
Owens Corning Roof Replacement
An Owens Corning roof replacement from GAX Roofing is not a layer of new shingles over old problems. It is a complete roof system, built from the deck up, installed by an Owens Corning certified installer, and documented with drone photos you keep. We are a family-owned roofing contractor based in Rancho Cucamonga, serving the Inland Empire from San Bernardino County to Orange County, and this is the shingle roof we put our name on. Here is what a full system actually means, because this is where cheap bids hide. Your roof is not the shingles you see from the street. It is seven layers working together, and when a contractor quotes you a number without naming the layers, you are usually buying the visible one and keeping everyone else's problems. Our replacement starts with a complete tear-off down to the wood deck. We inspect every foot of that deck, and wood replacement is written into your contract as a stated allowance before anyone climbs a ladder, so a soft spot never becomes a surprise change order. On that clean deck goes Owens Corning WeatherLock self-sealing ice and water barrier at the vulnerable spots, then ProArmor synthetic underlayment across the field, the waterproof layer that does the quiet work for decades. New metal drip edge and new flashings go on, and we mean new: reusing old flashings on a new roof is one of the most common corners cut in this industry, and it is where leaks come back first. Starter shingles lock the edges, then Owens Corning TruDefinition Duration shingles go down with their SureNail strip nailed to manufacturer spec. When the project calls for it, we install the COOL series in the same line, which reflects more of the sun that Inland Empire summers throw at your roof. The system finishes at the top with ventilation done right: an Owens Corning VentSure ridge vent or low-profile O'Hagin vents depending on your roof, capped with DecoRidge high-profile hip and ridge shingles. Ventilation is not a detail. A roof that cannot breathe cooks its own underlayment from the attic side, and we have opened up too many ten-year-old roofs that died young for exactly that reason. Why does the certification matter? Because a shingle warranty is only as good as the installation underneath it. Manufacturer coverage holds when the system is installed to spec by trained crews, and that is precisely what an Owens Corning certified installer is trained and audited to do. You get the manufacturer's material coverage on the components, and on top of it you get the GAX 10-year labor warranty in writing: if the roof leaks because of something we did, you call us and we take care of you. No fine-print dance. Every job is documented from the air and from the deck. Our drone photographs your roof before, during, and after, so you see your actual decking, your actual underlayment, and your actual finished roof, not a brochure. If you ever sell the house, that documentation folder is proof of what is under your shingles. We pull the city permit on every replacement and you get the receipt, because a roofer who skips the permit is planning on you never verifying anything. And before the crew leaves, the site gets cleaned and the yard gets swept with magnets, twice. No nails in the grass, no scraps in the flowerbed. Our customers mention the cleanup in their reviews almost as often as the roof. The estimate itself works the way you would want if a family member were quoting you. We come out, get on the roof, and give you a real number in writing that names every component, at no cost and with no pressure. We will not sit in your living room for three hours grinding you down, and we will not sell you a loan you did not ask for. If a repair is the honest answer instead of a replacement, we will tell you that too, and we bring a thermal imaging camera on repair calls to find the actual source instead of guessing at stains. Financing options are available on approved credit for projects where the timing is bad but the roof cannot wait. GAX Roofing is licensed by the California Contractors State License Board, C39 #1135657, bonded and insured, and we hold a 5.0 rating on Google, every review from a real customer on a real roof. We serve Rancho Cucamonga, Fontana, Ontario, Upland, Chino, Chino Hills, Eastvale, Riverside, San Bernardino, Corona, Pomona, Claremont, and the surrounding Inland Empire, with service in English and Spanish. If your shingle roof is past 20 years old, curling, shedding granules, or already letting the first rains in, get eyes on it before the season decides for you. Free estimates. Roofs done right the first time.


