As with any building material, avoiding water exposure during handling, storage and installation, and after installation is complete, is the best way to avoid the formation of mold or mildew.ĢGeorgia-Pacific recommends DensShield® Tile Backer for tile applications in wet areas such as showers where 2006 or later IBC or IRC are referenced. However, the product is not intended for immersion in water or prolonged exposure to moisture. When properly used with good design, handling and construction practices, ToughRock® Mold-Guard™ Gypsum Board provides increased mold and moisture resistance compared to standard paper-faced wallboard products. No material can be considered mold proof. 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. 2ġThe score of 10 in the ASTM D3273 test, indicates no mold growth in a 4-week controlled laboratory test. This board may be used in wet areas behind tile, such as tub and shower areas, when C1396, Section 7 is allowed by local building code in such applications. 1 It’s ideal for high humidity interior areas such as kitchens, bathrooms, basements and laundry rooms. Molds reproduce by creating tiny spores (. When tested, as manufactured, per ASTM D3273 (“Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber”), ToughRock Mold-Guard Gypsum Board achieved a score of 10 – the best possible score for this test. Molds can grow on virtually any substance, as long as moisture or water, oxygen, and an organic source are present. ToughRock® Mold-Guard™ Gypsum Board is designed to provide extra protection against mold and mildew compared to traditional paper-faced gypsum board products. Manufactured to meet ASTM C1396 Section 7 CSA-A82.27-M and Federal Specifications SS-L-30D, Type VII Grade W.
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