Your finished floor (after your liner and top mud bed are installed) needs to be 1″ to 1 1/4″ thick at the drain. So, if we make the pre-slope 3/4″ thick at the drain it needs to be a total of 1 1/2 inch thick at all your walls. So mark a line 1 1/2″ from the floor all the way around the wall studs.
If you are using a preformed shower pan, the manufacturer of the pan should provide instructions as to how thick the mortar bed needs to be. If you are installing tile, the mortar bed should be 2-3 inches thick on the outer edge and slightly less at the drain.
Thereof, What do you use to pre slope a shower?
Also to know is, How do you calculate the slope of a shower? With a tape measure, determine the distance between the drain and the farthest corner of the shower. As seen in the photo below, this distance is 26″. Divide that distance in feet (inches divided by 12) by four to find how much slope you need.
Subsequently, question is, How much should a shower floor slope? 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. In traditional tile shower construction, this slope is established in the mortar pre-pan.
Also, How long does pre slope take to dry?
24 hours
What is a mud set shower?
Mud, or dry pack mortar, is a mixture of clean sand, Portland cement and water. For a shower base, combine five parts sand to one part Portland cement. … The remainder of the shower base is filled with dry pack mortar that is tamped and sloped using the perimeter screed and drain as guides.
How much slope should a curbless shower have?
Slope of the shower floor The International Plumbing Code (IPC) requires a slope of 1/4” per foot (IPC 417.5. 2 Shower Lining) for shower floors, which is echoed in the TCNA Handbook shower receptor methods.
How long should deck mud dry before tiling?
Curing should start as soon as possible and should continue for a period of 5 days in warm weather at minimum 70oF (21oC) or higher, or for 7 days in colder weather at 50 – 70oF (10 – 21oC). Protect Deck Mud from freezing during the first 48 hours.
What kind of shower do you use for a mud bed?
Mix Dry Deck Mud Using bagged sand mix from your home center (or 4 parts sand, 1 part portland cement), mix up a batch of dry deck mud with latex additive (not water). Mix the mortar in a wheelbarrow (not a bucket).
How do you find the slope in a shower?
1) Measure from the drain opening to the furthest wall, then round up to the nearest foot. Calculate the slope by multiplying the measurement by 1/4 inch. For instance, if the drain opening measures 2-foot 8-inches from the furthest wall, then the shower floor should slope 3/4 inch from that wall to the drain.
How much space is needed for a curbless shower?
NC State University says that most national codes permit curbless showers as shallow as 30 inches by 60 inches; however they suggest a minimum depth of 36 inches. A shower that is 5 feet by 5 feet will allow sufficient space for both the wheelchair user and an aide.
Is a shower pre slope necessary?
One of the most important preparation steps is to pre-slope a shower. … 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 long does dry pack take to cure?
Allow to dry overnight. Do not permit any weight over 200 lbs. for 72 hours on the floor. The mixture cures with time so the dry pack only gets drier as time passes.
Do you need a pre slope in a shower?
No. I’ve installed a number of showers. There is no such thing as a ‘single step’ process. If you don’t have a pre-slope, or use something like Schluter’s drain pans (which is what I always use now), the water will pool and just sit there which will cause bacteria growth, possibly mold, etc.
How long does it take for dry pack to cure?
28 days
What is a shower pre slope?
A pre slope is installed under the shower pan liner and over the shower base floor, which is pitched so that any water that manages to get into the shower base may be directed to the weep holes in the drain and out of the liner.
How thick can dry pack be?
Place and pack the mortar in layers to a compacted thickness of about 3/8 inch.
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