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What is a Roof Shingle Calculator?
A Roof Shingle Calculator estimates the number of shingles required for a roof based on its dimensions and pitch, along with an approximate cost for materials.
Roof pitch increases the actual surface area, and shingle types have different coverage rates. This calculator includes a 10% waste factor and uses standard coverage (e.g., 3 bundles per 100 sq ft for asphalt shingles) for estimates.
3-Tab Asphalt vs. Architectural Shingles vs. Composite Shingles
| Shingle Type | Coverage (sq ft/bundle) | Cost ($/sq ft) | Durability |
|---|---|---|---|
| 3-Tab Asphalt | 33.3 | 0.8-1.5 | 20-25 years |
| Architectural | 33.3 | 1.2-2.0 | 25-30 years |
| Composite | 33.3 | 2.0-3.5 | 30-50 years |
How to Use the Roof Shingle Calculator
- Roof Area Dimensions: Enter the length and width of the roof area.
- Pitch: Input the roof pitch (e.g., 4/12 for a 4:12 slope).
- Shingle Type: Select the type of shingles (e.g., 3-tab asphalt, architectural).
- Unit: Choose the unit of measurement (feet or meters).
- Calculate: Determine the number of shingles and estimated cost.
Frequently Asked Questions (FAQ)
Does the calculator account for roof complexity?
The calculator assumes a simple roof. For complex roofs with dormers or valleys, add 15-20% more material or measure each section separately.
What is included in the cost estimate?
The cost estimate includes shingle material costs only, based on average market prices. Labor, underlayment, or accessories are not included.