Install the liner over a pre sloped bed as i explain here.
Making a sloped shower floor.
From the floor drain.
Sticks measure 1 8 in.
A setting or mortar bed is recommended under the entire shower area and must be sufficiently deep so it may be sloped to the drain.
This is just a sheet of plastic or tar paper stapled to your wood floor first with the lathe placed over it.
No matter what the building inspector says it s not a good idea to install a pan liner and then a single sloped mortar bed over it.
Water that gets into the mortar bed won t be able to drain out.
For standard shower sub floor areas with a centered drain or custom shower areas where the drain is within 36 in.
The top of the drain must be set below the subfloor of the room.
1 measure from the drain opening to the furthest wall then round up to the nearest foot.
Shovel it into the shower stall working it with your trowel as you do.
When working with the wet concrete strike it gently with the flat side of the trowel to help bring the moisture to the surface and smooth out the concrete.
The membrane does not make anything waterproof.
Reinforce the shower pan.
Make the cement about a half inch deep around the drain assembly.
On wood you can use regular metal lathe.
You need to first make sure your shower floor will stay where you put it.
I used an unbonded mortar bed so i have a tar.
Calculate the slope by multiplying the measurement by 1 4 inch.
Mix the cement in the wheelbarrow.
Usually this requires that the floor is recessed between 1 to 2 for the minimum size.
Shower floor slope to efficiently drain the recommended minimum slope for a shower floor is about 4 percent or a 1 2 inch drop per every 12 inches from the shower walls to the drain.
Taper x 36 in.
Make your diy shower tile experience easier with these pro tips from the tile shop.
The height of the concrete should gently slope from 2 1 2 around the outside of the form to 1 1 4 near the drain.
You need to place what is called a cleavage membrane beneath your lathe.
Before tiling a shower be sure the drain and sub floor are properly seal.