Shower Pan Slope
In a stall shower the plumbing code requires the floor be sloped one quarter 1 4 of an inch per foot in order to carry the water effectively to the drain.
Shower pan slope. If you are going to start with a preslope here is the how to. It will set the proper negative slope for each layer that will sit able it. Pre slope the pre slope sits on top of the subfloor and it is the start of your shower pans moisture management. The function of the slope in a wet area pan is to motivate all water towards the drain under the tile and thin set is a inclined mortar base that creates the incline for you to lay your tile.
And be sure to tackle all of the prep steps first. The sloped fill slants from the drain toward the perimeter of the shower with a slope of 1 4 in. Using a wood float trowel level and a stick of lattice i show the proper way to obtain the 1 4 per foot of slope required for. Mix 1 part mortar to about 3 parts sand mix.
This slope according to the tcna handbook is called sloped fill or commonly known as the pre slope. This is where i failed miserably the first. Since our shower had an average width of 3 ft we sloped up from the 1 4 in. Start with a solid clean and properly supported shower floor.
Thickness around the shower walls and curb to get the necessary 3 4 in. I will show you in this video a step by step process how to do it. 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. Thickness of the drain to a 1 in.
In traditional tile shower. Sower pan pre slope under the shower pan liner is an crucial part of a successful tile shower installation. Under that incline is the pvc liner which is on top of your preincline. This sloped material is installed under the pan liner waterproofing membrane.