Waterproofing

Contrary to popular belief, tile and grout joints (even sealed grout joints) are not waterproof, and a caulk or sealant joint alone between the tile and the tub will not ensure an overall waterproof assembly. It is essential to provide a waterproofing system beneath the tile to prevent moisture and vapor from penetrating the walls and consequently increasing the potential for mold and damage to the structure.

Today’s construction methods, which include the use of lightweight, moisture-sensitive materials, such as plywood, OSB, and gypsum concrete, have made the installation of hard-surface-coverings (example: ceramic tile) particularly challenging. If wood or gypsum concrete substrates are exposed to moisture, the tile layer above can be damaged as a result.

Typical areas that require waterproofing include tub surrounds and showers. However, there are other commonly tiled areas that may, through unexpected circumstances, become exposed to significant amounts of water; for example, an overflowed toilet, or ruptured dishwasher, icemaker, or washing machine lines, which can result in flooding. Waterproofing these floors can save an owner from replacing the tile assembly and substructure in the event of a leak.

Schluter®-DITRA installations can be made waterproof with minimal effort. Since the matting is made of waterproof polyethylene, the only extra step necessary is to seal the DITRA seams and floor/wall connections. This is easily accomplished by applying Schluter®-KERDI-BAND to these areas, using an unmodified thin-set mortar. The result is a waterproof installation that will not suffer damage in the event of an unexpected water leak.

Schluter®-DITRA meets the requirements of the American National Standard for Load Bearing, Bonded, Waterproof Membranes for Thin-Set Ceramic Tile and Dimension Stone Installations.

At Shenandoah Floor To Ceiling® we use Schluter® Systems for waterproof and vapor management in ceramic tile showers and we are an AUTHORIZED DEALER of Schluter® Systems.

For further information, go to www.schluter.com

Visit our Installation Page for a detailed view of the shower waterproofing installation.

Essential Water Management
KERDI DRAINS