Seal Between Hardibacker Floor

You will also use it to attach the tile to the backer board.

Seal between hardibacker floor. Apply some thinset to the gap. Mix thin set mortar according to the manufacturer s instructions and apply a thin coat over the fiberglass tape with a drywall knife. The corners and edges of the sheets should not touch one another. Backer board by strip of ditra underlayment mesh tape joining strip of underlayment to backer board thinset kerdiband more thinset leg of shiene tile edging thinset and finally tiles.

Leave a 1 8 inch gap between each backerboard sheet. Leave a 1 4 inch gap between the backerboard and the wall. Thank you once again for your invaluable help. Although most backerboards currently available won t fall apart when exposed to moisture and are somewhat water resistant they aren t waterproof.

Seal narrow cracks with paintable or clear latex caulk either at the top or along the bottom where the baseboards meet the floor. I plan to run a bead of caulk silicone on the tub deck before putting the metal schluter strip in position. You need to make sure that the entire gap between the boards is filled up with the thinset. Take a trowel or a taping knife and use it to apply the thinset to the gap.

Run a continuous bead of caulk along the gap and smooth it with a. Run the drywall knife over the mortar to create a smooth finish and remove any excess material.