wedi Building Panels are excelllent underlayments for tile over interior wood subfloors. When applied over wood sub-floors – wedi Building Panels act as a waterproof membrane and offer a superior bonding surface for tile. Additionally,the thermal insulating qualities of the panels support installations including floor warming systems under the tile cov-ering. The cleanliness of cutting and installing wedi building panels make especially renovating a great experience. Crisp cuts around installations or obstacles provide for full surface tile support even in underlayment edge areas andtricky spots. When used for waterproofing the exact cut outs and perfect joint alignment provide tight and closed waterproofed surfaces.
All wedi Building Panel sizes and thicknesses can be used as tile underlayments over wood subfloors. A modified thinset mortar is applied to the floor with a 1/4” x 1/4” V- or U-notch trowel to provide a ribbed bed. The wedi Building Panels are then laid into the mortar. All joints should be staggered so that no seam continues throughout the length of the floor. wedi fasteners, in this application tabless washers and wood screws, are applied every 1 ft into seams to create flush transitions between panels making use of the wedi washer and are generally set at a rate of 1 fastener per 1 square foot across the panel surface. All seams should be taped with wedi alkali resistant mesh tape in dry areas or with wedi Sealing Tape or wedi Joint Sealant in wet areas. Fastener points are waterproofed using wedi Joint Sealant before tiling begins once the thinset mortar has set up below the wedi panels. Use weights over wedi panels and especially across panel transitions to ensure full bond and smooth transitions.
Step 1Simply spread modified thinset mortar over a clean wood subfloor using a 1/4" x 1/4" notch trowel provided the subfloor is even and loadbearing.
Step 2Apply the Building Panel by laying the panels into the mortar. Stagger all panel joints.
Step 3Fasten with wedi fasteners. Use wedi tabless washers and wood screws.
Step 4Tape all joints with wedi fiberglass mesh tape in dry areas or wedi Waterproof Sealing Tape or wedi Joint Sealant in wet areas. Fastener locations should be waterproofed too using wedi Joint Sealant. Begin tiling!