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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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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.



"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


Roof Skylights Make Life Better

December 20, 2021

Skylights date back to ancient Rome! Even Nero knew that letting sunlight stream into an interior space was much desired.

Repair or Reroof?

March 18, 2021

The key to minimizing costs related to any home improvement is making an informed decision, especially for large roofing projects.

Before and After a Roof Replacement

March 18, 2021

Diamond Roofing is an expert on both residential and commercial roof replacement projects as we perform over 400 roofing projects annually and cover all of South Jersey.