How accurate are the material takeoff and cost calculations?

Calculations are grounded in industry-standard engineering formulas (such as compacted density multipliers, ASTM standards, and CSI MasterFormat divisions), with customizable local material unit costs and compaction waste factors.

What waste allowance factor should be added to material orders?

For commercial and residential trade installations, standard engineering practice recommends including a 5% to 10% material waste and compaction contingency factor.

Can I export these takeoff sheets for client bidding?

Yes, you can export full itemized material schedules and bid breakdowns directly to CSV or printable takeoff summaries.

Professional Roofing Estimation Engine

Roofing Estimate & Shingle Square Calculator

Accurately calculate true roof surface area from ground dimensions using pitch slope multipliers, determine roofing squares (100 sq ft = 1 square), bundles, and contractor job profit.

Roof Footprint & Pitch Inputs

Base Home Ground Footprint (sq ft)

Roof Pitch / Slope

Waste Factor (%) (Valleys, hips, ridges)

Cost per Square Installed ($ / sq)

Material & Bid Breakdown

True Roof Surface Area: 2,236 sq ft

Roofing Squares (incl. waste): 25.0 Squares

Shingle Bundles (3 bundles/square): 75 Bundles

Underlayment Rolls (400 sq ft/roll): 7 Rolls

Estimated Total Job Price: $11,250

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