Leave a 1 4 inch gap between the backerboard and the wall.
Seal between hardibacker floor.
Apply some thinset to the gap.
You will also use it to attach the tile to the backer board.
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.
You need to make sure that the entire gap between the boards is filled up with the thinset.
Seal narrow cracks with paintable or clear latex caulk either at the top or along the bottom where the baseboards meet the floor.
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.
Whether you re laying down a new tile floor or installing a shower you may use a sheathing material such as backerboard.
Take a trowel or a taping knife and use it to apply the thinset to the gap.
Leave a 1 8 inch gap between each backerboard sheet.
Run a continuous bead of caulk along the gap and smooth it with a.
It is the material that you use underneath the backer board to attach it to the wood subfloor.
Thank you once again for your invaluable help.
I plan to run a bead of caulk silicone on the tub deck before putting the metal schluter strip in position.