Roofing Cost Calculator

▢ Roof Area

1,800sq ft

500 sq ft5,000 sq ft

Or calculate from home footprint:

Home sq ft:

▲ Roof Pitch

Flat 0-1/12

Low 3/12

Medium 6/12

Steep 9/12

Very Steep 12/12

■ Roofing Material

3-Tab Asphalt $3.50/sq ft

Architectural $4.50/sq ft

Metal Standing Seam $10/sq ft

Metal Panels $7.50/sq ft

Clay Tile $12/sq ft

Concrete Tile $9/sq ft

Slate $18/sq ft

Wood Shake $8.50/sq ft

⇱ Stories

1 Story

2 Stories

3+ Stories

⚠ Tear-Off Layers

1 Layer

2 Layers

New Decking

⚙ Roof Complexity

Simple

Moderate

Complex

☍ Region

◆ Your Roofing Estimate

Material Cost$0

Labor Cost$0

Tear-Off & Disposal$0

Underlayment & Accessories$0

TOTAL PROJECT0%

Total Estimate $0

Cost Per Square (100 sq ft)

Cost Per Sq Ft

Material Comparison

Material	Lifespan	Warranty	Est. Cost

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Roof Area

If you know your actual roof area, enter it directly. Otherwise, enter your home's footprint square footage and we multiply by a pitch factor (1.0x for flat up to 1.7x for 12/12 pitch) to estimate the true roof surface area.

Material Costs

Material pricing is based on national average contractor pricing per square foot, updated quarterly. We include the primary roofing material, ridge caps, starter strips, and standard accessories.

Labor Rates

Labor is calculated as a percentage of material cost, adjusted by roof pitch (steeper = more expensive), number of stories (higher = more labor), and complexity (dormers, valleys, and penetrations add time).

Tear-Off Costs

Removing one layer of old shingles runs about $1.20/sq ft. Two layers cost about $2.00/sq ft due to extra weight and disposal fees. If new decking is needed, costs jump to around $3.50/sq ft including plywood and labor.

Regional Adjustment

We apply regional labor cost multipliers based on the Bureau of Labor Statistics construction wage data. West Coast and Northeast regions typically run 15-28% above the national median.