Quick Answer: What Should You Check Before Hiring a Roofer?

Before hiring a roofing contractor, verify licensing, insurance, local experience, references, certifications, written estimates, warranties, permit handling, project supervision, cleanup, and post-project documentation. In California, homeowners should confirm a C-39 Roofing Contractor license through the Contractors State License Board and request proof of both liability insurance and workers’ compensation coverage.

• Ask for the contractor license number and verify it independently.
• Get at least three detailed written estimates.
• Confirm what materials, labor, permits, cleanup, and warranties are included.
• Watch for pressure tactics, vague contracts, and requests for full upfront payment.
• Start with an independent roof inspection when you need an unbiased condition report.

Why Choosing the Right Roofing Contractor Matters

A roof repair or replacement is one of the largest maintenance decisions a homeowner makes. Your roof protects the structure, interior finishes, insulation, electrical systems, and personal property below it. A low bid can become expensive quickly if the work is incomplete, improperly permitted, or performed by an uninsured crew.

Common problems from hiring the wrong roofer include leaks that return after the first rain, voided manufacturer warranties, unpermitted work that complicates a future sale, damaged landscaping, poor cleanup, and contractors who disappear before warranty issues are resolved. These problems are preventable when you ask direct questions before work begins.

Cert-A-Roof has completed more than 75,000 roof inspections over more than 30 years in business. Our NRCIA-certified inspectors have seen how roofing projects go right and how they go wrong. This guide is written from that inspection-first perspective.

10 Questions to Ask a Roofing Contractor

1. Are you licensed, bonded, and insured?

This is the first question to ask a roofer. In California, roofing contractors need a C-39 license. Ask for the license number, the exact business name on the license, and proof of current insurance. Then verify the information through the state licensing database instead of relying only on a document handed to you during an estimate.

Insurance matters because roofing is high-risk work. If a worker is injured on your property and the contractor does not carry workers’ compensation insurance, you could face liability. If the contractor damages your home and lacks general liability coverage, recovering costs can be difficult.

2. How long have you worked in this local market?

Roofing experience is local. Southern California homes face sun exposure, Santa Ana winds, coastal moisture, wildfire debris, and strict permitting requirements. A contractor who understands local roof types, city requirements, and climate patterns is better prepared to recommend the right repair or replacement approach.

Ask how long the company has operated under the same name, how many projects it completes in your area, and whether it has experience with your specific roof system. Longevity is not the only measure of quality, but it is a useful signal that the company has a reputation to protect.

3. Can you provide recent local references?

A qualified roofing contractor should be able to provide references from recent projects similar to yours. When you call those references, ask whether the project stayed on budget, whether the crew protected the property, how communication was handled, and whether the roof has performed well since completion.

Reviews are helpful, but references let you ask specific follow-up questions. Photos of completed work are useful too, especially when they show details such as flashing, valleys, vents, skylights, gutters, and cleanup.

4. What certifications or professional standards do you follow?

Certifications show whether a roofer has invested in training beyond basic licensing. Manufacturer certifications may indicate training on specific materials. NRCIA certification is especially relevant for roof inspection and certification work because it reflects standardized inspection practices, documentation, and professional expectations.

Ask what each certification actually means. Some credentials are rigorous, while others are marketing badges. A professional contractor should be able to explain the training, standards, or continuing education behind each one.

5. What exactly does your estimate include?

A roofing estimate should be more than a single price. It should describe materials, labor, tear-off, underlayment, flashing, ventilation, permits, disposal, cleanup, payment schedule, start date, and expected completion date. If repairs are recommended, the estimate should explain what problem each repair is meant to solve.

Get at least three written estimates before choosing a contractor. Do not automatically choose the lowest bid. A much lower price may omit permit costs, skip important components, use lower-grade materials, or leave room for expensive change orders after work begins.

Need help comparing estimates? Cert-A-Roof can inspect the roof and document its condition before you commit to a scope of work. Contact us online or call 888-766-3800.

6. What warranty do you provide?

Roofing warranties usually fall into two categories: manufacturer warranties and workmanship warranties. A manufacturer warranty covers defects in the roofing material. A workmanship warranty covers the contractor’s installation work. Both matter, but they are not the same.

Ask what is covered, what is excluded, how long the warranty lasts, whether it transfers to a future buyer, and what actions could void it. Also ask who handles warranty claims. A long material warranty is less valuable if installation mistakes are excluded or if the contractor is difficult to reach after the job.

7. Who will supervise the project?

Clear project supervision reduces mistakes. Ask whether the owner, a project manager, or a foreman will be on site. Ask how often you will receive updates and who you should contact if you notice a problem. If subcontractors will be used, confirm that they are also properly licensed and insured for the work they perform.

You should know who has authority to approve changes, answer technical questions, and confirm that the finished work matches the contract. If no one can explain the supervision plan, that is a warning sign.

8. How do you handle unexpected roof damage?

Hidden damage is common in roofing. Once old material is removed, the crew may find rotted decking, damaged fascia, poor ventilation, or previous repairs that were concealed. The question is not whether surprises can happen. The question is how the contractor handles them.

Ask whether you will receive photos, written change orders, and pricing before extra work begins. A professional process protects both sides. Vague language such as “we will figure it out later” can lead to disputes when the final invoice arrives.

9. Will you pull permits and schedule required inspections?

Permits are required for many roofing projects. The contractor should know which permits apply, who is responsible for obtaining them, and how required inspections will be scheduled. Skipping permits can create problems with insurance claims, resale, and code compliance.

Be cautious if a contractor says permits are unnecessary without explaining why. Also be cautious if the contractor asks you to pull the permit as an owner-builder to save money. That can shift responsibility onto you.

10. What happens after the project is complete?

The final stage matters. Ask whether the contractor performs a final walkthrough, removes debris, uses magnets to collect nails, provides warranty paperwork, and supplies photos or inspection documentation. If your roof was repaired for a real estate transaction, insurance issue, or certification requirement, written documentation is especially important.

Professional roofers close the loop. They do not simply finish the installation and leave you guessing about maintenance, warranties, or future inspections.

Red Flags When Hiring a Roofer

Some warning signs should make you pause, even if the price looks attractive. Watch for contractors who cannot provide a license number, avoid written estimates, demand full payment upfront, pressure you to sign immediately, use only a P.O. box, refuse to provide insurance documentation, or discourage permits.

Storm-related door-to-door sales also deserve caution. Some legitimate contractors canvass neighborhoods, but storm chasers may collect deposits and leave before warranty issues appear. Take time to verify the company, read the contract, and compare proposals.

General Roofer vs. Certified Roof Inspector

Many homeowners ask a roofing contractor to inspect the roof and recommend work. That can be convenient, but it can also create a conflict of interest. A contractor who profits from repair or replacement may have an incentive to recommend more work than you need.

A certified roof inspector focuses on documenting roof condition. At Cert-A-Roof, NRCIA-certified inspectors evaluate the roof, identify visible issues, provide photos, and explain what the findings mean. This inspection-first approach helps you decide whether a repair, replacement, maintenance plan, or LeakFREE roof certification is appropriate.

How to Compare Roofing Estimates

Once you have multiple estimates, compare scope before price. One proposal may include new flashing, ventilation improvements, permit fees, tear-off, and disposal. Another may list only basic materials and labor. Those are not equal bids.

Create a simple comparison chart with rows for materials, underlayment, flashing, ventilation, permits, cleanup, warranty, payment schedule, and timeline. If a proposal leaves a row blank, ask for clarification in writing. This process makes it easier to choose a roofing contractor based on value, not guesswork.

If the estimates disagree sharply about what your roof needs, get an independent inspection. A third-party report can help you understand whether a recommended repair is necessary or whether a larger replacement recommendation is justified.

When Should You Schedule a Roof Inspection First?

Schedule a roof inspection before hiring a contractor when you are buying or selling a home, preparing for major repairs, dealing with an insurance claim, comparing conflicting estimates, or trying to determine whether your roof can be certified. It is also smart before listing a property because roof issues can delay escrow or create negotiation problems.

Cert-A-Roof provides roof inspection services for homeowners, buyers, sellers, real estate professionals, property managers, and insurance-related situations. The goal is to give you clear documentation before you make a high-stakes decision.

Frequently Asked Questions

How many roofing estimates should I get?

Get at least three written roofing estimates. Three estimates give you enough information to compare pricing, scope, materials, warranties, and communication style. If one estimate is far lower than the others, ask what is excluded before accepting it.

What is the most important question to ask a roofer?

The most important question is whether the roofer is licensed and insured. Without proper licensing and insurance, you may face financial risk if the work is defective, a worker is injured, or property damage occurs.

Should I choose the cheapest roofing contractor?

Not automatically. The cheapest roofing contractor may be the right choice only if the scope, materials, warranty, permits, supervision, and insurance are comparable to the other bids. A low price that omits important work can cost more later.

Should I get a roof inspection before hiring a contractor?

Yes, especially if the project is expensive, the estimates conflict, or you are not sure what your roof needs. An independent inspection gives you an objective baseline before you approve repairs or replacement.

How do I verify a roofing contractor in California?

Ask for the contractor’s C-39 license number and verify it through the California Contractors State License Board. Confirm the license is active, matches the business name, and is supported by current insurance documentation.

Choose With Confidence

Knowing how to choose a roofing contractor starts with asking better questions. Verify the basics, compare written scopes, understand the warranty, and make sure the contractor has a clear process for permits, supervision, cleanup, and documentation.

If you want an unbiased starting point, Cert-A-Roof can help. Our NRCIA-certified inspectors have completed more than 75,000 inspections and bring more than 30 years of roofing experience to every evaluation. Whether you need a pre-project inspection, roof repair guidance, or a certification for a real estate transaction, we can document the roof’s condition and help you move forward with confidence.

Request an appointment or call 888-766-3800 to schedule your roof inspection with Cert-A-Roof.