ClutchCalcs

Construction

Shower Pan Mortar Calculator

Deck mud (4 parts sand to 1 part portland) for a shower pan slope. Quantity by pan size + slope thickness.

Bags of deck mud (80 lb)

Volume (cu ft)
Sand bags (60 lb)
Portland bags (94 lb)

FAQ

Why a sloped pre-slope? +
Water that gets through the tile drains over the waterproof membrane toward the weep holes. Without slope, it pools and rots out the framing.
Pre-mixed deck mud bags? +
Quikrete and Sakrete sell pre-blended deck mud. A bit more expensive than mixing your own but no ratio guessing.