How to Quote a Roofing Job (and Make Money on It)

Roofing is priced per 'square' (100 sq ft of roof). For asphalt shingle replacement, expect $350-$550 per square installed in 2026 (materials + labour), plus tear-off ($100-$150/sq), dump fees ($400-$1,200), and permit costs. This guide covers measuring with pitch correction, itemising materials and labour, sample quote breakdowns, deck-damage language, and the common mistakes that cost roofers their margin.

Frequently Asked Questions

What's the average cost to replace a roof in 2026?

For an average 2,000 sq ft home (about 25 squares), expect $14,000-$22,000 for an architectural asphalt shingle replacement, fully installed.

How long should a roofing quote be valid?

Most contractors use 14-30 days. For longer validity, include a material escalation clause that lets you re-price if supplier costs rise more than a stated percentage.

Should I include the deck inspection in the roofing quote?

Yes — itemise it as part of tear-off. Most quotes include 'replacement of up to X sheets of damaged decking' in the base price, with a stated per-sheet rate for additional sheets.

What's the difference between manufacturer warranty and workmanship warranty?

Manufacturer warranty covers the shingles themselves (25-50 years from the manufacturer). Workmanship warranty covers your install (10-25 years from the contractor). Both should appear on the quote separately.

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