Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
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Before
AfterFast, Reliable Roof Repair Across Davis
A roof leak in Davis never announces itself politely. It shows up as a brown ring on the ceiling after a January storm, or a slow drip near the chimney that you notice only when Tule fog has been sitting on the roof for three days straight. We’ve repaired thousands of Davis roofs since 2000, and we know the failure patterns this city produces. Shingle brittleness from 105°F summers. Algae eating the granule bed on north-facing slopes. Solar rack penetrations that were never sealed correctly after a panel removal. When you call Mercer Roofing, you get a written price before any work starts, a technician whose name and photo arrive on your phone before the visit, and a repair covered in writing for 365 days. Call (743) 200-8347 and a live person answers, 24/7.
Why Mercer Roofing Is Davis’s Preferred Roof Repair Company
Davis homeowners tend to be specific about what they want. They read the fine print. They ask about the flashing, the underlayment, the warranty terms. That suits us. We’ve built our Davis reputation on sending background-checked technicians who badge in with a photo ID at the door, under the Threshold Verified standard. Every Mercer technician is identity-verified, uniformed, and dispatched under the Threshold Group quality framework, which each independently owned location is held to contractually. You’ll know the name and face of the person walking up your driveway before they ring the bell.
Our crews work Davis neighborhoods every week, from the 1970s tract subdivisions east of Highway 113 to the rental stock near campus. That means we stock the materials Davis homes actually use rather than ordering everything out of a distant warehouse. Need a vent boot matched to a 1982 composition roof near Slide Hill Park? We likely have it on the truck. Need a flat-roof patch on a low-slope apartment building off Russell Boulevard? Our Roof Repair team handles membrane, torch-down, and modified bitumen work regularly. And when a winter storm puts a tree limb through a roof deck in Dixon or a valley corner opens up in Winters, we route crews accordingly. Our Sacramento office coordinates dispatch, but the technicians who show up in Davis live in this region and know these roof planes.
Grant Whitlock leads Mercer Roofing, and he holds every job to the 365-Day Done Right Promise: if the repair is not right within a year, we make it right. Written guarantee included with every repair. Free second visit if the repair fails. Most Davis homeowners we meet have dealt with a roofer who fixed the symptom and ignored the cause. Our pricing structure exists to prevent that from happening again. A written line-item quote, agreed before any nail is driven, means the scope is real and the price is real.
Commercial Roof Repair in Davis
Commercial Roof Repair in Davis is a different discipline from residential work, and the density of flat and low-slope buildings makes this city an unusual market in Yolo County. The apartment stock near UC Davis, the office parks along Research Park Drive, the retail pads along East Covell and West Eighth – these roofs are mostly membrane systems: TPO, EPDM, modified bitumen, built-up. They fail at the seams and flashings, not in the field. A poorly sealed penetration around an HVAC curb after a sunny July and a wet January is the classic Davis commercial roof story, and it’s not a repair a typical shingle crew should attempt.
Davis commercial roof repairs on membrane systems typically run $900 to $2,800 for localized seam failures, curb-flashing replacements, and drain-collar repairs. Larger scopes – say, recoatings or a full section layover – start to behave like small installations and are priced with full written plans rather than an hourly patch. Every commercial repair gets the same our-Davis guarantee: written quote first, written repair warranty after.
Low-Slope Leak Tracing Near Campus
Many Davis apartment buildings near campus were built in the same 1960s-80s window as the single-family tracts, but their flat roofs age on a different schedule. We trace leaks on these systems with flood tests and seam probes, not guesswork. If we open a seam and find wet insulation, that’s documented in writing and priced before the repair proceeds.
Penetration and Curb Flashing Failures
On Davis commercial roofs, the most reliable failure point is anywhere a pipe, vent, skylight, or HVAC curb meets the membrane. We repair these with compatible materials matched to the existing system, not a mismatched patch. A matched TPO repair on a TPO roof lasts; a mismatched caulking job fails next season. That’s why our commercial repairs include a written 365-day guarantee as standard.
Roof Leak Repair in Davis
Roof Leak Repair in Davis is our most common call, and it usually begins long before a homeowner sees water inside. The leak path on a Davis house is rarely where the stain appears. We’ve traced a dripping light fixture in North Davis to a failed nail pop fifteen feet upslope. We’ve found ceiling stains in Central Davis townhouses coming from an entirely different roof plane than the one the homeowner assumed. Leaks in this climate follow the path of least resistance through aged underlayment, old flashing, and dried-out sealant, and only an on-roof inspection will identify the real source.
A leak repair on a standard Davis composition roof typically runs $300 to $750 for a localized flashing or vent-boot fix, and $650 to $1,400 when we’re pulling shingles, replacing water-damaged decking, and re-laying underlayment. The broader the water has spread beneath the shingle field, the more surface area we need to open, and Davis’s summer UV cycles have a way of spreading hidden damage wide. Every leak repair gets a written price and a written 365-day repair guarantee. If a leak on a Davis roof with solar panels is involved, the array usually has to come into play, and we coordinate that carefully.
Solar Array Leak Repairs in Davis
Davis has one of the highest per-capita residential solar installation rates in California, and that’s not a statistic to us – it’s a daily field condition. Nearly every reroofing job here requires coordinating around, temporarily removing, or working beneath an existing solar array. That means we photograph every penetration before we touch a shingle. If a mount lag bolt has pulled out of an aging rafter, that’s the leak source, and simply caulking the visible gap will fail within a year. We re-flash each penetration properly, replace any compromised underlayment beneath it, and communicate with your solar installer if reinstallation timing is involved. This step is the exception in Woodland or West Sacramento, but on a Davis roof it is essentially standard practice.
Valley and Flashing Repair on Aging Tract Homes
Most Davis tract homes built in the 1960s through the 1980s are now aging out of their original composition shingles all at once, which means the flashing that protected the roof’s valleys, chimneys, and walls has also reached its service limit. We replace rusted-through valley flashing, lift and re-bed step flashing at wall lines, and re-lay membrane along eave lines before they become an interior leak. The written quote you receive before we start is the same price you pay when the job is done, even if opening the roof reveals more than expected – that’s handled through inspection-first scoping and written allowances, not a surprise change order at the door.
Trusted Brands We Service in Davis
Mercer Roofing installs and repairs shingle brands that Davis homeowners and their insurance carriers actually recognize: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Davis’s climate, we often recommend high-solar-reflectance lines from CertainTeed and GAF because they hold up measurably better under the Yolo County sun. We keep matching stock and common repair materials for these brands in our local supply chain, which means a repair that needs a specific shingle color or profile doesn’t stall waiting on a special order. The result is a faster turnaround and a repair that blends with the existing roof instead of announcing itself as a patch.
Common Roof Repair Problems We See in Davis Homes
- Solar-panel mount leaks on re-roofed houses. Davis’s residential solar density is enormous, and we regularly find arrays that were removed and reinstalled during a previous roof job without proper re-flashing of the penetrations. The lag bolts back out through brittle underlayment, and every wet season turns those points into leak paths.
- Tule fog algae on north-facing slopes. Days of fog sitting on a Davis roof keep the shingle surface damp far longer than the rain itself, which is why we find moss and algae on north planes that stay damp for days at a time. The granule bed lifts, the mat exposed, and a small repair that patches only the visible field ignores the real deterioration happening where the slope never dries.
- Brittle decking and outdated framing on 1960s-80s tract homes. Many Davis neighborhoods were built during the UC Davis expansion era, and their original composition shingles are aging out in sync. Pulling the first square often exposes decking that’s delaminated from decades of summer heat, and sometimes framing that no longer meets current code. We document what we find and price the full scope in writing before work proceeds.
- Village Homes passive-solar geometry that demands design care. West Davis’s Village Homes neighborhood was engineered on an east-west street grid so every roof plane faces true south, with non-standard pitches and overhangs sized for shade calculations. Repairing those roofs means preserving that passive-solar geometry, not just swapping shingles – a constraint that does not exist on a standard tract roof anywhere else in Yolo County.
Pricing for Roof Repair in Davis, CA
Here’s what Davis homeowners should budget, based on the actual repairs we perform in this city week to week. A basic vent boot or pipe collar replacement runs $250 to $450. Flashing repairs at valleys, walls, and chimneys run $450 to $900. Localized shingle replacement after wind or impact damage runs $400 to $1,000, depending on the size of the affected field. Full leak tracing and repair, where we open the roof, replace damaged underlayment, and close it back up, runs $650 to $1,400. Commercial membrane repairs on flat roofs near campus run $900 to $2,800. These are honest Davis market ranges. Your written quote before any work starts is the price you pay, full stop. Call (743) 200-8347 to schedule a free estimate and one of our technicians will assess the roof in person and hand you a line-item price in writing.
We Also Serve Cities Near Davis
Mercer Roofing serves Davis and the surrounding Yolo and Solano County communities, including Dixon, Woodland, West Sacramento, and Winters. The same Threshold Verified technicians, the same written pricing, the same 365-Day Done Right Promise apply on every job, no matter which of these cities the roof sits in. If you’re in one of these neighboring areas and need roof work, call the same number: (743) 200-8347.
Serving Davis, CA - Our Local Coverage Area
We’re based in the Davis 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 Davis
We photograph every solar penetration before we touch a shingle, remove or work beneath the array as needed, and re-flash each mount point properly so the lag bolts no longer leak. On most Davis solar jobs, the leak originated at the penetration, not the panel itself, so we repair the underlayment and flashing beneath the mount and coordinate with your installer if panel removal is required. Call (743) 200-8347 and we’ll tell you exactly what the repair will cost in writing.
Because the original composition shingles on Davis tract homes built in the 1960s-80s have aged out simultaneously, and a small visible leak often indicates broader decking or underlayment deterioration beneath the surface that only opening the roof will reveal. That’s why we write allowances into the contract, price the full scope after inspection, and get your written approval before any additional work proceeds. You are never surprised by a change order you didn’t agree to.
Village Homes in west Davis was built on an east-west street grid so every roof plane faces true south for passive-solar gain, with non-standard pitches and overhangs engineered for shade calculations. Repairing those roofs requires preserving that passive-solar geometry – the overhang shadows, the roof angles, the eave lines – rather than simply replacing shingles at the same dimensions. We’ve repaired Village Homes roofs specifically with that geometry in mind, and we document the original plane measurements before any repair is scoped. Call us for a repair quote that respects the design.
Tule fog sits on Davis roofs for days at a time in winter, keeping north-facing slopes damp far longer than other planes and feeding algae and moss growth that lifts the granule bed and accelerates shingle failure. A repair that only patches the visible algae stains ignores the moisture retention happening at the flashing and underlayment level. We inspect the entire north slope and its flashings, not just the stained area, and give you a written repair scope that addresses what the fog is actually doing to the roof.
Yes, we repair flat and low-slope roofs on the apartment buildings, rental units, and commercial properties near campus, including membrane systems like TPO, EPDM, and modified bitumen. The flat-roof stock near campus has a separate failure profile from single-family Davis homes, and we trace leaks at the seams, curbs, and drains before writing any repair scope. A localized commercial membrane repair near campus typically runs $900 to $2,800; call (743) 200-8347 for an exact quote.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Davis since 2000.