Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roofing Company Across San Jose
Brennan Roofing is a Roofing Company serving homeowners throughout San Jose, with crews that know the city’s roof problems street by street. If you’re dealing with a leak, missing shingles, or a roof that’s simply at the end of its service life, call us at (361) 320-9467 for a free estimate. We write the price down before any work starts, and the number on that paper does not move. That’s the Garrison Standard, and it applies to every roof we touch in San Jose.
San Jose is not one climate. It’s several. A roof in Alviso fights salt fog while a roof in Evergreen bakes under foothill sun, and a roof in Naglee Park sits on a 1910s frame that predates modern seismic code. You need a roofing crew that understands the difference. We do, because we work here.
Why Brennan Roofing Is San Jose’s Preferred Roofing Company Company
Homeowners in San Jose call us for the same reason they don’t call the cheapest bid: they want a roofer who shows up, names a price, and stands behind the work. Every Brennan Roofing technician is background-checked and uniformed. You’ll know who’s on your roof before they climb the ladder. Our crews handle tear-offs, replacements, repairs, and inspections across San Jose, from Willow Glen bungalows to East Side tract homes.
Travis Oakley leads our team with a simple rule: if a job isn’t done right, we come back and make it right. That’s not a slogan. It’s written into the 365-Day Done Right Promise, a one-year guarantee on every repair and installation we complete. If something fails within that year, the return visit costs you nothing. San Jose homeowners hear that and know exactly where we stand.
We answer the phone with a live person, around the clock. Not a voicemail tree. Not an automated system. When a storm rips flashing off a roof in the middle of the night, you talk to a human being who can schedule a crew.
Free Roof Estimate in San Jose
A Free Roof Estimate in San Jose means one of our technicians climbs the roof, checks the decking, flashing, underlayment, and drip edge, and puts a written price in your hand before any work begins. You’ll get the number on paper. No verbal ballpark, no “we’ll see when we get up there.” The estimate accounts for your roof’s slope, the existing material, and the microclimate where your home sits.
The estimate is free, and it comes with specifics. We tell you what materials we’d use, why we’d use them, and what the tear-off and haul-away costs. You’ll know the full scope before you decide anything.
What We Check During the Estimate
We walk the entire roof surface, not just the spot you pointed at. We check valleys, penetrations, ridge caps, and the condition of the flashing around chimneys and vents. In San Jose’s fog-adjacent neighborhoods, we look hard at fastener corrosion, because that’s what fails first near the bay.
Written Price, No Door Pressure
The price we hand you is the price you pay. We don’t come back with a change order after we tear off the old shingles. If we find rot in the decking, we show you, explain it, and give you a new number before we touch anything else. You decide. We don’t upsell.
Roofing Contractor in San Jose
As a Roofing Contractor in San Jose, Brennan Roofing handles full replacements, targeted repairs, and annual inspections. We install asphalt shingles from GAF, CertainTeed, and Owens Corning, plus metal, tile, and flat roofing systems. Every job starts with a written price and ends with a one-year guarantee in writing.
San Jose’s mix of housing stock means we’re on a 1906 Victorian one week and a 1970s ranch the next. The technical requirements differ. The standard doesn’t.
Full Replacement and Tear-Off
A full replacement means tearing off the old material down to the decking, checking the wood for rot or termite damage, and installing new underlayment, drip edge, and shingles. In older San Jose neighborhoods, we often find multiple layers of roofing. Each layer adds weight and hides problems. We remove them all.
Repairs Rooted in Local Failure Patterns
We repair what actually breaks in San Jose, not what breaks in a textbook. Corroded fasteners near the bay. Cracked decking from minor quakes. Ember-intrusion gaps in the foothills. When we patch a roof, we fix the cause, not just the visible symptom.
Trusted Brands We Service in San Jose
We install and service roofing systems from GAF, CertainTeed, and Atlas, because these manufacturers produce shingles that hold up under the specific demands of San Jose’s microclimates. CertainTeed Landmark architectural shingles perform well in fog zones where algae and salt moisture sit on the roof surface. GAF’s Timberline line carries strong wind ratings, which matters when the winter storms roll down from the Santa Cruz Mountains. We keep fast turnaround on material sourcing for San Jose customers, because we maintain relationships with local suppliers and know what’s in stock.
Common Roofing Company Problems We See in San Jose Homes
- Salt-induced fastener corrosion near the bay: In Alviso and North San Jose, standard galvanized nails lose their heads within five to seven years of salt fog exposure. The shingle looks fine, but the roof is quietly peeling apart from underneath, and you won’t know until a storm blows a section off.
- Seismic flex damage: Rigid, over-nailed decking can’t absorb the minor ground movement that the Hayward and Calaveras faults produce. Micro-cracks open in the decking, water finds them, and the ceiling stain appears months later, far from the actual breach.
- Wildfire code gaps in the foothills: Homes in Evergreen and Almaden Valley now fall under wildland-urban interface codes that require Class A roof assemblies and ember-resistant vents. Cheap composite shingles fail inspection, and insurance carriers are starting to deny renewals over them.
- Rotting redwood shingle underlayers in historic districts: Naglee Park bungalows often carry original redwood shingle decking under two or three layers of asphalt. The redwood holds moisture, the asphalt traps it, and rot spreads invisibly. A proper tear-off is the only real fix.
Pricing for Roofing Company in San Jose, CA
Roofing prices in San Jose run higher than the national average because the specs run higher. A basic asphalt shingle replacement in San Jose typically lands between $11,000 and $19,000 for a 1,500-square-foot roof, depending on slope, tear-off layers, and the hardware spec. Coastal-spec work with Type 316 stainless fasteners and marine-grade flashing adds roughly $1,800 to $3,200 to the same job, which is the cost of not redoing the roof in a decade. Repairs run $450 to $2,400 depending on scope. Tile roofs push replacement costs to $24,000 to $40,000 plus. The free estimate gives you the exact number for your roof.
Skip the stainless near the bay and you’ll pay for it again. The cheap spec costs more within ten years. We’d rather give you the honest number up front. Call (361) 320-9467 for your written estimate.
We Also Serve Cities Near San Jose
Our crews run jobs in Milpitas, Santa Clara, Sunnyvale, and Campbell. If you’re in one of those cities, you get the same written price, the same background-checked technicians, and the same one-year guarantee. For a deeper look at what we do, see our Roofing Company service page, and for more on how we work in this area, visit Roofing Company in San Jose.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roofing Company in San Jose
If your home sits in a bay-adjacent neighborhood like Alviso or North San Jose, yes. Salt-laden fog corrodes standard galvanized fasteners within five to seven years, long before the shingle itself wears out. We specify Type 316 stainless or hot-dip galvanized hardware on every fog-belt job. Inland homes in the Evergreen foothills don’t face the same corrosion, but they face different requirements. Call (361) 320-9467 and we’ll tell you which spec applies to your address.
San Jose sits near the Hayward and Calaveras faults, so your roof needs to flex slightly without cracking. Over-nailed or rigidly fastened decking fails under micro-movement, and the water intrusion that follows usually shows up as a ceiling stain far from the actual crack. We install decking and fasteners with the right give for local seismic conditions, and we look for stress cracks during every inspection. A free estimate call at (361) 320-9467 is the fastest way to find out if your roof has movement damage.
Near the bay, you want shingles rated for coastal exposure and algae resistance, like CertainTeed Landmark or GAF Timberline, paired with corrosion-resistant fasteners. In the hot, dry eastern foothills, you want materials with high solar reflectance and, increasingly, Class A fire ratings to meet WUI code. One roof does not fit every San Jose ZIP code. We’ll tell you which one fits yours.
The honest answer is usually no. Redwood shingle decking under layers of asphalt has typically been trapping moisture for decades, and the rot spreads invisibly from the inside. We will show you the condition after tear-off and give you options before any work proceeds. In the Naglee Park job we mentioned earlier, the original redwood decking was too far gone to save, but we preserved the home’s roofline and installed a historically appropriate asphalt shingle that reads correctly from the street.
A square is 100 square feet of roof surface, and it’s the unit roofers use to price materials and labor. Your quote will show a cost per square, plus tear-off, decking, flashing, and disposal. Don’t be alarmed if the square count on your quote is higher than your home’s floor area; roofs have slope and overhangs that add surface. Ask us to walk the square count with you during the estimate, and we will.
Written by Travis Oakley, Owner at Brennan Roofing, serving San Jose with written prices, background-checked crews, and the 365-Day Done Right Promise on every job. Call (361) 320-9467 for your free estimate.