How to Choose the Right Roofing Contractor in NJ

Choosing a roofing contractor in New Jersey is one of the most important decisions you will make as a homeowner. Your roof protects everything underneath it — your family, your belongings, your peace of mind. Get it right, and you have decades of worry-free protection. Get it wrong, and you could be dealing with leaks, shoddy workmanship, voided warranties, and thousands of dollars in avoidable repairs.

We have seen it all in Bergen County and across Northern NJ. Homeowners who hired the cheapest bidder and ended up paying twice. Families who signed contracts with storm chasers who disappeared after collecting a deposit. People who thought they had a warranty, only to find out their contractor was not actually certified to offer one.

This guide covers everything you need to know before you hire a roofing contractor in New Jersey. Whether you need a full roof replacement, emergency storm damage repair, or a simple inspection, these ten steps will help you find a contractor who does the job right the first time.

1. Verify Their New Jersey Contractor License

This is non-negotiable. New Jersey requires home improvement contractors to register with the Division of Consumer Affairs. Any legitimate roofing contractor will have a valid NJ Home Improvement Contractor (HIC) registration number.

You can verify a contractor's registration on the NJ Division of Consumer Affairs website. If they cannot provide a registration number, or if their number comes back as expired or revoked, walk away immediately. Operating without registration is illegal in New Jersey, and it means you have zero legal recourse if something goes wrong.

2. Check for Proper Insurance Coverage

A roofing contractor working on your property should carry at minimum two types of insurance:

• General Liability Insurance: This protects your property if something goes wrong during the job. If a crew member accidentally damages your siding, drops a tool through a window, or causes water damage during tear-off, general liability covers the repairs. Without it, you could be stuck paying for the damage yourself.
• Workers' Compensation Insurance: Roofing is one of the most dangerous trades in construction. If a worker is injured on your property and the contractor does not carry workers' comp, you could be held liable for medical bills and lost wages. In New Jersey, workers' comp is required by law for any employer with one or more employees.

Do not just take their word for it. Ask for a Certificate of Insurance (COI) and call the insurance company to verify it is current. Policies can lapse, and some contractors let their coverage expire after obtaining it to bid on jobs.

3. Look for Manufacturer Certifications

There is a significant difference between a contractor who buys shingles off a supply truck and one who is factory-certified by the manufacturer. Certified contractors have completed specialized training, met strict quality standards, and are authorized to offer enhanced manufacturer warranties that go far beyond the standard material warranty.

The three most recognized certifications in the roofing industry are:

• GAF Master Elite: Only about 2% of all roofing contractors in the country hold this designation. GAF Master Elite contractors can offer the Golden Pledge warranty, which covers materials and workmanship for 25 years with 100% coverage for the first 10 years.
• Owens Corning Preferred Contractor: These contractors meet Owens Corning's standards for reliability, quality, and customer service. They can offer the Platinum Preferred Protection warranty, which covers defects in workmanship for 25 years.
• CertainTeed SELECT ShingleMaster: This certification requires contractors to demonstrate installation expertise and maintain good standing. They can offer the SureStart PLUS extended warranty with 100% coverage for the first five years.

At Lumii Roofing, we carry both GAF and Owens Corning certifications because we believe our customers deserve the strongest warranties available. When you hire a certified contractor, you are not just buying shingles — you are buying a warranty that actually means something.

4. Read Reviews and Check References

Online reviews are your most powerful research tool. But you need to know where to look and what to look for.

Start with Google Business reviews — these are the hardest to fake because they are tied to real Google accounts. Look at the overall rating, but more importantly, read the actual reviews. Pay attention to how the contractor responds to negative reviews. A professional response to a complaint tells you more about a company than 50 five-star reviews.

Also check:

• Better Business Bureau (BBB): Look for an A or A+ rating and check for any unresolved complaints.
• Angi (formerly Angie's List): Verified reviews from homeowners who actually hired the contractor.
• Facebook recommendations: Local community groups in Bergen County and Northern NJ are full of real homeowner recommendations.

Beyond online reviews, ask the contractor for three to five recent references in your area. Call them. Ask about the quality of work, whether the project stayed on budget, how the crew handled unexpected issues, and whether the contractor cleaned up after the job.

5. Get Multiple Written Estimates

We recommend getting at least three written estimates before making a decision. Each estimate should include:

1. Detailed scope of work: Exactly what is being done, from tear-off to final cleanup. A vague estimate is a red flag.
2. Material specifications: The brand, product line, and color of shingles, as well as the type of underlayment, ice and water shield, and flashing materials.
3. Labor costs: Either listed separately or included with a clear description of what labor covers.
4. Timeline: Estimated start date and completion date.
5. Warranty details: Both the manufacturer warranty and any workmanship warranty offered by the contractor.
6. Payment schedule: When payments are due and what percentage is required upfront.

Be cautious of any estimate that is dramatically lower than the others. In roofing, a price that seems too good to be true almost always is. The low bidder might be cutting corners on materials, skipping critical steps like replacing the underlayment, or planning to use unlicensed subcontractors.

6. Ask About Their Crew and Subcontractors

Some roofing companies employ their own crews. Others subcontract the actual installation work to third parties. Neither approach is inherently bad, but you should know who will be on your roof.

Questions to ask:

• Will your own employees be doing the work, or do you use subcontractors?
• How long has your crew been working together?
• Does your crew foreman speak English fluently? (Important for communication about unexpected issues during the job.)
• Are all workers covered under your insurance policy?
• Will you be on-site during the installation?

A company that employs its own trained crews typically offers more consistent quality because they control the training, safety standards, and workmanship. If a contractor uses subcontractors, make sure they carry their own insurance and that the general contractor takes responsibility for their work.

7. Understand the Warranty — All of It

Roofing warranties are more complicated than most homeowners realize. There are actually two separate warranties that apply to your new roof:

• Manufacturer Warranty: This covers defects in the roofing materials themselves. Most major brands offer a "lifetime" limited warranty on their architectural shingles, but the fine print matters. Coverage often decreases after the first 10-15 years, and many material warranties are prorated, meaning you pay an increasing percentage of the replacement cost over time.
• Workmanship Warranty: This covers the installation itself. If a leak develops because the contractor improperly installed flashing, forgot ice and water shield in a valley, or made any other installation error, the workmanship warranty covers the repair. This warranty comes from the contractor, not the manufacturer — which is why choosing a reputable, established company matters so much.

Manufacturer certifications unlock enhanced warranties that cover both materials and workmanship under a single policy. These system warranties are the gold standard in the roofing industry and provide far better protection than standard material-only warranties.

8. Watch Out for Storm Chaser Warning Signs

After every major storm in Northern NJ, a wave of out-of-state contractors floods the area, going door-to-door offering free inspections and promising to handle your insurance claim. These storm chasers are some of the biggest risks to NJ homeowners. Here is how to spot them:

• They show up at your door uninvited within days of a storm
• They have out-of-state license plates on their trucks
• They cannot provide a local business address (a P.O. box does not count)
• They offer to waive your insurance deductible (illegal in NJ)
• They pressure you to sign a contract immediately
• They ask for a large deposit before starting work
• Their online presence is thin — few reviews, no local photos, a website that looks like it was set up last week

Storm chasers do the minimum work needed to collect payment, then move on to the next disaster area. When a problem surfaces six months later, good luck finding them. Stick with established local contractors who have a physical presence in your community and a reputation to protect.

9. Get Everything in Writing

A handshake deal is not a contract. Before any work begins, you should have a signed written contract that includes:

• The contractor's full legal business name, address, phone number, and NJ HIC registration number
• A detailed description of all work to be performed
• All material specifications (brand, product, color)
• The total project cost and payment schedule
• Estimated start and completion dates
• Warranty information for both materials and workmanship
• A clause covering how change orders will be handled
• Cleanup and debris removal responsibilities
• A cancellation clause (NJ law gives you three business days to cancel most home improvement contracts)

Read the entire contract before signing. If anything is unclear, ask for clarification. A good contractor will patiently walk you through every line item.

10. Trust Your Gut

After doing your research, getting estimates, and checking references, pay attention to how you feel about each contractor. The best roofing companies make you feel informed, not pressured. They answer your questions directly. They show up on time. They communicate clearly about what they found during their inspection and what they recommend.

If a contractor makes you feel rushed, avoids your questions, or gives you a bad feeling for any reason — trust that instinct. There are plenty of qualified roofing contractors in NJ. You do not have to settle for one who does not earn your confidence.

Why Northern NJ Homeowners Trust Lumii Roofing

We built Lumii Roofing on a simple idea: treat every homeowner the way we would want to be treated. That means transparent pricing, honest assessments, certified installations, and a team that answers the phone when you call.

• NJ Licensed and Fully Insured: HIC registered with full general liability and workers' compensation coverage.
• GAF Certified & Owens Corning Preferred: Factory-trained crews that unlock the best warranties in the industry.
• Detailed Written Estimates: Every line item explained. No hidden fees. No surprise charges after tear-off.
• Local Reputation: We live and work in Bergen County. Our neighbors are our customers, and our reputation is everything.
• Emergency Response: Storm damage does not wait for business hours. Call us 24/7 at (201) 948-2156.

Whether you are comparing contractors for a scheduled roof replacement or dealing with unexpected storm damage, we are happy to provide a free inspection and honest assessment — even if you end up choosing someone else. That is how confident we are in what we offer.