GAF Authorized
GAF Installations in San Jose, CA
We’re a 16-year San Jose crew and GAF-certified installer. From Eichler flats in Cupertino to Victorians in Willow Glen, we deliver roofs that hold up in the South Bay.
About GAF
GAF Quality, South Bay Roofing Co. Craftsmanship
We’ve been installing GAF shingles across San Jose, Cupertino, and Willow Glen since 2010. Their Timberline line handles our coastal fog and summer heat better than anything else we’ve tried. We’re factory-certified, so every roof we lay carries the full manufacturer warranty plus our own workmanship guarantee.
GAF’s advanced protection means fewer repairs over time. Whether it’s a full replacement on an Eichler flat or a repair on a Victorian, we know the materials and the neighborhoods. That’s why we’ve stuck with GAF for 16 years—reliability you can see from the street.
Factory-certified GAF installer since 2010
Timberline shingles built for South Bay weather
Full manufacturer warranty plus our workmanship guarantee
Product Lineup
GAF Roofing Collections We Install
We're a GAF Master Elite® installer, meaning we meet the highest standards for training and certification. Here are the GAF collections we recommend most for South Bay homes.
Timberline® HDZ™
Our go-to for most San Jose homes. Algae-resistant, Class A fire rating, and a 130-mph wind warranty. We've installed this on Craftsman bungalows in Willow Glen and new builds in Evergreen.
Slateline®
A slate-look shingle that gives you the premium aesthetic without the weight or cost. We've used this on Eichler remodels in Cupertino where the flat roofline needs a clean, sharp edge.
Grand Sequoia®
For homeowners who want a thicker, more dimensional look. We've installed this on larger custom homes in Almaden Valley and Los Gatos. It's heavy-duty and holds up well to sun exposure.
ArmorShield™ II
GAF's premium impact-resistant shingle, rated for Class 4 hail. We recommend this for homes in the East Foothills where hail and falling branches are a real concern.
Why GAF
Why GAF is Built for California's Climate
We've installed GAF on hundreds of South Bay roofs—from Willow Glen to Cupertino. Here's why it holds up under our sun, rain, and seismic shifts.
Withstands extreme heat
GAF's advanced granule technology reflects UV rays, keeping your home cooler and reducing energy costs in San Jose's long summers.
Handles heavy rain
Seamless underlayment and leak-barrier systems prevent water damage during California's winter storms, protecting against mold and rot.
Seismic resilience
GAF shingles flex with ground movement, reducing the risk of water damage after earthquakes—a must for South Bay homes.
Fire resistance
Class A fire rating meets California's strict wildfire codes, giving you peace of mind in high-risk zones like the hills above Los Gatos.
Wind protection
Tested for winds up to 130 mph, GAF roofs stay intact during Santa Ana gusts, preventing water damage and costly repairs.
Eco-friendly options
GAF's Timberline Cool Series lowers heat island effect, supporting San Jose's climate goals while cutting your AC bills.
What 'GAF Certified Installer' Actually Means for Your Roof
We’re a GAF Master Elite® contractor, which means we’ve passed rigorous training and inspections. That certification lets us offer enhanced manufacturer warranties you can’t get from just any roofer. For your San Jose home, that’s real protection.
Our team installs GAF shingles, underlayment, and ventilation exactly to spec—no shortcuts. That’s why we back every roof with a workmanship warranty and cleanup guarantee. It’s the standard we’ve set over 16 years in the South Bay.
Customer Voice
What San Jose Homeowners Say
We had South Bay Roofing install GAF Timberline HDZ shingles on our Willow Glen Victorian last year. The crew was meticulous, and the roof hasn’t leaked a drop through two rainy seasons. It even survived that big storm in February without a single issue.
— Maria T., Willow Glen
Our Eichler flat in Cupertino needed a complete tear-off, and South Bay Roofing recommended GAF’s Cool Series for energy savings. They were factory-certified, handled the insurance claim from start to finish, and the cleanup was spotless. We’ve already recommended them to three neighbors.
— Dave L., Cupertino
Ready for a GAF Roof That Lasts?
We’ve been installing GAF systems across San Jose for 16 years—from Willow Glen to Cupertino. Get a free, no-obligation estimate from our factory-certified crew. Call (510) 327-8325 or click below to start.