How to Compare Roofing Quotes

The 5-Step Quote Comparison Method

Follow these steps every time you sit down with two or more roofing proposals.

1. Step 1 — Normalize the scope. Before you compare totals, make sure every quote covers the same work. If Quote A includes tear-off of two layers and Quote B assumes one layer, the prices are not comparable. List every major scope item (tear-off, underlayment, flashing, ventilation, disposal) and confirm each quote addresses it.
2. Step 2 — Calculate cost per square foot. Divide the total price by the roof area in square feet. This gives you a single number you can compare across bids regardless of how each contractor formats the estimate. For a typical architectural-shingle replacement in 2026, expect roughly $4.50–$8.00 per square foot installed.
3. Step 3 — Compare warranty terms. A workmanship warranty covers the contractor’s labor. A manufacturer warranty covers defective shingles. Check both durations and whether the manufacturer warranty is a standard limited warranty or an enhanced system warranty that requires certified installation.
4. Step 4 — Verify inclusions and exclusions. Read the fine print for items like drip edge, ice-and-water shield, pipe boots, chimney flashing, skylight flashing, and decking repair allowances. A quote that omits these may look cheaper but will generate add-on charges on the day of installation.
5. Step 5 — Run the numbers through Woogoro. Upload or enter each quote into the Roofing Quote Analyzer to see how each bid compares against local market data for your ZIP code, roof size, and material type.

Common Tricks That Make One Quote Look Cheaper

Most contractors are honest, but budget-focused bids sometimes achieve a lower number by leaving work out rather than doing it for less. Watch for these tactics:

• Missing tear-off. The quote says “install new roof” but never mentions removing the old layer. A single-layer tear-off adds $1.00–$1.50 per square foot, and skipping it can void the manufacturer warranty.
• Excluded disposal fees. Dumpster rental and disposal can run $400–$800. If the quote says “disposal not included,” that cost still lands on you.
• Thinner underlayment. Synthetic underlayment costs more than 15-lb felt but lasts longer and provides better moisture protection. A quote that uses felt to save money may compromise roof longevity.
• No flashing detail. Flashing around chimneys, walls, valleys, and vents is where leaks start. If the quote simply says “flash as needed” without specifying step flashing, counter flashing, or valley metal, expect change orders or shortcuts.
• Omitted ventilation. Proper intake and exhaust ventilation protects shingle life and prevents ice dams. Quotes that skip ridge vent or soffit vent work may save $300–$600 upfront but cost thousands in premature failure.

What to Ask Every Contractor

Before signing, ask these six questions and note the answers directly on each proposal.

1. “What is the full tear-off scope?” — Confirm whether they are removing one or two existing layers down to bare decking, and whether that price is included or itemized separately.
2. “What underlayment are you installing?” — Ask for the product name (e.g., GAF FeltBuster, CertainTeed DiamondDeck). This tells you whether it is felt or synthetic and lets you compare across bids.
3. “How do you handle rotten decking?” — Good contractors specify a per-sheet price for OSB or plywood replacement. Vague quotes may charge whatever they want once decking is exposed.
4. “Is flashing replaced or reused?” — Reusing old flashing saves a few hundred dollars but is one of the leading causes of post-replacement leaks. New step flashing and drip edge should be standard.
5. “What warranties apply?” — Get the workmanship warranty duration in writing. Also ask whether the installation qualifies for an enhanced manufacturer warranty, which can extend coverage from 25 years to 50 years or a lifetime.
6. “Are permits and inspections included?” — In most municipalities a roof replacement requires a building permit. If the contractor does not pull one, you have no code inspection and your insurance may not cover future claims.

Red Flags in Roofing Quotes

• Vague scope language. Phrases like “roof as discussed” or “standard installation” without listing specific materials, quantities, or methods should make you ask for a rewrite.
• Verbal-only promises. If a contractor says “we always replace flashing” but the written quote does not mention it, the written document is what counts if there is a dispute.
• High-pressure tactics. A “sign today” discount that expires tomorrow is a sales technique, not a genuine savings. Reputable contractors will honor a quote for at least 30 days.
• No business address or license number. Every legitimate roofing contractor should provide a physical business address, state license number, and proof of insurance on the quote itself.

Side-by-Side Comparison Checklist

Print this table and fill in the details from each proposal to see where bids differ.

Frequently Asked Questions