Tar paper protects your subfloor if water ever gets underneath your shower pan.
Making a concrete shower floor.
Secure a layer of tar paper to the floor to block moisture.
The shower walls and ceiling are precast 1 inch thick polished concrete panels.
Lay a large sheet of tar paper on the entire floor of your shower pan and smooth it out as flat as possible.
Leave the mortar to cure.
How to create a stained concrete shower floor.
Diy step by step instructions on how to build a mortar shower pan.
Concrete may seem like an odd material to use in a bathroom but it has several qualities that make it an appealing choice.
Using concrete mix create a 1 4 per foot slope to the shower drain.
Pre slope is required in order to allow water collected on the shower membrane to drain into the weep holes of your shower drain assembly.
Drive a nail into the floor every 8 12 inches 20 30 cm so the tar paper stays in place.
Mix in water and more concrete mix following the manufacturer s instructions until the result is the consistency of a milkshake.
Use a spade handle drill which works like a giant hand mixer.
Typical slope for a shower floor is 1 8 to 3 16 inch per foot across.
Remember tile and mortar are not waterproof.
Water and water damage.