Hiring a Roofing Contractor: How to Evaluate, Compare, and Choose
Your roof is only as good as the crew that installs it. Premium materials installed poorly will fail in years rather than decades. The roofing industry has a high rate of fly-by-night operators, storm chasers, and unlicensed contractors who deliver substandard work and disappear when problems emerge. Finding a reputable contractor requires verifying credentials, comparing bids on an equal basis, checking references, and understanding what a professional contract should include. This guide gives you the tools to make a confident hiring decision.
Verifying Licenses and Insurance
Every roofing contractor should hold a valid contractor license in your state or municipality (requirements vary by location) and carry both general liability insurance ($1 million minimum) and workers compensation insurance. Ask for certificates of insurance and verify them directly with the insurance company, not just by looking at a document the contractor provides. A fake or expired certificate is worthless when a worker falls off your roof.
Workers compensation is particularly critical. If an uninsured worker is injured on your property, you can be held liable for their medical bills and lost wages. General liability protects you if the contractor damages your property, a neighbor property, or a vehicle during the project. Do not hire any contractor who cannot provide current proof of both coverages.
- Valid state or local contractor license
- General liability insurance: $1 million minimum
- Workers compensation insurance for all employees
- Verify directly with the issuing agency and insurer
Getting and Comparing Bids
Get at least three written bids for any roofing project over $5,000. A quality bid should itemize materials (brand, model, color), labor, tear-off and disposal, permits, and warranty terms. Vague bids with a single lump sum make comparison impossible and hide potential cost-cutting. If a contractor will not provide a detailed written bid, move on — they are either disorganized or deliberately obscuring what you are paying for.
Compare bids on equal terms. Ensure each contractor is bidding the same scope: same material grade, same underlayment, same flashing approach, same warranty. The cheapest bid is often cheapest because it uses lower-grade materials, skips ice and water shield, or does not include new flashing at penetrations. The most expensive bid is not automatically the best — it may simply have higher overhead. The middle bid with thorough documentation is often the best value.
Red Flags and Warning Signs
Storm chasers knock on your door after a hail storm offering free inspections and insurance claim assistance. While some are legitimate, many inflate claims, do poor work, and leave town before problems appear. Prefer local contractors with an established business address and multi-year track record in your area. Check with the BBB, Google reviews, and your state contractor licensing board for complaints.
Other red flags include demanding full payment upfront (standard is 10-33% deposit with the balance due on completion), pressure to sign immediately, no written contract, refusing to pull permits, and no physical business address. A legitimate roofing contractor has an office, a fleet, employees (not just subcontractors), and years of verifiable local references.
Understanding Roofing Warranties
Two warranties apply to a roofing project: the manufacturer material warranty and the contractor workmanship warranty. Material warranties cover defects in the shingles or panels themselves — typically 25-50 years for asphalt and 40-70 years for metal. Workmanship warranties cover installation errors — typically 2-10 years depending on the contractor, with better contractors offering 10+ years.
Manufacturer enhanced warranties (sometimes called system warranties) cover both materials and workmanship but require the contractor to be certified by the manufacturer and use all components from the same manufacturer system. These warranties are the most comprehensive and worth requesting. They typically add $200-$500 to the project cost for the certification and extended coverage.
The Contract: What to Include
A roofing contract should include the complete scope of work (materials, labor, tear-off, disposal, and flashing), start date and estimated completion date, total price with a payment schedule (deposit, progress payments if applicable, final payment on completion), warranty terms for both materials and workmanship, permit responsibility, and a clause for change orders (additional work discovered during the project at agreed-upon rates).
Ensure the contract specifies that the contractor is responsible for protecting landscaping, removing debris daily, and passing final building inspection. Add a clause that final payment is due only after inspection passes and you have done a walk-through. Never make final payment before inspecting the completed work from both ground level and (if safely possible) roof level or by reviewing contractor-provided photos of the finished roof.
Frequently Asked Questions
How much should I pay upfront for a roofing project?
Standard deposits are 10-33% of the total project cost, used to order materials. Never pay more than 50% before work begins. Final payment should be due only after the work is completed and inspected. Be wary of contractors who demand full payment before starting — this is the most common indicator of a scam or unreliable operator.
Should I get the cheapest or most expensive bid?
Neither, necessarily. Evaluate bids on scope, materials, and detail, not just price. The cheapest bid often cuts corners on materials, underlayment, or flashing. The most expensive bid may simply reflect higher overhead. Choose the bid that best balances quality materials, thorough scope, and reasonable price from a licensed, insured, well-reviewed contractor.
How long should a residential roof replacement take?
A standard single-family home with a simple roof profile takes 1-3 days for asphalt shingles and 3-5 days for metal. Complex roofs with multiple hips, dormers, and penetrations take longer. Weather delays are common. A realistic timeline for an average project is 2-4 days of actual work over a 1-2 week scheduling window.
Do I need a permit for a roof replacement?
Most jurisdictions require a building permit for a full roof replacement. Some areas also require permits for repairs exceeding a certain area or cost threshold. The contractor should pull the permit — if they suggest skipping it, that is a major red flag. Unpermitted work can cause problems with insurance claims, home sales, and building code compliance.