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.
Shower pan liner on concrete floor.
It s not a flawed system as mentioned i do not use this type of shower pan system but many guys still do.
This method can be used to build a pre slope or pre pitch for a vinyl liner or the base for a sc.
Remember tile and mortar are not waterproof.
Using concrete mix create a 1 4 per foot slope to the shower drain.
4 the pitch for the shower floor is created with the preslope and the secondary mortar bed is all a uniform thickness.
Since they need to be waterproof most shower pan liners are made from pvc or poly vinyl chloride which is nothing but a type of plastic sheet in simple language.
This can be done by a handiman or diy.
Instructional video on installing a pvc pan liner for a tiled shower pan.
How to install mud in a shower pan for a tile shower stall.
Ply can be 30 mm or 40 mm thick.
In the absence of a pre slope below the shower pan the pan will be flat on the floor surface keeping any of that water in the concrete from percolating down and into the weep holes of the shower drain.
Leave the mortar to.
Pour a layer of mortar over top of the shower membrane and form the slope down towards the drain hole.
It is very important to follow all steps as.
Step by step process on how to install pvc pan liner for any shower and yes you need one on a slab application so this would apply to those showers too.
A real wrestling match but we got er done.
Typical slope for a shower floor is 1 8 to 3 16 inch per foot across.
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