Calculator Inputs
ft
ft
ft
%
$
Results
1,344.00 sq ft
Footprint Area
1,502.64 sq ft
Roof Area (actual)
1,728.03 sq ft
With Waste
18 squares
Roofing Squares
54 bundles
Shingle Bundles
5 rolls
Underlayment Rolls
$2,160.00
Material Cost
About This Calculator
Estimate roofing materials for a gable roof. This includes shingles, underlayment, and accounts for roof pitch and waste. For complex roofs (hip, valley, dormers), add 10-15% more to the waste factor.
Roofing Math
- 1 square = 100 sq ft of roof area
- 3 bundles = 1 square (standard 3-tab shingles)
- Pitch factor adjusts flat footprint to actual sloped area
- Waste: 10% simple gable, 15% moderate, 20%+ complex
Frequently Asked Questions
How many squares of shingles for a 2000 sq ft house?
For a 2000 sq ft footprint with a 6/12 pitch, you need approximately 24 squares of shingles (including 15% waste). This assumes a simple gable roof.
What does 'roof pitch' mean?
Roof pitch is the slope expressed as rise over run. 6/12 means the roof rises 6 inches for every 12 inches of horizontal run. Higher pitches = more roof area and higher material costs.