For the floor of your shower or shower pan there are two basic options.
How to install a shower pan over a wooden floor.
Paint over the entire pan including corners nooks and the perimeter with a liquid waterproofing product.
Then attach the pan to the surrounding studs using screws and washers that are overlapping the lip of the pan.
What do you do.
Typically i go with 2x10 s to ensure i have the backing to allow the membrane to rise 9 1 2 up to the wall.
Easy by brewing up a nice hot cup of joe and w.
If the water is still at the same height the next day your shower pan over the wooden floor is waterproof.
Next seal the edges of the pan and any holes with silicone bath caulk.
Install backing around the bottom of the shower stall.
Wait three days for the mud to dry and cure before waterproofing it.
A curb design which is the one you must step over as you enter the shower or a curb less design where the shower and the surrounding bathroom floor are at the same level.
Time to replace that old nasty shower.
Part 1 of new bathroom project.
Pre drill holes through the shower pan rim at the marked locations.
Allow this to dry overnight.
Then you ll need a new shower pan.
Seal them with another coat of thinset.
Test fit the shower pan to confirm the drain opening fits over the drain hole in the floor.
Plug the drain and fill it with two inches of water.
Where do you start.
Allow it to set overnight.
It s now ready for finishing touches like ceramic tile.
Use the level to make sure all sides of the pan slope toward the drain.
You will later screw the shower pan into the wall studs.
Pour mud into the shower pan mixing it with a trowel as you go to get rid of air bubbles.
Mark the outline of the shower pan on the subfloor using pencil or a chalk line.
This how to video shows tile board going down onto timber floor and the shower floor drain grates.
In the above image you will see 2x6 pieces fastened in between the studs around the entire perimeter of the shower pan.