Questions To Ask A Roofer Before You Hire: 17-Point Checklist
The wrong roofer can cost you $10,000 before a single shingle hits the deck. Knowing the right questions to ask a roofer separates homeowners who get a solid roof from those who spend the next five years chasing warranty claims and filing complaints. The stakes go beyond money: a botched installation can void manufacturer coverage, leave your home exposed to leaks, and tank your resale value.
The challenge is that roofing is one of the few home improvement categories where the worst problems don’t surface immediately. A bad paint job is obvious the same week. Poorly installed cabinets reveal themselves within months. But a botched roof can look completely fine for a year or two before the first leak traces its way to your ceiling, by which point the contractor has moved on and your warranty claim leads nowhere. That lag between installation and consequence is exactly why the vetting process matters here more than almost anywhere else.
17 Questions to Ask a Roofer Before You Sign Anything
Treat this numbered list as a scorecard. Print it out, bring it to every estimate appointment, and compare answers side by side once you’ve met with at least three contractors. A reputable roofer will welcome questions. If they get defensive, that’s a red flag.
- Are you licensed in this state, and can I verify your license number online?
- Do you carry general liability insurance and workers’ compensation coverage?
- Can you provide a current certificate of insurance directly from your insurer?
- How many years have you been in business?
- Will your own crews do the work, or do you use subcontractors?
- Who pulls the building permits, and are permit fees included in the estimate?
- What material brands and grades do you recommend for my roof, and why?
- What underlayment, flashing, and ventilation plan do you include?
- Can you walk me through each line item on your written estimate?
- What does your workmanship warranty cover, and for how long?
- What manufacturer warranty applies, and what could void it?
- What is the payment schedule, and what deposit do you require?
- Do you offer financing, and through which lender?
- When can you start, and what is your projected completion timeline?
- How do you handle cleanup, debris disposal, and nail sweeps?
- Can you provide at least three recent references with contact info?
- What happens if you discover decking damage after tear-off?
That last question catches many homeowners off guard. Rotten decking hides under old shingles, and how a contractor handles change orders tells you a lot about their integrity. Get the per-sheet price for decking replacement in writing before work begins.
Questions to Ask a Roofer About Licenses, Insurance, and Permits
Asking “are you licensed and insured?” isn’t enough. You need to verify the answers independently. Every state maintains a contractor licensing database online, and a legitimate roofer will hand over their license number without hesitation.
How to Verify Credentials Yourself
Call the insurance company listed on the certificate of insurance and confirm the policy is active. Certificates can be forged or expired, so going directly to the insurer is the only reliable way to check. Ask specifically about workers’ compensation coverage, because if an uninsured worker falls off your roof, you could be liable.
When reviewing a contractor’s credentials, make sure their general liability policy covers at least $1 million per occurrence (the standard minimum recommended for residential roofing work). Bonding is a separate layer of protection: it guarantees the contractor will complete the work as agreed or compensate you.
Permits matter just as much. The contractor should pull all required building permits, not you. If a roofer suggests skipping the permit to “save you money,” walk away. Unpermitted work can trigger fines, void insurance claims, and create problems when you sell your home. The full process of choosing a roofing contractor involves evaluating credentials, checking references and reviewing contract terms, not just comparing prices.
Roofing Warranty Terms
Warranties are where most homeowners get confused, and where some contractors take advantage of that confusion. You’ll encounter two main types: the manufacturer warranty (covering defective shingles or materials) and the workmanship warranty (covering installation errors by the contractor).
Manufacturer vs. Workmanship Coverage
A manufacturer warranty typically ranges from 25 years to “lifetime,” but the fine print matters. Many are prorated after the first 10 years, meaning the manufacturer pays a shrinking percentage of replacement costs as time goes on. Ask whether the warranty is prorated or non-prorated, and get the answer in writing.
Workmanship warranties vary wildly. Some contractors offer two years while others back their labor for 25. The critical detail here is knowing what voids either warranty. Improper attic ventilation, for example, can void a manufacturer warranty entirely. So can using non-approved accessories or skipping required underlayment.
Transferability and Registration
Planning to sell your home within the warranty period? Ask whether the warranty transfers to the next owner and what fees or paperwork that requires. Some manufacturer warranties also require registration within 30 days of installation, and missing that deadline can downgrade your coverage from enhanced to standard.
Contractors certified by major manufacturers can often offer extended warranty packages. Home Genius Exteriors, for instance, holds Owens Corning Platinum Preferred Contractor certification, which unlocks warranty options that standard installers can’t offer.
How to Compare Roofing Estimates and Spot Red Flags in the Fine Print
Three estimates sitting on your kitchen table can be vastly different, which makes fair comparison nearly impossible unless you know what to look for. The lowest bid isn’t always the best deal, and the highest isn’t always the best quality.
What Every Line-Item Estimate Should Include
A thorough written estimate breaks down costs for tear-off, decking inspection and replacement allowance, underlayment, drip edge, flashing, ridge vents or other ventilation, the shingles themselves, cleanup and disposal, and permit fees. If an estimate lumps everything into one number, you can’t compare it properly against a detailed one.
Pay attention to material grades, too. A bid specifying Owens Corning Duration architectural shingles tells you something very different from one that says “shingles” with no mention of brand or product. Vague material descriptions could leave room for the contractor to substitute cheaper products.
Good vs. Bad Contractor Answers
Understanding what a strong answer sounds like helps you evaluate responses on the spot. Here’s how the same questions land differently depending on contractor quality.
| Question | Good Answer | Bad Answer |
|---|---|---|
| Do you carry workers’ comp? | “Yes, here’s our certificate. You can call our insurer to confirm.” | “We’re covered, don’t worry about it.” |
| Who does the actual work? | “Our W-2 crews. Same team from start to finish.” | “We use different guys depending on the week.” |
| What if you find rotten decking? | “We charge $X per sheet, and we’ll call you before replacing any.” | “We’ll figure it out when we get up there.” |
| What’s the payment schedule? | “One-third deposit, one-third at materials delivery, final upon completion and your inspection.” | “We need 50% or more upfront before we start.” |
| What ventilation plan do you recommend? | “Based on your attic square footage, we’ll install X intake and X exhaust vents to meet code.” | “Whatever’s already up there should be fine.” |
74% of homeowners rely on recommendations from neighbors and family to find a roofer. That word-of-mouth trust is powerful, but even a recommended contractor deserves the same tough questions. Personal referrals lower risk, but they don’t eliminate it.
Warning Signs Most Homeowners Miss
A polished sales pitch can mask serious problems. These red flags should end the conversation immediately or, at minimum, trigger deeper investigation before you commit.
Pressure Tactics and Missing Documentation
Demanding full payment upfront is the single biggest warning sign. Reputable contractors structure payments in stages tied to project milestones. A contractor who insists on 50% or more before any materials arrive is either cash-strapped or planning to disappear.
No physical business address should raise alarms. Storm chasers and fly-by-night operations work out of trucks and P.O. boxes. If you can’t visit their location, how will you find them when a leak appears six months later? Common signs of a bad roofing job (like exposed nail heads, misaligned shingles or improper flashing) often don’t surface until months after installation when a leak finally appears.
Estimate and Contract Red Flags
A vague scope of work in the contract protects the contractor, not you. If the document doesn’t specify material brands, quantities, ventilation details, and cleanup responsibilities, you have no recourse when the work falls short.
Watch for missing cancellation terms and unclear change-order language. A solid contract spells out exactly how mid-project changes get priced and approved. Verbal agreements about “handling it if something comes up” protect nobody.
Treat unusually low bids with skepticism. Contractors who undercut the competition by 30% or more are typically cutting corners on materials, skipping steps (like ice-and-water shield in vulnerable areas), or planning to hit you with change orders once tear-off reveals problems they “didn’t expect.” If most of the bids cluster around a similar price but one is dramatically lower, trust the cluster.
Questions to Ask Roofers Based on Climate and Local Code
Where you live changes which questions matter most. Homeowners in the Mid-Atlantic and Midwest face specific challenges that a generic contractor checklist won’t address.
In regions prone to ice dams, ask whether the estimate includes ice-and-water shield membrane along eaves and valleys. This isn’t optional in cold climates. Similarly, areas with high wind exposure require shingles rated for specific wind speeds, and proper nail patterns to match. Contractors serving states like Ohio or Maryland should demonstrate familiarity with local building codes and storm-related requirements without you having to bring them up.
Ventilation questions also carry regional weight. Hot, humid summers require balanced intake and exhaust ventilation to prevent moisture buildup that destroys decking from the inside. If your contractor can’t calculate proper ventilation ratios for your attic square footage, they’re guessing. And guessing voids warranties.
The Better Business Bureau remains a useful resource for checking complaint history and verifying how long a company has operated in your area. Cross-reference BBB data with Google reviews and references the contractor provides for a complete picture.
Ready to put this checklist to work? Call Home Genius Exteriors today for a free inspection and estimate. Bring every question on this list. We welcome the scrutiny!
Your Pre-Hire Roofing Checklist Starts Now
The questions to ask a roofer before hiring aren’t complicated. Pay close attention to how each contractor responds, not just what they say. Confidence and transparency are good signs. Defensiveness and vagueness are not.
Your roof protects everything underneath it. The 30 minutes you spend asking questions today can save you thousands in repairs and headaches down the road. Home Genius Exteriors stands behind every answer with Owens Corning Platinum Preferred Contractor certification and warranties that match. Schedule your free roof inspection; we’re happy to answer your toughest questions.
Frequently Asked Questions
Should I get my roof inspected before I start collecting estimates?
Yes, an independent inspection (or a detailed photo report) can help you understand the roof’s current condition before contractors frame the scope. It also makes it easier to compare bids because everyone is pricing against the same known issues.
How do I make sure the contract protects me if the project runs over schedule?
Ask for a start window, a target completion date, and what counts as excusable delays (weather, material shortages). You can also request a communication cadence and remedies, such as written updates and clear criteria for approving timeline changes.
What proof should I ask for to confirm the crew is properly trained for the product being installed?
Request documentation of manufacturer training, certification IDs, and the specific system components they’re authorized to install. You can also ask who the on-site supervisor is and how they’ll be performing and documenting quality checks on the job.
How can I verify a roofer’s reviews without relying on cherry-picked testimonials?
Look for consistent feedback across multiple platforms and pay attention to review patterns, such as many reviews posted in a short period of time. Ask the contractor for addresses of recent projects in your area so you can make sure they’re actively completing similar work locally.
If I’m filing an insurance claim, what role should the roofer play in the process?
A reputable roofer can provide documentation, photos, and scope details to support your claim, but they should not pressure you to sign over claim control. Make sure you understand what you’re authorizing before signing a contingency agreement or assignment form.
What should I ask about safety and property protection during the job?
Ask how they protect landscaping, siding, windows, and HVAC units, and whether they use catch systems or tarps around the home. You can also request their written safety policy, including how they handle fall protection and daily site security.
How do I avoid being upsold on add-ons that aren’t necessary?
Ask the contractor to label each recommended upgrade as required, code-driven, or optional, and to justify it with photos or measurements. Request pricing for the base scope and each add-on separately so you can decide without pressure.
