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 Sunnyvale
Roofing work in Sunnyvale runs $450 to $1,900 for most repairs, $9,000 to $22,000 for a full replacement on a standard single-family home, and $2,200 to $5,800 for an Eichler flat or low-slope roof membrane system. The job should be quoted in writing before any work starts, with the permit path and tree-trimming steps laid out on paper alongside the price. Sunnyvale is not a city where a roofer can guess at the scope and fix the number later, because the housing stock here demands two very different skill sets depending on which side of El Camino Real you live on. Call (361) 320-9467 and we’ll come look at your roof and put the real number in front of you.
We’re Brennan Roofing, and our crews work Sunnyvale neighborhoods from Cherryhill and Fairbrae to Ponderosa Park and the older streets around downtown every week. We know the difference between a 1963 Eichler flat roof that needs a membrane system and a 1950s tract house where a shingle tear-off is straightforward. That local knowledge changes the quote, the crew we send, and the tools we load on the truck. The phone at (361) 320-9467 is answered by a live person around the clock, not a voicemail queue.
Key Takeaways
- Sunnyvale flat and low-slope roofs need membrane systems (built-up, modified bitumen, or TPO), not standard asphalt shingles.
- Eichler homes in Cherryhill and Fairbrae have radiant heating pipes in the ceiling; any roof deck penetration without a thermal scan can flood the system.
- Written pricing before work starts is standard on every Brennan job, and it does not move at the door.
- Sunnyvale’s tree preservation ordinance can require permit coordination for trimming and root barriers before a roof job begins.
Why Brennan Roofing Is Sunnyvale’s Preferred Roofing Company
Sunnyvale homeowners call us because we write the price down before any work starts, and that number is the number. No adjustments at the door, no “we found something” add-ons mid-tear-off that weren’t in the original scope. Every technician who arrives on your roof is background-checked and in uniform, so you know exactly who is walking up your driveway and onto your property. That matters in a city where many homeowners have been burned before, often by crews that no-showed or shifted the price once the old roof was already in the driveway.
We operate under the Garrison Standard, which is a defined, named accountability system rather than a vague promise. The Garrison Code means the price goes on paper first, the crew arrives inside the promised window, and every job carries a written guarantee for one full year. If a repair fails inside that year, we come back and fix it at no charge. That’s the 365-Day Done Right Promise, and it’s in writing, not spoken in a sales pitch. Travis Oakley leads Brennan Roofing, and he holds every job to that standard regardless of whether it’s a $450 flashing repair or a $22,000 full replacement.
We answer the phone. A live person picks up around the clock, because a roof that starts leaking during a January atmospheric river doesn’t wait for a callback queue. Sunnyvale’s rain concentrates between November and March, and a small membrane split on a flat roof can become a ceiling stain and a drywall repair inside a week. When you call, you get answers about scheduling, pricing structure, and what the permit process will require for your specific block, not a scripted greeting.
Roofing Contractor in Sunnyvale
A Roofing Contractor in Sunnyvale has to handle two completely different building types that share the same city limits: the mid-century flat and low-slope homes on the north side, and the steep-pitch gable roofs in the older downtown blocks and modern infill. A contractor who only knows asphalt shingles is a liability on an Eichler roof, where the pitch is too low for shingles to shed water properly and the deck may be hiding radiant heating loops. A contractor who only does foam roofs may not know the attic ventilation requirements for a gable roof on a 1920s Victorian near Murphy Avenue. The contractor you hire should be able to explain which system fits your specific roof before they quote a dollar figure.
Membrane Systems for Flat and Low-Slope Roofs
Sunnyvale’s Eichler homes and many 1940s through 1960s tract houses were built with tar-and-gravel or foam roofs on low-pitch decks. Those assemblies are now at end-of-life across Cherryhill, Fairbrae, and the neighborhoods west of Sunnyvale Avenue. The correct replacement is a membrane system – modified bitumen, built-up roofing, or TPO – with a tapered insulation layer that forces water toward drains or scuppers. A typical flat roof replacement in Sunnyvale runs $9,000 to $16,000 depending on square footage, parapet flashing details, and whether the deck sheathing needs repair.
Deck Survey Before Any Fastener Goes In
On any flat or low-slope roof in Sunnyvale’s Eichler tracts, the first step on our jobs is a deck survey that maps the ceiling-embedded radiant heating pipes. These hydronic loops run just under the roof deck in many original Eichler homes, and a single misplaced fastener can punch through a pipe and drain the entire heating system into the living room. We use thermal imaging to locate the loops, then lay out our fastening pattern to avoid them entirely. That map gets documented and handed to the homeowner, because the next contractor who touches that roof deck, skylight, or vent will need it too.
Commercial Roofing in Sunnyvale
Commercial Roofing in Sunnyvale means the low-slope and flat assemblies on the office parks along Mathilda Avenue, the retail centers near El Camino Real, and the older warehouse stock in the industrial districts east of Highway 101. These buildings need the same membrane discipline as an Eichler home, but at larger square footage and with different code requirements for drainage, parapet height, and rooftop equipment penetrations. A commercial roof that ponds water after a winter storm is not just an inconvenience; it’s a structural liability that shortens the life of the entire assembly and can void the manufacturer’s warranty. Sunnyvale commercial roofs typically run $7 to $14 per square foot for a full membrane replacement, depending on the system and deck condition.
TPO and Modified Bitumen for Commercial Decks
Most Sunnyvale commercial buildings get TPO or modified bitumen membranes, occasionally a built-up roof if the building predates the 1980s and the owner wants like-for-like replacement. TPO is white and reflects heat during Sunnyvale’s warm, dry summers, which lowers cooling load on the HVAC. Modified bitumen is tougher against ponding and foot traffic from HVAC technicians. The right choice depends on roof slope, drainage layout, and how much rooftop equipment sits on the deck.
Positive Drainage Is the Whole Point
A flat roof should never actually be flat. It needs slope toward drains, scuppers, or gutters, and on older Sunnyvale commercial buildings that slope often disappeared when the original insulation compressed or the deck settled. A proper commercial roofing quote in this city includes tapered insulation and cricket installation to restore positive drainage, not just a membrane layover that traps water in the same old lows. Cheap quotes skip the taper, and the building pays for it in ponding damage and premature membrane failure.
Trusted Brands We Service in Sunnyvale
We install GAF, Atlas, and Boral systems across Sunnyvale, chosen for how they hold up under the city’s specific conditions: wet winters with occasional atmospheric river downpours, long dry summers with intense UV on flat surfaces, and the rare freeze that causes thermal shock on aging materials. GAF modified bitumen cap sheets are our standard on Eichler flat roofs, Atlas shingles cover the gable-roof tracts south of El Camino, and Boral tile appears on the newer infill and replacement jobs where the homeowner wants a 50-year material. We stock common flashing, underlayment, and membrane accessories locally so a Sunnyvale repair does not wait on a parts shipment from out of state.
Common Roofing Company Problems We See in Sunnyvale Homes
- Ponding on flat and low-slope roofs. The original tar-and-gravel and foam assemblies on 1940s and 1950s tract homes have lost their slope, and water sits after winter storms. The fix is a tapered insulation layer and a membrane system, not another coat of coating.
- Membrane splits from UV exposure. Sunnyvale’s long dry summers bake flat roofs for months without rain, and older built-up roofs crack along seams and at penetrations. A split that looks small in August becomes a leak path by January.
- Radiant heating pipes hit by fasteners. In Cherryhill and Fairbrae Eichlers, roofers who don’t scan the deck before nailing can puncture the ceiling-embedded hydronic loops. That’s a cosmetic-to-catastrophic failure in one misplaced screw.
- Tree-related roof and gutter damage. Sunnyvale’s dense urban forest means overhanging canopies across the city, and the tree preservation ordinance restricts trimming without permits. Failing to coordinate that clearance before a job stalls the tear-off mid-project.
Pricing for Roofing Company in Sunnyvale, CA
Sunnyvale roofing prices reflect the split housing stock. Standard asphalt shingle tear-off and replacement on a gable-roof tract home runs $11,000 to $18,000 for a typical 1,500 to 2,200 square foot roof. Flat or low-slope Eichler membrane replacement runs $9,000 to $16,000, plus another $1,800 to $4,000 if the deck sheathing is rotted or the radiant pipe map reveals fastening conflicts. A repair – flashing, a membrane patch, a shingle section, a vent boot – lands between $450 and $1,900 for most Sunnyvale homes. Commercial membrane systems run $7 to $14 per square foot. Factors that move the number: roof pitch and access, deck condition, the number of penetrations and parapet walls, whether the tree-trimming permit is already in hand, and whether the job triggers the city’s tree preservation ordinance. Call (361) 320-9467 and we’ll give you a written price before any work starts, with no charge for the estimate.
We Also Serve Cities Near Sunnyvale
Brennan Roofing works Sunnyvale and the surrounding cities of Mountain View, Santa Clara, Cupertino, and Los Altos. If your roof is just across the city line, the same written pricing, background-checked crews, and one-year guarantee apply. We’re the Roofing Company homeowners call when they want the number on paper before the tear-off starts, whether the job is in Sunnyvale proper or ten minutes down the road.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
Yes. Any Sunnyvale roof with a pitch below about 2:12 cannot shed water fast enough for asphalt shingles to work, so the correct system is a built-up roof, modified bitumen, or TPO membrane. In Eichler neighborhoods like Cherryhill and Fairbrae, the original flat roofs were designed for membrane systems, and putting shingles on them creates chronic leaks along the low sections. A membrane replacement with a tapered insulation layer for positive drainage is the right fix. Call (361) 320-9467 and we’ll confirm your roof’s pitch and quote the correct system for the deck you actually have.
Your roof meets the requirement when the fastening pattern, underlayment, and edge details are installed to the manufacturer’s specification for the wind-load rating, and that installation is documented with photos, permits, and the inspector’s sign-off. In Sunnyvale, wind damage claims after winter storms often hinge on whether the roofer followed the rated fastening schedule for the membrane or shingle system, because cheap installs skip fasteners and the whole assembly peels. We document the fastening pattern on every job, pull the permit, and pass the inspection, so you have the paper trail your insurer will ask for. Call (361) 320-9467 for a written quote that includes the permit and documented fastening spec.
Yes, by mapping the pipes before any fastener goes into the deck. In Cherryhill and Fairbrae Eichlers, the original radiant heating loops run just under the roof deck, and a roofer who nails through one floods the system. We use thermal imaging to locate the loops, then lay out the fastening pattern around them and document the map for you and any future contractor. We tore off a failed tar-and-gravel flat roof on a Cherryhill Eichler once and found the original pipes running exactly where the old roofer had nailed straight through. We brought in a thermal scan, laid out every fastener around the loops, rebuilt the assembly with tapered insulation, a GAF modified bitumen cap sheet, and ice and water shield at every penetration, and handed the owner a documented pipeline map. Call (361) 320-9467 if you own an Eichler and want the survey done before the quote is written.
A standard roof replacement in Sunnyvale requires a building permit with roof assembly details, plus a tree-trimming permit if any overhanging canopy from the city’s protected urban forest has to be cut back for access. Sunnyvale’s tree preservation ordinance restricts trimming on many mature trees, and a roofer who ignores it can stall the job mid-tear-off when the city flags the work. Our quotes list the permit path, the tree clearance scope, and any root barrier coordination as a written line item, so there is no surprise stop-work order. Call (361) 320-9467 and we’ll walk the site and tell you exactly what the permit office will need for your block.
Compare them by checking whether each bid includes the permit, the tree-trimming clearance, the deck survey for radiant pipes on an Eichler, the tapered insulation for positive drainage on a flat roof, and a written fastening spec that meets wind-load rating. A cheap bid that leaves those out is cheaper on paper and more expensive in reality, because the permit gets pulled later or the deck gets punctured or the insurance claim gets denied. Also compare whether the price is in writing before work starts, because a roofer who shifts the number at the door has already told you how the job will go. Call (361) 320-9467 and bring us the other bid; we’ll walk you through the line items and tell you what’s missing.
Written by Travis Oakley, Owner at Brennan Roofing, serving Sunnyvale and the wider San Francisco Bay Area.