Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roof Repair Across Sunnyvale
Roof repair in Sunnyvale usually runs between $450 and $1,600 for common fixes like shingle replacement, valley repair, and vent boot work, and most jobs wrap up in a single day once we’re on the roof. The bigger cost driver here isn’t labor, it’s which roof assembly your house has. Homes west of El Camino Real tend to be wartime and early-1960s tract builds with skip sheathing, while the neighborhoods east of the line are mostly 1990s and 2000s two-story homes built under the city’s pre-2010 cool-roof code. Our crews know both sides of that divide, and we scope every Sunnyvale job in person before quoting. Call Crestview Roofing at (325) 246-5075 and a live person answers, any hour, any day.
Why Crestview Roofing Is Sunnyvale’s Preferred Roof Repair Company
Dylan Pace founded Crestview Roofing in 2000, and the company has operated under one rule since day one: the number on the written quote is the number on the invoice. Sunnyvale homeowners tell us that’s the main reason they call us back for Roof Repair work, and it’s why our local reputation holds up year after year. Every repair comes with a written price before we start, photo documentation before and after the work, and a live arrival time you can track from your phone. That’s the Relay Standard, and it’s not a marketing line. It’s how we run every job, including yours.
Our Sunnyvale customers also know the 365-Day Done Right Promise, in writing on every repair. If a repair fails within a full year, we come back and fix it at no charge. No negotiation, no runaround. Background-checked, uniformed technicians show up in marked vehicles, so you always know who’s at your door before you open it. We work with GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral materials, so the product under your roof is never a question mark. Dispatch for Sunnyvale is coordinated from our San Francisco Bay Area office, with crews serving the city locally.
Metal Roof Repair in Sunnyvale
Metal roof repair in Sunnyvale typically runs between $600 and $2,400 depending on whether we’re replacing seam fasteners, patching a panel, or re-flashing a penetration. Sunnyvale’s mix of commercial metal buildings along Wolfe Road and low-slope metal patio covers on older homes means we see two distinct failure patterns: worn neoprene washers on standing-seam fasteners, and failed lap sealant on exposed-fastener panels. Both leak quietly and show up as a stain long after water has been moving under the metal.
Fastener And Seam Work
Standing-seam metal roofs hide their fasteners, and on Sunnyvale’s 1960s-era metal buildings those fasteners were often tightened once at install and never touched again. Thermal cycling opens the gaps over decades, and the neoprene washers turn brittle and crack. We walk the entire roof surface, tighten or replace fasteners, and reseal seams with a manufacturer-specified lap sealant. A metal roof that’s still structurally sound usually just needs this maintenance, not replacement.
Metal Penetration Flashing
Pipe boots, curb flashings, and exhaust fan stacks on metal roofs fail at the joint where the metal meets the sealant. On Sunnyvale’s flat and low-slope metal roofs, standing water around a penetration is the usual culprit, and that’s where we fix it: strip the old sealant, repair the metal if it’s pitted, install a new boot or curb flashing, and seal it with a product rated for the roof’s exact panel profile. A good metal penetration repair should last longer than the roof around it.
Commercial Roof Repair in Sunnyvale
Commercial roof repair in Sunnyvale spans a very wide range, $900 for a small TPO patch on a flat roof to $8,500 for a full metal panel replacement on a low-slope commercial building. The industrial and office parks clustered along Lawrence Expressway and Mathilda Avenue include TPO, EPDM, modified bitumen, and metal systems, and each one fails differently. We send a commercial crew that works around your business hours, and our written quote includes a scope of work that a building owner or facilities manager can hold us to. No change orders unless you approve them first, in writing.
Flat Roof Leaks On Commercial Buildings
Most commercial flat roof leaks are not roof-wide problems, they’re a torn seam, a failed pitch pocket, or water ponding at a scupper that’s working its way under the membrane. We locate the actual breach, open it, dry the deck if needed, and patch it with material that matches your existing system. If the deck is soft or the insulation is saturated, we’ll tell you before we close it up, with a price for the additional work. No surprises, no opening a five-foot hole and telling you it’s a full re-roof.
Metal Commercial Roof Repair
Commercial metal roofs in Sunnyvale usually fail at fasteners, ridge caps, and penetrating curbs, much like residential metal, but the scale is bigger and the stakes are higher because an undetected leak can shut down a tenant space. We walk your entire roof and give you a photo report with every area we recommend repairing, each item priced individually. You decide what gets fixed now and what gets monitored.
Trusted Brands We Service in Sunnyvale
We install and repair shingles and underlayment from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, and we keep a running inventory of the most common Sunnyvale matches on our trucks. GAF Timberline HDZ architectural shingles are a frequent call here because so many 1990s and 2000s Sunnyvale homes were originally roofed with Timberline, and we can match the color profile without waiting on a special order. For older tract homes, Atlas Pinnacle Pristine or CertainTeed Landmark often blend better with the original three-tab field. We stock what Sunnyvale re-roofs with, so material lead time rarely holds up your repair.
Common Roof Repair Problems We See in Sunnyvale Homes
- Skip sheathing sag and telegraphing: Wartime-era Sunnyvale tract homes often have spaced skip sheathing under the shingles, and when an installer nails new underlayment straight to those gaps, the shingle field sags and leaks within a season. We add 7/16 OSB over the skip sheathing to create a flush deck before any new underlayment goes down.
- Silicone patches over valley and chimney flashing: We’re called repeatedly to post-1990 two-story Sunnyvale homes where the upper roof dumps water onto the lower roof at a valley, and someone tried to “fix” the leak by smearing silicone over failing metal. It never lasts. The fix is new metal, ice and water shield under it, and a properly overlapped seam.
- Flat roof additions with pitched-roof nails: Sunnyvale’s rear additions from the 1980s and 1990s often have low-slope roofs that get re-nailed as if they were pitched. Without double underlayment and a proper ridge vent, these additions are where most of our local callbacks originate.
- Pipe boot cracks on 50-year-old vent stacks: A cracked pipe boot at a plumbing vent is one of the most common sources of hallway and ceiling stains in Sunnyvale’s older homes, and it’s a quick, affordable fix, $450 to $700 when the deck underneath is still solid.
Pricing for Roof Repair in Sunnyvale, CA
For most single-family homes in Sunnyvale, you should expect: shingle replacement runs $450 to $900 for a small section, valley repair $700 to $1,400, flashing repair around a chimney or skylight $600 to $1,200, vent boot replacement $450 to $700, flat roof patches $800 to $1,800, and metal roof repair $600 to $2,400 depending on the panel profile and number of penetrations. The biggest wildcard is deck condition. If we pull the drip edge and find soft fascia or rotten decking near the rake, that adds material and labor, but we’ll show you photos and quote the additional work before we proceed. Every job gets a written price before any work starts, and the estimate is free. Call (325) 246-5075 to schedule yours.
We Also Serve Cities Near Sunnyvale
Our crews cover Sunnyvale plus Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re just over the city line, the same written-price promise, photo documentation, and 365-Day Done Right Promise apply. Call us and we’ll route the nearest Sunnyvale crew to your address.
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 Roof Repair in Sunnyvale
Most repairs in Sunnyvale do not trigger a permit, but the city’s pre-2010 cool-roof requirements can change that depending on the size and location of the repair. As a rule of thumb, we pull permits and schedule inspections when required for any work that exceeds a repair threshold or involves structural changes. We’ll tell you exactly what the City of Sunnyvale requires for your specific roof, and we pull all permits ourselves when they’re needed.
Most Sunnyvale repairs take half a day to one full day on the roof once materials are on site. A pipe boot replacement or small shingle section takes two to three hours. A valley repair with new metal and ice and water shield takes five to six hours. If we find deck damage that needs replacement, that adds a day, and we’ll give you a revised written scope before we do the extra work. Call (325) 246-5075 and we’ll give you a realistic calendar for your specific roof.
Yes. Most 1990s and 2000s Sunnyvale homes were roofed with GAF Timberline architectural shingles, and we stock the common colors locally. For older three-tab fields, we can often match with Atlas Pinnacle Pristine or CertainTeed Landmark, and we’ll bring sample boards to your house so you can see the match in full sun before any material is ordered. We’ll give you a written price for the matched repair before work starts.
The most common price change on a Sunnyvale roof is deck condition. When we pull drip edge or shingles at the repair area and find rotten plywood, soft fascia, or skip sheathing that needs OSB overlay, we document it with photos and give you a written quote for the additional scope before we proceed. We do not do change orders by surprise. Everything is approved by you, in writing, before extra work begins. You’re never on the hook for a number you didn’t see first.
We repair both. Our commercial crews work on TPO, EPDM, modified bitumen, and metal commercial roofs throughout Sunnyvale, including the office and industrial parks along Lawrence Expressway and Mathilda Avenue. We also handle residential metal patio covers and standing-seam metal roofs. Every commercial repair gets a written scope, photo documentation, and the same 365-Day Done Right Promise as our residential work. Call (325) 246-5075 to schedule a free commercial estimate.
Written by Dylan Pace, Owner at Crestview Roofing, serving Sunnyvale since 2000.