Questions to Ask a Roofing Contractor

Hiring a roofer is one of the most consequential decisions a homeowner makes. Your roof protects everything under it, and a bad installation can mean leaks, voided warranties, and a five-figure do-over in just a few years. The right contractor stands behind their work; the wrong one disappears after the final check clears. The difference almost always comes down to the questions to ask a roofer before you sign anything. This guide walks through the questions that separate licensed professionals from fly-by-night crews, grouped by the areas that matter most.

Licensing and Insurance

Before discussing shingles or price, confirm the contractor is legally allowed to work on your home and that you’re protected if something goes wrong. Licensing requirements vary by state and sometimes by county or city, so there’s no single national rule. The key is that a legitimate contractor can show you proof on demand and doesn’t get defensive about it.

• Are you licensed in this state, and can I see the license number? Ask for the number, then verify it with your state’s licensing board or contractor registry. Some states don’t require a specific roofing license, but most require a general contractor or home improvement license.
• Do you carry general liability insurance, and what are the coverage limits? This protects your property if the crew damages it. Don’t settle for a verbal “yes” — request a certificate of insurance.
• Do you carry workers’ compensation insurance? If a worker is injured on your roof and the contractor lacks coverage, you could be held liable for medical bills. Verify the certificate is current, not expired.
• Will you provide proof of insurance with me and my property listed as additionally insured? This is standard practice among professional roofers and adds a layer of protection.
• Are you bonded, and what does the bond cover? A bond offers recourse if the contractor fails to complete the job or meet contract terms.

If a contractor hesitates on any of these, treat it as a warning sign — not a negotiation point.

Experience and References

Years in business matter, but so does a contractor’s history with your specific roof type and local building codes. A roofer who has only done asphalt shingles isn’t automatically the right choice for a standing-seam metal roof or a steep slate roof.

• How long have you been in business under this name? Companies that change names often do so to shed bad reviews or legal trouble. Check the business’s history and whether it operates under other names.
• Are you certified by any roofing material manufacturers? Manufacturer certifications (such as those offered by major shingle brands) usually require passing installation training and can be required for certain enhanced warranties.
• Have you installed my specific type of roof before, and how often? Ask for examples of similar projects, not just roofs in general.
• Can you provide references from the last 12 months? Recent references are more useful than old ones. Call them and ask whether the job finished on time, on budget, and without surprise charges.
• Do you have a local office or physical address? A local address means the company is reachable after the job is done. Out-of-state crews that chase storms are often gone before problems surface.
• Will you pull the required permits, and are you familiar with local building codes? Permitting is the contractor’s job, and a roofer who suggests skipping permits to save money is asking you to take on legal risk.

Materials and Warranty

Roofing warranties split into two categories that homeowners often conflate: the manufacturer’s warranty, which covers defects in the materials, and the workmanship warranty, which covers installation errors. Both matter, and you need to understand what each one actually protects.

• What material are you recommending, and why? A good contractor explains the tradeoffs — cost, lifespan, weight, and weather resistance — rather than pushing whatever is on sale.
• What is the manufacturer’s warranty, and what does it actually cover? Read the terms. Many material warranties are prorated, cover only the cost of the material (not labor), or require specific installation details to stay valid.
• What is your workmanship warranty, and how long does it last? This covers mistakes the installer makes. A typical workmanship warranty might run anywhere from one to ten years or more; get the duration and terms in writing.
• Are there conditions that would void the manufacturer’s warranty? Improper ventilation, skipped underlayment, or mixing incompatible components can all void coverage. A contractor should know these conditions and install to avoid them.
• Do you offer an enhanced or “lifetime” warranty, and what does it require? Some manufacturers extend better coverage when the system is installed by a certified contractor. Ask what’s needed to qualify and what it costs.
• Will the warranty transfer if I sell the home? Transferability affects resale value and whether the coverage has real long-term worth to you.

The single most important distinction to internalize: a manufacturer’s warranty won’t pay to fix a leak caused by bad installation. That’s what the workmanship warranty is for — so don’t accept “the shingles are warrantied for 30 years” as an answer about workmanship.

Pricing and Estimate Specifics

A vague number is not an estimate. A professional bid is itemized, explains what’s included, and accounts for the condition of your existing roof. For more on how to read the numbers, see our roofing estimate guide.

• Can I get a written, itemized estimate? The estimate should break out materials, labor, permits, disposal, and any other line items. Refuse any quote delivered only verbally.
• Does the estimate include tear-off and disposal of the old roof? Some bids exclude tear-off or landfill fees, which can add thousands. Ask explicitly whether the old material is removed or roofed over.
• What happens if you find rotted or damaged decking once the old roof comes off? Decking repairs are the most common surprise cost. Ask how the contractor prices repairs — per sheet, per square foot — and get it in writing.
• Is this a fixed price or an estimate subject to change? Push for a fixed price for the defined scope. If extras are possible, the pricing method for them should be spelled out.
• What are the payment terms, and how much is due upfront? Avoid contractors who demand full or large payment before work begins. A reasonable deposit followed by progress payments is standard; in many states there are legal limits on down payments.
• How do you handle change orders? Any scope change should be documented and signed before the work happens, never billed as a surprise afterward.

Project Logistics: Timeline, Crew, Cleanup, and Weather

The best roofer on paper is only as good as their execution. Logistics questions reveal whether the contractor runs a real operation or improvises on your dime.

• When can you start, and how long will the job take? Get a realistic schedule in writing. Be wary of a date that’s either suspiciously immediate or vaguely “soon.”
• Who is the on-site supervisor or project manager, and how do I reach them? You want a named point of contact who is actually on-site or reachable daily, not a rotating cast of subcontractors.
• Do you use your own employees or subcontractors? If subcontractors are used, ask whether they carry their own insurance and how the contractor vets them. Subcontracting isn’t automatically bad, but it changes who is accountable.
• How do you protect my property during the job? Ask about protecting landscaping, siding, gutters, and windows, and how they’ll handle falling debris.
• How do you handle cleanup and disposal? Confirm that the crew removes old materials, nails, and debris, and ask whether a magnetic sweep for stray nails is part of the process.
• What happens if weather delays the job? Ask how the roof will be protected if it rains mid-project — tarping, temporary covering — and how scheduling changes are communicated.
• What does the project site look like at the end of each day? A professional crew secures the site daily, especially if a roof is partially open overnight.

Red Flags to Walk Away From

Some warning signs are obvious once you know to look for them. Any one of the following is reason enough to get another bid; several together mean you should walk away.

FAQ

How many roofing estimates should I get?

Aim for at least three written estimates from licensed, insured contractors. Comparing three itemized bids gives you a realistic sense of market pricing and reveals outliers — both suspiciously high and suspiciously low. See our roofing estimate guide for how to compare bids line by line.

What’s the difference between a workmanship warranty and a manufacturer’s warranty?

A manufacturer’s warranty covers defects in the materials themselves, while a workmanship warranty covers mistakes the installer makes. The two cover different risks: a shingle that fails prematurely is typically a material claim, but a leak caused by improper flashing or underlayment is a workmanship issue. Always confirm both are offered and get the terms in writing.

Should I be suspicious if a roofer asks for a large deposit?

Some deposit is normal to secure a spot and order materials, but a demand for full or near-full payment before work begins is a major red flag. In many states, down payment amounts are legally capped for residential work. Keep the deposit reasonable and tie remaining payments to completed milestones.

Do I need to be home while the roof is being replaced?

You don’t have to be home for the entire project, but you should have a named on-site contact and a way to reach the project manager. Being present at the start and end of the job lets you confirm the scope and inspect the finished work, including the cleanup.

What should be in a roofing contract?

A complete contract names the contractor and license number, describes the full scope of work, lists the specific materials and quantities, states the total price and payment schedule, includes start and estimated completion dates, and spells out warranty terms and cleanup responsibilities. Never sign a contract with blank sections or vague language like “as needed.”

The Bottom Line

The questions to ask a roofer aren’t about being difficult — they’re about protecting the largest asset you own. A legitimate contractor answers them quickly, with documents to back up their claims. A contractor who dodges questions about licensing, insurance, or written warranties is telling you something important about how they’ll handle problems after the check clears.

Take the time to ask, verify what you’re told, and get everything in writing. The hour you spend vetting a roofer now is nothing compared to the cost and stress of a failed roof later.