Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roofing Company Across Sunnyvale
Sunnyvale homeowners call a Roofing Company when a leak shows up, when a re-roof can’t wait another season, or when a Title 24 cool-roof requirement complicates what looked like a simple tear-off. We’re Mercer Roofing, and we work on the ranch homes, Eichlers, and flat-roof assemblies that make this city’s housing stock different from anywhere else in the South Bay. A leak on a 3:12 pitch behaves differently than a leak on a 6:12 pitch, and we’ve been on enough Sunnyvale roofs to know exactly what that means for the repair. Call (743) 200-8347 and a live person answers, day or night.
Why Mercer Roofing Is Sunnyvale’s Preferred Roofing Company Company
We earned trust in Sunnyvale the slow way, one roof at a time. Homeowners in Lakewood, Borregas, Birdland, and the ranch neighborhoods south of El Camino Real keep our number because they know who’s coming to the door. Before any technician arrives, you get their name and photo. They pull up in a marked vehicle, wear a clean uniform, and show you a photo ID badge before they step inside or climb a ladder. That’s the Threshold Verified standard, and it’s on every visit, no exceptions.
Part of the Threshold Group family since 2000, each Mercer location is independently owned and operated. Grant Whitlock leads our team, and he holds every job to the same standard: a written price before work starts, a written guarantee on every repair, and a 365-Day Done Right Promise. If it’s not right within a year, we make it right. We don’t ask Sunnyvale homeowners to take that on faith. It’s in writing.
Free Roof Estimate in Sunnyvale
A Free Roof Estimate in Sunnyvale gives you a line-by-line scope and a hard number before anything gets torn off. We walk the roof, check the decking from the attic, verify the pitch, look at the flashing and penetrations, and check whether the existing assembly meets current Title 24 cool-roof thresholds. On Sunnyvale ranch homes from the 1950s through 1970s, that last step matters more than most roofers admit. A typical inspection and estimate visit for a standard Sunnyvale ranch runs $0, and the written estimate includes the full scope: material, tear-off, haul-away, decking repair allowance, underlayment, flashing, and Title 24 documentation.
What the estimate covers
We scope the whole job before quoting. That includes checking the nailing pattern your low-slope deck actually needs, verifying CRRC product ratings for the shingle or membrane you want, and flagging any rot near penetrations. If decking looks questionable, we note it as a per-sheet line item so the final invoice matches the quote.
When a Sunnyvale homeowner should schedule
Spring is the busiest season, and Sunnyvale’s dry summers create a long working window. But the best time to schedule an estimate is before a small leak becomes a decking problem. North-facing low-slope sections collect moss through the winter fog cycle. If you see green streaking on the shingles, get the estimate now. It’s free, and you’ll know exactly where you stand.
Roofing Contractor in Sunnyvale
A Roofing Contractor in Sunnyvale needs to understand what’s actually under the surface on this city’s homes. We’ve torn off original built-up gravel roofs, re-decked rotted sheathing, and rebuilt shallow-pitch assemblies that out-of-area crews misquoted. When you hire Mercer, you get a contractor who shows up with a written scope, installs exactly what was quoted, and stands behind it for 365 days.
Local permitting the right way
Sunnyvale’s building department enforces California Title 24 cool-roof mandates at permit submittal. If a tear-off disturbs more than a small roof area, the materials must meet minimum solar reflectance and thermal emittance ratings, with CRRC data sheets attached to the permit. We handle that documentation before we pull the permit, not after. A common failure: a generalist roofer quotes an architectural shingle that doesn’t meet the reflectance threshold, gets to submittal, and has to swap materials on a roof that’s already torn off. We check the product ratings first.
Working on acreage and odd lots
Sunnyvale has lots that look like a normal suburban street until you get behind the house. Some properties back up to open space, and a few larger parcels on the city’s edges feel more like county work than city work. That changes logistics: where the debris trailer parks, how far the crew hauls material, whether grading or drainage affects the roof perimeter. We scope those access and material-handling realities before quoting, so the number you see is the number you pay.
Trusted Brands We Service in Sunnyvale
We install and repair the brands Sunnyvale homeowners actually ask for: GAF, Atlas, and Tamko are the most common on re-roofs here, and we stock matching accessories locally so a repair doesn’t wait on a warehouse order. For Eichler flat roofs in Borregas and Lakewood, we source modified-bitumen and spray-foam systems rated for the Title 24 documentation Sunnyvale requires. If your existing roof carries a manufacturer warranty, we verify what the work does to that coverage before we start, in writing.
Common Roofing Company Problems We See in Sunnyvale Homes
- Original built-up gravel roofs on ranches. Many Sunnyvale homes built between 1955 and 1975 still carry the original tar-and-gravel assembly. When the gravel wears thin and the bitumen dries out, leaks start at the plumbing penetrations and the perimeter where the roof meets the fascia.
- Title 24 cool-roof compliance caught too late. A crew tears off the roof, the permit reviewer asks for CRRC reflectance data, and the shingle that was quoted doesn’t pass. Now the homeowner pays for a material change and a delay. We verify product ratings before the tear-off date is set.
- Moss and algae on north-facing low-slope sections. Sunnyvale’s winter fog cycle keeps north-facing roof planes damp well into the morning. Combined with afternoon heat in the 90s in summer, that cycle strips granules from composition shingles and feeds moss growth. Standard underlayment and non-algae-resistant shingles streak within three years.
- Wind-related failure at the ridge and flashing. Architectural shingles on 2:12 to 4:12 decks need a six-nail pattern to meet high-wind ratings. Shallow-pitch Sunnyvale roofs expand and contract through the daily thermal swing, and a four-nail job starts lifting at the ridge within a few seasons.
Pricing for Roofing Company in Sunnyvale, CA
Here are real ranges for Sunnyvale’s market, based on what we quote on this city’s dominant housing stock. A standard architectural shingle re-roof on a 1,500 to 2,000 square foot ranch runs $18,000 to $28,000, depending on decking repair, tear-off layers, and Title 24 product choices. A flat or low-slope modified-bitumen system on an Eichler in Borregas or Lakewood runs $24,000 to $38,000. A simple repair, like replacing a plumbing boot or sealing a flashing seam, runs $450 to $1,200. Decking replacement adds $2.50 to $4.50 per square foot when rot is found. Every quote is written, line-itemed, and locked before work starts. Call (743) 200-8347 for a free estimate.
We Also Serve Cities Near Sunnyvale
We work throughout the South Bay, including Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re on the Sunnyvale border and your roof is just over the line, we’ll still come out. The same Threshold Verified standards apply on every visit, wherever the job is.
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, Sunnyvale enforces California Title 24 cool-roof requirements at permit submittal. For any tear-off beyond a small repair area, you must submit CRRC-rated product data sheets showing the material meets minimum solar reflectance and thermal emittance thresholds. We attach those sheets to the permit before it’s filed, and we verify the product rating before quoting so the shingle you pick actually passes. Call (743) 200-8347 if a contractor has told you otherwise, we’ll walk you through what Sunnyvale’s building department actually asks for.
We do that work directly. Flat-roof Eichlers need a modified-bitumen or spray-foam assembly, not standard shingles, and we’ve scoped and installed both on homes in Lakewood and Borregas. The Title 24 documentation for these assemblies is different than for shingle roofs, and we handle it at permit submittal. Our crew has torn off original built-up gravel roofs on these homes and re-built the assembly to pass Sunnyvale inspection on the first visit. Get a free estimate at (743) 200-8347.
A larger lot changes access and material handling more than it changes the roof itself. If the home sits far back from the street, or the rear roofline is hard to reach, the crew hauls materials farther and may need a debris trailer in a secondary position. That adds labor time, and outbuildings, detached ADUs, or shop roofs on the same parcel are quoted separately. We scope those access realities before we quote anything, so the written price reflects the actual job, not a square-footage guess. Call (743) 200-8347 for a quote that includes your whole parcel.
If the gravel is thinning and you can see exposed bitumen, the roof is already past its service life. Sunnyvale’s 1950s through 1970s ranches carried built-up gravel roofs that were rated for 20 to 25 years, and most are now into their third decade of overstay. The failure isn’t sudden, it shows up as damp spots at the perimeter, staining at penetrations, and a spongy feel when you walk the deck. Once decking gets wet, the repair cost grows quickly. Schedule a free estimate and we’ll tell you if the decking is still sound. Call (743) 200-8347.
Sunnyvale’s marine-influenced microclimate keeps north-facing roof planes damp through winter morning fog, and moss takes hold on shaded low-slope sections before the afternoon sun burns it off. Then summer heat in the 90s dries the moss into a crust that holds moisture against the shingle granules and accelerates stripping. Standard shingles without algae-resistant granules streak within three years on these exposures. We install algae-resistant products rated for this climate and verify ventilation so the damp cycle doesn’t shorten the roof’s life. Call (743) 200-8347 and we’ll check your north slope.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Sunnyvale since 2000.