Metal Roof Calculator
Calculate metal roofing panels, screws, underlayment, and trim needed for your project. Estimate costs and materials for residential and commercial roofs.
Step 1: Roof Dimensions
Roof Area Calculation
Metal roof panels are typically 3 feet wide and come in lengths from 8 to 40 feet. The calculator accounts for roof pitch and overlap between panels.
Step 2: Materials & Cost
Material Estimates
Underlayment: ~1 roll per 200 sq ft. Screws: ~100 per panel. Trim: ~1 linear foot per 2 sq ft of roof. Ridge cap: length of roof ridge.
Metal Roof Materials Estimate
Total Estimated Cost
Complete Materials List
| Material | Quantity | Unit Price | Total Cost | Notes |
|---|
Cost Breakdown by Material
Metal Roof Calculation Formula
Panels = (Roof Area ÷ Panel Coverage) × (1 + Waste%)
Calculate roof area adjusting for pitch, divide by panel coverage (allowing for side laps), then add waste factor. Underlayment: 1 roll per 200 sq ft. Screws: 100 per panel.
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