Code Compliance / Product Standards:
GreenGlass is IRC and IBC code compliant in 1⁄4" (6.4 mm), 1⁄2" (12.7 mm) and 5⁄8" (15.9 mm) thicknesses and meets ASTM C1178 and appropriate sections of ASTM C1658 and ASTM C1396 as a fiberglass
mat water-resistant gypsum substrate for use as a tile backer, as recognized by the Tile Council of North America (TCNA).
Installation Standards:
GreenGlass must be installed in accordance with ASTM C840 and/or Gypsum Association publication GA 216.
For tile installation, refer to the Tile Council of North America’s TCA Handbook for Ceramic Tile Installation or ANSI’s American National Standard Specifications for the Installation of Ceramic Tile, ANSI A 108.4 or ANSI A 108.5.
Mold and Moisture Resistance:
Produced with the TemShield Mold Protection System engineered into its gypsum core, GreenGlass tile backer is faced on both sides with naturally mold-resistant fiberglass mats. It scored a 10, the highest possible value, when tested in accordance with ASTM D3273, the standard test for mold resistance.
In addition, the water-resistant core of GreenGlass combined with its acrylic surface coating is designed to dramatically reduce wicking and moisture pass-through compared to cement-based backer panels. Moisture is stopped at the surface to resist buildup and damage within the wall cavity. Its water absorption of ≤5% was tested in accordance with ASTM C473.
In fact, thanks to its bonded acrylic-coated surface that acts as a built-in moisture barrier, the Tile Council of North America does not require the installation of a separate water-proof membrane behind GreenGlass as it does when cement backer boards are specified for wet area tile application.
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 GA-238 for more information.
Tile Bond Testing:
GreenGlass passed ceramic tile bond-strength testing conducted by the Tile Institute of America according to test standards ASTM C482 and ANSI A 137.1. Tests were performed on tile attached to a GreenGlass substrate using dry set (ANSI A 118.1) and polymer-modified (ANSI A 118.4) mortar to verify compliance with the Uniform Building Code.
Installation:
Before installing GreenGlass tile backer, read cautions regarding handling and required hygiene.
Available in 1⁄4" (6.4 mm), 1⁄2" (12.7 mm) and 5⁄8" (15.9 mm) thicknesses, GreenGlass tile backer is approved for use in a variety of applications where it provides excellent dimensional stability and strength.
When used as a tile substrate, GreenGlass panels should always be installed so that the tile can be applied to its gray facer.
Refer to our installation instructions for detailed information and diagrams.
Gypsum Association Architectural Resources:
Click the link below for a library of PDF documents produced by the Gypsum Association, covering information on subjects like selection, handling, application, finishing and repair of gypsum board products.
