New ASTM Ratings for Foam Backerboards!
On November 30th, 2023, ANSI A118.18 was approved as a standard for foam core backer boards including KERDI-Board. This Standard will be published in the 2024 book of ANSI Standards for Ceramic Tile installation. ANSI A118.18 for foam boards contains the following requirements: Provided that all requirements of the Schluter System Installation Hanbook and the Schluter KERDI-Board Data Sheet are met, KERDI-Board is a suitable replacement for glass mat gypsum backing panels (ASTM C1178), fiber-reinforced gypsum panels (ASTM C1278), non-asbestos fiber-cement backer boards (ASTM C1288 or ISO 8336, Category C), and non-asbestos fiber mat reinforced cementitious backer units (ASTM C1325) when used as a backer for wall tile in wet areas. Please reach Chris Hill via email for further insight and information regarding this new and exciting development.