Each ComfortGuard panel is composed of an enhanced mold- and water-resistant core with mold- and water-resistant facers on both sides. ComfortGuard features the TemShield Mold Protection system, which provides a significant degree of mold resistant compared to untreated panels.
ComfortGuard was tested for mold resistance per ASTM D3273*, the standard test of mold resistance, and scored a 10 out of a possible 10 in laboratory evaluations. Its resistance to water absorption was tested per ASTM C473.
Note: The ASTM D3273 lab test may not be applicable to the actual performance of building materials. No material may be labeled mold proof, and resistance to mold growth depends on many factors. Prolonged exposure to moisture may cause mold and mildew to grow on any surface. Therefore, in order to maximize the mold and mildew resistance of a material, it is essential that good design, handling and construction practices be implemented. This involves avoiding water exposure during all phases of storage, handling, shipping, installation and after installation is complete. See GA238 for more information.