Roofing calculator
Squares, shingle bundles, and underlayment based on roof dimensions.
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Roofing and siding calculators
Estimate materials for roofing and exterior siding projects. Choose a calculator below.
Planning an Exterior Project
Exterior projects depend heavily on weather. Plan roofing and siding work for dry seasons with moderate temperatures. Shingles need warm conditions (above 40°F) for the adhesive strips to seal properly. Siding installation also goes faster in moderate weather — vinyl siding can become brittle in cold temperatures and may crack during handling.
Order materials well in advance. Roofing and siding materials often have lead times of 1-3 weeks. Measure carefully and order 10-15% extra for waste, starter strips, and trim pieces. Consider matching your roofing and siding choices to your climate — fiber cement siding excels in humid regions, while metal roofing sheds snow effectively in cold climates.
Roofing and Siding Guide
Roofing materials range from economical 3-tab shingles to premium architectural shingles that offer better durability and curb appeal. Siding choices include vinyl (low maintenance), fiber cement (fire resistant and long lasting), and wood (natural appearance). Your choice depends on climate, budget, and desired maintenance level. Use our calculators to estimate roofing squares, shingle bundles, and siding pieces for your exterior project.
Installation Tips
- Always install drip edge and underlayment before shingles
- Use the right nail length for your shingle type
- Allow siding to acclimate for 48 hours before installation
- Leave expansion gaps in siding for temperature changes