When repairs are no longer enough, a full roof replacement is the smartest investment you can make in your property. At Grablis Roofing Specialists, we've been replacing roofs across Delaware, Pennsylvania, Maryland, and New Jersey since 1986. We use only GAF, CertainTeed, and Owens Corning materials — installed by factory-trained crews — so your new roof comes with manufacturer warranties up to 50 years, plus our own 20-year workmanship guarantee. From the first inspection to the final cleanup, you'll get written estimates, photo documentation, and daily communication. No surprises, no bait-and-switch pricing, no ghosting.
We install GAF, CertainTeed, and Owens Corning systems that carry transferable manufacturer warranties — protecting your home and its resale value for decades.
Our own labor warranty covers installation defects for 20 years. If something isn't right, we come back — no questions asked.
Our GAF certification means our installation team is trained by the manufacturer to install roofing systems exactly to spec, unlocking the best warranty coverage available.
If you sell your home, the remaining warranty transfers to the buyer — a powerful selling point that can increase your property value.
We inspect your roof, document everything with photos, and provide a line-itemed written estimate — materials, labor, disposal, and permits. No pressure.
We help you choose the right shingle or system for your home, budget, and aesthetic — with samples and warranty documentation.
We confirm the night before, protect your landscaping and property, and arrive within the agreed window.
We remove the old roof, inspect and repair the decking, install underlayment and flashing, then the new roofing system — typically completed in 1-2 days.
We magnet-sweep for nails, haul away all debris, and walk you through the finished job with before-and-after photos.
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