Vacuum the subfloor and check the level.
How to install a shower base on a timber floor.
You need to notch the corners for a two inch overlap.
Use a wide blade putty knife or a paint scraping tool to peel off old caulking and adhesive.
Check local building codes for the correct concrete depth and the required size and thickness for the rubber membrane.
Place cardboard or another material into the shower pan base to protect its surface.
Drill screws into the bare floor between the inner and outer curb edges every foot or so and at every joint.
Clear all debris and old adhesive from the surface.
Mix the mud according to manufacturer instructions.
Place the shower pan onto the mortar making sure the pre drilled holes on its rim line up with the wall studs.
Press the fabric into place with the trowel on both the pan and the wall.
Chisel away any flooring that would be under the pan before attaching the drain hole s strainer.
Mixing pouring the pan.
This will later help join the curb to the floor.
Make any additional surface preparations that are recommended by the shower pan manufacturer as necessary such as applying a fresh coat of a water seal product to the.
Pour it into the curb frame until the mud reaches the top of the wood frame making the top as level as you can.
Prepare the area for installation.
Use fabric strips to build the shower pan waterproofing.
Use a broom or a vacuum to clear loose debris.
Lay down cardboard to protect the fabric as you do the wall to floor connections.
Put the thinset on the floor and wall focusing on the inside edge.
The shower in this project will be flush with the side of the whirlpool bath so the frame needed to extend under the tub overhang.