The mortar permanently binds the tiles to an underlayment which is in turn.
Ceramic tile underlay adhesive.
Then mark that distance out from the 3mm mark on your underlay.
You can install the dimension stone as well with the underlayment.
The key benefit of this underlayment is that this is waterproof.
Exterior plywood is an acceptable underlayment for tile and is preferred to interior grade plywoods because the bonding adhesives used are waterproof.
Measure the width of the doorway and halve it.
You need fewer worries about the penetration or leaking of water in your home.
If water seeps through the tile installation to the underlayment it will not cause the wood to swell as happens with interior grade plywood.
I should add this is not what i would call a hardwood floor quite soft and a bit squeaky.
This schluter ditra 1 8 underlayment 323sqft is perfect for ceramic tile.
Hi people bit confused on one thing do i use stud adhesive under the tile underlay then nail or just straight out nail this is over floorboards.
Then mark 3mm in from the edge of the doorway.
Draw an arrow onto the underlay to show the direction you need to cut either left or right of the doorway.
That means that installation simply requires peeling off a protective paper layer to reveal adhesive already in place.
The tile is then pressed into place without the requirement of any additional adhesive.