A pre-slope is necessary because once water has reached there, it needs to be directed to the drain area. If underneath your liner is flat – without any slope to the drain – this will cause water build-up, eventually causing mildew.

How do you shower with a Preslope?

If you are going to start with a preslope, here is the how-to.

  1. Start with a solid, clean and properly supported shower floor. …
  2. Gather your supplies.
  3. Mix 1 part Mortar to about 3 parts Sand Mix. …
  4. Shovel a few scoops of the mixture into the shower area and get to work. …
  5. Check your slope as you go.

Do you have to slope a shower floor?

Step 1: Floor Tile Must Slope to the Drain

In a stall shower, the plumbing code requires the floor to be sloped one quarter (1/4) of an inch per foot in order to carry the water effectively to the drain. This slope, according to the TCNA Handbook is called “sloped fill” or commonly known as the pre-slope.

What do you use for a Preslope shower?

Youtube quote:So what kind of material to use for the mouth I just usually quick pre sand topping mix strong enough it's actually richer than it really needs to be but it works fine for for shells showers.

What is the minimum slope for a shower floor?

4 percent

The minimum slope for a shower floor is 4 percent, which equates to a 1/2 inch drop from the shower walls to the drain. This slope is established in the pre-pan in traditional tile shower construction.

How do you slope a Curbless shower floor?

Slope of the shower floor

Sometimes less slope is specified in a curbless shower, such as 1/8” per foot. In some jurisdictions, a slope of 3/16” per foot or 1/8” per foot could be allowed for a roll-in shower designed to comply with the Americans With Disabilities Act (ADA).

How do you tile a shower floor with slope?

Youtube quote:The water just sits there and stagnates and causes discoloration. And the easiest way to slope that pan is to float a sloping mortar bed on the subfloor.

What fall should a wet room floor have?

Angle of the Wet-Room Floor (Slope to Falls)

The minimum recommended fall is 15mm and the maximum recommended ratio is 85:1, (i.e. for every 85mm the incline travels towards the waste outlet the floor level will fall 1mm.) It is imperative that the slope to falls is formed into the floor itself.

What is the recommended minimum slope to fall for a wet room?


Creating a gradient in a wet room is one of the three most important components of wet room construction, and is vital in order to guide water down the drain efficiently. The minimum recommended fall is 12mm, and the slope needs to be formed into the floor itself.

How much slope should a floor drain have?

The preferred slope is between one-quarter and one-eighth inch per running foot of floor length. As a rule of thumb, all areas around the drain should have a similar slope.

Is it normal for floors to slope?

Though floor sloping is a common problem, it isn’t purely a cosmetic problem. Floor sloping can indicate that there’s a much more severe issue at hand. Sloping floors can signify that there is significant structural damage to a home’s foundation, warped floor joists, or water damage requiring foundation repair.

How much fall do you need in a shower?

The recommended ratio of fall within showers is between 1:60 and 1:80. However, the ratios may not be achieved due to: (a) The size of the tiles used – falls become more difficult to achieve with larger tiles.

How do you slope a concrete bathroom floor?

Youtube quote:Empty the entire bucket. And continue spreading one bucket load at a time the shower floor can be floated up to three inches deep. Use. The last bucket full to tamp in set screens.

Can you slope a concrete slab?

How Much Slope? The standard slope for proper concrete drainage is a one-quarter inch drop for every foot of length. So, to calculate the difference in height between one end of a patio or walkway and another, simply multiply the length by one-quarter.