Shower Pan Slope Calculator - Free Calculator

Calculate proper shower pan slope and mortar needed. Get accurate estimates for your home improvement project.

Calculator Inputs

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How to Use This Calculator

Enter shower dimensions and select drain location (center or corner). Calculator determines proper slope and mortar needed for code-compliant drainage.

Why Accurate Shower Pan Slope Matters

Minimum 1/4" per foot slope is required by code for proper drainage. Insufficient slope causes standing water, mold, and soap scum buildup. Proper calculation ensures water flows to drain.

Common Mistakes to Avoid

Insufficient slope causing pooling, uneven slope creating low spots, not compacting mortar properly, installing liner before slope, and forgetting to check with level.

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