGard Uncoupling Mat, and the tile over it, with a polymer-modified thin set mortar, which is consistent with TCNA guidelines," said Steve Taylor, director of architectural and technical marketing for Custom. “This helps to ensure a quality installation that meets today’s standards.”

Formerly called SpiderWeb II, RedGard Uncoupling Mat is made from more than 70% recycled pre-consumer materials by weight and contains no volatile organic compounds (VOCs), which make it eligible for U.S. Green Building Council LEED MR4 credits. It also meets the American National Standards Institute (ANSI) A108.01, A108.17, A118.10 and A118.12.

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