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dens dapDensShield® Tile Backer

DensShield® tile backer is a mold-resistant tile backer board with fiberglass-mat facings and a unique acrylic coating that blocks moisture from entering the wall or floor cavity.

Greenboard is out! So now what?
International Building Code (IBC) and International Residential Code (IRC) changes made in 2006 approve the use of a glass-mat gypsum backers in wet areas such as tubs and showers, where greenboard is no longer approved. These code changes impact installation requirements in both commercial applications (PDF: 230KB/2pgs) and residential applications (PDF: 225KB/2pgs). DensShield tile backer dramatically outperforms heavy, hard-to-install cement backer boards in moisture protection, strength and ease of installation.

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DensShield® tile backer is the ultimate tile backer board for walls, ceilings, countertops and floors. It is the ideal substrate for tile and non-tile installations in wet and non-wet applications, areas of high humidity and for fire-rated assemblies. Hundreds of millions of square feet of DensShield tile backer have been installed over the past 19 years with virtually no claims.

DensShield tile backer is the only backer with a built-in moisture barrier that prevents moisture from penetrating into the wall cavity or floor substrate. The panel is composed of a proprietary, water-resistant treated core that is covered front and back with fiberglass mats. These mats are integrated with the core, preventing delamination problems.

When tested, as manufactured, in accordance with ASTM D 3273, DensShield® tile backer scores a 10, the highest level of performance for mold resistance under the ASTM D 3273 test method.

The score of 10, in the ASTM D 3273 test, indicates no mold growth in a 4-week controlled laboratory test. The mold resistance of any building product when used in actual job site conditions may not produce the same results as were achieved in the controlled, laboratory setting. No material can be considered mold proof. When properly used with good design, handling and construction practices, DensShield paperless tile backer boards provide increased mold resistance compared to standard paper-faced wallboard products.

*ASTM C627, "Standard Test Method for Evaluating Ceramic Floor Tile Installation Systems Using the Robinson-Type Floor Tester," ASTM International. For referenced ASTM standards, visit the ASTM Web site,
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