Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Repair Across Cotati
Roof repair in Cotati usually costs between $350 and $1,400 for common fixes like shingle replacement, flashing repair, and vent boot work. Bigger repairs involving decking replacement or structural framing run $1,800 to $4,500. Most jobs on Cotati homes take one to two days once we’re on the roof. We know exactly what these older houses hide, and we’ll give you a written price before any work starts. Call (945) 303-9821 and a live person answers, day or night.
Why Tilehurst Roofing Is Cotati’s Preferred Roof Repair Company
Tilehurst Roofing is part of the Kingswell family of roofing companies, founded in 2000, and we’ve built our reputation in Cotati one repaired roof at a time. Homeowners here don’t want a sales pitch. They want someone who shows up when they said they would, puts the price in writing before touching the roof, and comes back if the fix fails. That’s the Kingswell Way: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, come back if it fails.
Every Cotati call gets a live person on the phone, 24 hours a day, seven days a week. No voicemail queue. No “we’ll call you Monday.” When you call at 9 p.m. because water is dripping through the kitchen ceiling, you’ll talk to a human who can schedule a crew for Cotati immediately.
Greg Holloway leads our Cotati service operations, and he holds every job to the 365-Day Done Right Promise: if it’s not done right, we make it right, for a full year after the job. That’s documented, written, and delivered before the crew leaves your driveway. You don’t get that from a one-truck operation that disappears after the check clears.
Our techs are background-checked and uniformed. You know exactly who’s on your roof. And when we say we’ll arrive in a two-hour window, we arrive in that window. Cotati homeowners have told us that alone sets us apart from the last three contractors they tried.
Storm Damage Roof Repair in Cotati
Storm damage roof repair in Cotati handles what the wet winters do to aging composition shingles, flashing, and roof decking. Cotati gets 30 to 35 inches of rain a year, concentrated between November and March, and the damage shows up as lifted shingles, water staining on ceilings, granule loss in gutters, and leaking around chimneys and skylights. After a heavy wind and rain event, we inspect the slope facing the prevailing weather first; that’s usually where the damage starts. A typical storm repair on a Cotati home runs $375 to $950 for shingle replacement and re-sealing. If the storm tore off enough shingles to expose decking, expect $1,200 to $2,200 to patch and re-shingle properly.
Wind-Lifted Shingles
When wind gets under a shingle’s edge, it breaks the seal strip and leaves the roof vulnerable. We don’t just glue the shingle back down. We check the surrounding shingles for broken seals, inspect the underlayment beneath, and replace what’s compromised. On 1960s and 1970s composition shingles, which make up a large share of Cotati’s housing stock, a single lifted shingle is often a sign the rest of that slope is nearing failure.
Post-Storm Leak Tracing
Water travels. A leak that shows up in the living room ceiling may have entered the roof twenty feet away, run down a rafter, and pooled at a low point. We trace the water path from the interior stain back to the roof penetration. Flashings around vents, chimneys, and skylights fail first, especially with fog-driven moisture keeping the caulk and sealant wet for months at a time.
Metal Roof Repair in Cotati
Metal roof repair in Cotati comes down to two things: seam and penetration failures from thermal movement, plus corrosion from the persistent marine fog that rolls in from Bodega Bay. Metal roofs are increasingly common on Cotati’s 1990s and 2000s infill homes and on re-roofs of older farmhouse-era structures, and most problems show up at the fasteners, flashings, and transitions. A typical metal roof repair here runs $400 to $1,100 for re-sealing seams and replacing corroded fasteners. Full panel replacement or structural repair beneath the metal adds $1,500 to $3,800 depending on what’s hidden underneath. We service all major metal roof systems and stock parts locally for faster turnaround on Cotati jobs.
Corroded Fasteners and Seam Seals
Fog is the quiet enemy of metal roofs in Cotati. The morning marine layer keeps surfaces damp well into midday, and that constant moisture accelerates corrosion at fasteners and seam sealants. We replace failed fasteners with corrosion-resistant hardware and re-seal seams with sealants rated for wet, coastal-adjacent conditions. A metal roof that’s only ten years old can show fastener rust here that would take twenty years inland.
Thermal Movement and Oil-Canning
Metal expands and contracts with temperature swings, and Sonoma County’s hot afternoons followed by foggy, cool nights create meaningful daily movement. Over time, that movement loosens fasteners and opens seams. We identify the stress points, re-secure what’s loose, and in persistent cases install expansion-compatible sealing details. It’s a repair, not a band-aid.
Trusted Brands We Service in Cotati
Tilehurst Roofing installs and repairs materials from seven leading manufacturers: Atlas, Tamko, Boral, GAF, CertainTeed, Owens Corning, and IKO. For Cotati’s wet climate and fog-driven moisture, we often recommend Atlas storm-rated shingles or Boral tile for fire-prone hillside lots where Sonoma County code now requires Class A materials on virtually every re-roof. We keep common repair stock for these brands in our Bay Area warehouse, so we’re not waiting on a distributor when your roof is open. The product should fit the home and the code, not whatever happens to be in the truck.
Common Roof Repair Problems We See in Cotati Homes
- Failed underlayment beneath original 1960s-80s composition shingles. Cotati’s year-round ground-level humidity from the Laguna de Santa Rosa wetlands keeps roof decks damp, and the felt underlayment from that era disintegrates. What looks like a small shingle patch is often a full underlayment failure waiting to leak.
- Moss and lichen on north-facing, tree-shaded slopes. In neighborhoods along the Laguna corridor, a roof can go from clean to fully moss-colonized in three to five years. Moss blocks drainage and lifts shingle edges, and we treat those slopes differently than the sun-exposed sections just a few blocks away.
- Sheathing rot hidden beneath aging shingles. The same fog that promotes moss also keeps roof decking damp. We regularly find soft, rotted plywood or spaced sheathing under shingles that looked fine from the street. It’s the most common reason a Cotati repair quote moves once the roof is open.
- Flashing and drip edge corrosion. Persistent moisture accelerates rust at roof-to-wall intersections, valleys, and chimney flashing. On older Cotati homes, galvanized flashing has often corroded through, letting water run behind the siding and into wall cavities.
Pricing for Roof Repair in Cotati, CA
Here are the real numbers, the same ones we’d write on your estimate. Shingle replacement runs $350 to $850 for a typical repair on a Cotati home. Leak repair runs $300 to $700 for locating and sealing a penetration leak. Flashing repair runs $400 to $900. Flat roof patches run $500 to $1,200. Vent boot replacement runs $300 to $600. Valley repair runs $450 to $1,000. If we find rotten decking, add $8 to $12 per square foot for removal, replacement, and re-shingling that section. We don’t quote low to win the job and then hit you with a change order. The Kingswell Way means the cost of hidden damage is discussed before we open anything up, priced in writing, and approved by you before we touch it. Call (945) 303-9821 for a free estimate with a written price.
We Also Serve Cities Near Cotati
Tilehurst Roofing serves Cotati and the surrounding Sonoma County communities. If you’re in Rohnert Park, Petaluma, Santa Rosa, or Sebastopol, the same written-price, written-guarantee approach applies. Our Roof Repair team covers the full corridor, and you can read more about our local focus at Roof Repair in Cotati. Same crews, same standards, same 365-Day Done Right Promise.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati 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 Cotati
Cotati’s position in the low-lying Santa Rosa Plain next to the Laguna de Santa Rosa wetlands creates damp conditions that aggressive moss loves. North-facing and tree-shaded roof slopes near the Laguna corridor can go from clean to fully moss-colonized in three to five years. That’s roughly twice as fast as sun-exposed roofs in Rohnert Park or Santa Rosa, where wind and afternoon sun dry things out faster. We recommend zinc or copper moss-inhibiting strips on re-roofs here, and for repairs we’ll install them along affected eaves so the problem doesn’t return next season. Call (945) 303-9821 for an inspection and a written quote; estimates are free.
Most minor roof repairs in Cotati, like replacing a handful of shingles or resealing flashings, don’t require a building permit. But if the repair area exceeds a certain size or involves structural decking replacement, Sonoma County code can trigger a permit and with it the requirement for Class A fire-rated materials. That’s a post-2017 wildfire rule that now applies to virtually every re-roof in the county. We’ll tell you before work starts whether your repair crosses the permit threshold, and we pull permits and schedule inspections ourselves when required. For an exact answer on your specific roof, call (945) 303-9821 and we’ll assess it in person.
We plan for it before we open anything up. On older Cotati homes, especially 1960s-1980s tract houses, we know from experience that fog-driven moisture has often rotted sections of decking beneath perfectly intact shingles. We were called to a 1970s ranch on Laguna Vista Drive where the homeowner saw granules in the gutters after every rain. When we peeled back the original composition shingles, we found the underlayment had completely disintegrated and the decking was soft from years of moisture; we replaced 12 squares of architectural shingles, added ice and water shield in the valleys, and installed a copper moss strip along the north-facing eave. The homeowner later told us the roof stayed dry and moss-free through two wet winters. That’s how we handle every job: we talk through the likely hidden costs, write an allowance into the contract, and any surprise is priced and approved in writing before we touch it. Call (945) 303-9821 to schedule your free estimate.
Look for granules collecting in gutters, shingles that are curling or lifting at the edges, moss growth on shaded slopes, water stains on ceilings after rain, and daylight visible through attic boards. If the damage is confined to one area, say a failed valley or a cluster of damaged shingles, a repair makes sense. If the roof is original to a 1960s or 1970s Cotati home and showing widespread granule loss and seal failure, replacement usually costs less per year than patching over and over. We’ll give you an honest recommendation and a written price either way. Call (945) 303-9821 for a free roof assessment.
Cotati’s persistent morning fog keeps metal roof surfaces damp well into midday, which accelerates corrosion at fasteners and seam sealants. What would be a routine re-seal in a dryer city often requires fastener replacement here to address rust. Rain itself matters less than the humidity, because it’s the sustained surface moisture, not the occasional downpour, that causes the most damage. We use corrosion-resistant hardware and wet-rated sealants specifically for Cotton’s coastal-adjacent conditions, and we inspect adjoining seams and fasteners during every metal repair so you don’t get a second failure six months later. Call (945) 303-9821 for an exact quote; estimates are free.
Get Your Cotati Roof Repaired by People Who Answer the Phone
If your roof is leaking, losing granules, or growing moss faster than your neighbors on the sunny side of town, don’t wait. Every repair from Tilehurst Roofing comes with a written price before any work starts, a written guarantee delivered before the crew leaves, and a full year of accountability under the 365-Day Done Right Promise. Greg Holloway and the Cotati service team know exactly what these older homes hide, and we’ll tell you the truth before we open anything up. Call (945) 303-9821 now to schedule your free estimate. A live person answers, 24/7.
Written by Greg Holloway, Owner at Tilehurst Roofing, serving Cotati with written-price, written-guarantee roof repair.