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Welcome to

DIAMOND ROOFING

Diamond Roofing provides South Jersey Roofing, Gutters, Skylights & Attic Fans.  Our Company is a licensed & insured Factory Certified GAF Roofer and Owens Corning Preferred Roofing Contractor. Our South Jersey area Residential and Commercial work includes shingle replacement, flat roofs, rubber roofing, skylight installation & repair. We also install seamless gutters, gutter guard systems, and specialize in attic ventilation.

We offer the lowest prices — GUARANTEED — and we'll beat any written offer. We will return your phone call within 24 hours during the week.

Keep in mind that your roof protects your most valuable asset’s which is your family and your home.  Give yourself a piece of mind knowing that a roofing company only with decades of experience is your best choice to protect your assets.   Remember, we are NOT a General Contractor, we are a Roofing Company that can professionally and accurately complete up to 4 residential roofing projects in a single day with the amount of associates we have.

Call us today at 609-268-9200 for a free estimate!

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ABOUT US

Diamond Roofing started in business as a general contractor in 1986 before focusing solely on roofing in 1993 to become South Jersey's premier roofing specialist. We are fully licensed and insured in New Jersey. Our work is owner supervised by Dave Mikulski, and includes a 10-year workmanship warranty.  Our associates are dedicated to Diamond Roofing and strive to provide customer satisfaction.

We accept cash, personal checks, all major credit cards, and offer limited financing.

Materials and Warranties

All of Diamond Roofing Projects come with a 10-year workmanship warranty.  We use GAF and Owens Corning roofing products and offer a 30-year Standard warranty or 50-year lifetime warranty on shingles. We'll submit the warranty information for every project.

Testimonials

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"Dave the owner arrived on time. The crew explained the process, kept us informed of any issues found and solutions to fix. Returned after for inspection, final review and payment."

"I give them all A's and I would have them back."

"It took 6 hours from start to finish. Very professional. Owner was in touch the whole time and let me know what would happen step by step."

"Many workmen arrived early in the morning and started to work immediately. They first shrouded the house with a tough fiberglass so that no dust would come from windows. Then they hooked to remove the roof and later they installed the plywood. They cleaned everything very neatly after the work and they have done it beyond the expectation."

"They did a wonderful job. The work was clean and neat, and everything was done as promised."

"Fantastic job! One day start to finish, clean, efficient, polite workers and quality installation. Great price - beat all competitors."

"I have no complaints. I was amazed at how quick and efficiently they completed the project. They were very clean, cooperative and friendly. They did an awesome job."

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The Diamond Blog

Why Fall Is the Best Time to Inspect Your Roof in South Jersey

September 14, 2026

Spring gets most of the credit for roof inspections — and spring inspection has its place. But if you want the single most useful, most actionable roof assessment of the year in South Jersey, the window to do it is September and October.

What Fall Leaves Really Do to Your Gutters and Roof

September 10, 2026

Every fall, South Jersey homeowners watch their trees put on a show — the oaks and maples turning in October, the leaves dropping through November. It’s one of the genuinely beautiful things about this time of year. What’s less beautiful, and considerably more expensive to ignore, is what those leaves do to gutters and roofs over the course of six weeks of continuous fall drop.

Your September Roof and Gutter Preparation Guide for South Jersey

September 7, 2026

September is the month South Jersey roofs earn their keep. Summer’s heat and storms gave way to something more demanding — the first real nor’easters of the season, early leaf drop loading gutters that haven’t been touched since spring, temperature swings that stress shingles and flashing in ways July’s consistent heat never did. How a roof performs through September and October largely determines how a home handles the winter that follows.

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