Photo by Point3D Commercial Imaging Ltd. on Unsplash

Summer is the busiest season in the roofing industry, and South Jersey is no exception. From June through August, roofing contractors across the region are running full schedules — and that demand creates an environment where shortcuts happen, unqualified crews appear, and homeowners who don’t know what to look for can end up with a bad outcome on a significant investment.

Hiring the right roofer in summer takes a little more diligence than it does in the off-season. Here’s exactly what to look for — and what to walk away from.

Verify New Jersey licensure before anything else

New Jersey requires all home improvement contractors to register with the Division of Consumer Affairs under the Home Improvement Contractor (HIC) law. This isn’t optional, and it isn’t a technicality — it’s the baseline legal protection that gives you recourse if something goes wrong. Ask any contractor for their NJ HIC registration number and verify it at njconsumeraffairs.gov before signing anything.

A contractor who can’t produce a registration number, or who tells you it “doesn’t apply” to their type of work, is operating illegally in New Jersey. That’s your answer on whether to hire them.

Diamond Roofing’s New Jersey Home Improvement Contractor license number is #13VH01716900. We’ll give it to you without being asked — because legitimate contractors have nothing to hide about their credentials.

Confirm they carry the right insurance — in writing

Two types of insurance are non-negotiable for a roofing contractor working on your home: general liability and workers’ compensation. General liability covers property damage if something goes wrong during the job. Workers’ compensation covers crew members if someone is injured on your property — without it, you could be liable for medical costs and lost wages under New Jersey law.

Don’t just take a contractor’s word for it. Ask for a certificate of insurance (COI) naming you as an additional insured on the liability policy, and confirm the policy is current. A legitimate contractor will produce this without hesitation. One who stalls or makes excuses is telling you something important.

Understand what “certified” actually means

Manufacturer certifications like GAF’s Factory Certified program and Owens Corning’s Preferred Contractor designation are more than marketing labels. They indicate that a contractor has met installation training requirements, carries proper insurance, maintains a satisfactory track record, and — critically — can register extended warranty coverage that non-certified installers cannot offer.

When you hire a certified contractor, your roof warranty is registered with the manufacturer at the time of installation. When you hire a non-certified contractor, you may have a manufacturer warranty in name only — one that can’t be enforced because the installation was never registered or doesn’t meet certification requirements.

Get at least three written quotes — and read them carefully

In summer, some contractors bank on homeowners being too busy or too eager to get the work done before fall to bother comparing quotes. Don’t make that mistake. Three written quotes from established contractors gives you a realistic picture of market pricing and reveals what each contractor is actually proposing — which often differs more than the bottom-line number suggests.

1. Tear-off vs. roof-over — confirm the quote includes a full tear-off of existing shingles, not installation over the old layer
2. Shingle brand and product line — “architectural shingles” covers a wide range; confirm the specific product, its warranty rating, and whether it’s being registered in your name
3. Underlayment and ice-and-water shield — confirm what’s going under the shingles and where; cutting corners here is invisible and consequential
4. Ventilation — confirm whether the quote includes ridge vent installation or modification, and whether the attic ventilation will be assessed as part of the job
5. Cleanup and disposal — confirm that full debris removal and a magnetic nail sweep of the property are included before the crew leaves

Watch out for summer storm chasers

After any significant hail or wind event in South Jersey, out-of-state contractors descend on affected neighborhoods offering free inspections and promising to handle everything through your insurance company. Some are legitimate. Many are not — unlicensed, underinsured, and structured to collect deposits and disappear, or to do fast, inadequate work before moving to the next storm-hit region.

The rule is simple: only hire contractors you can verify. Check the NJ HIC number. Call references. Look up reviews that pre-date the most recent storm. A company with no local history, no verifiable license, and no references from your area is a risk not worth taking regardless of what they’re offering to do for free.

Ask about timeline — and get it in writing

Summer roofing schedules are tight, and the gap between a signed contract and an actual start date can be longer than homeowners expect. Get a written start date and an estimated completion date. Understand what happens if weather delays the job. Know who to call if you have concerns once the crew is on site.

A reputable contractor will give you direct answers to all of these questions. Vague responses about “getting you on the schedule” or “depending on how things go” are a sign that your job isn’t being managed the way it should be.

The Diamond Roofing difference

Licensed, insured, GAF Certified, and Owens Corning Preferred. We complete most South Jersey residential roofs in one day, with written warranties on both materials and workmanship.

Lowest price guaranteed

We will beat any written competitor quote — because you shouldn’t have to choose between the best-credentialed contractor and the best price. With Diamond Roofing, you get both.

The right contractor makes a roof replacement straightforward — clear communication, clean work, and a finished product backed by warranties you can actually rely on. That’s the standard every South Jersey homeowner deserves. Don’t settle for less because it’s the busy season.