Estimate sand, cement, volume & cost instantly
Use this deck mud calculator to estimate dry pack mortar for shower pans, tile beds, and sloped floors. Includes sand/cement breakdown and waste factor.
Enter your shower or floor dimensions, drain thickness, and slope (typically 1/4" per foot) to calculate the total deck mud needed, including sand and cement breakdown. The calculator also adds a waste factor and estimates how many 80 lb bags you’ll need for the job.
4×3 shower, 1.5" drain depth, 1/4" slope ≈ ~2.2 ft³ of deck mud.
What is deck mud?
Dry pack mortar used for tile bases and shower pans.
What slope should I use?
1/4 inch per foot toward the drain.