Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterRoofers in Cotati, CA
Roofers in Cotati, CA work on a housing stock built mostly between the 1950s and 1970s: single-story ranch homes with low-slope or lightly pitched composition shingle roofs. The real enemy here isn’t heat or wind. It’s moisture and tree litter. Wet winters, moss and lichen growth, and walnut and fruit-tree leaves packed into valleys and gutters each fall define most of the roofing work we see in Cotati. Call (361) 320-9467 for a written estimate before any work starts.
Why Cotati Homes Are Different
Cotati sits in a coastal-influenced Sonoma County valley, which means roofs face a two-part problem every year. From November through April, heavy seasonal rain saturates anything organic growing on the roof surface. From May through October, warm, dry summers bake exposed underlayment and shingle edges. That cycle is hard on older roofs, especially the mid-century and 1960s-70s ranch homes that make up so much of Cotati’s housing stock.
What we see most often in Cotati is not storm damage. It’s moss and algae buildup across shaded roof planes, lichen lifting shingle tabs, and debris packed into valleys where walnut and fruit-tree branches overhang the roof line. Gutters fill fast here, and when water backs up under the roof edge, it finds its way into the decking. Homeowners near the downtown core with older farmhouse-style homes deal with the same thing, just on steeper pitches that hold debris differently.
There is also a wildfire angle specific to Sonoma County. Insurance carriers increasingly require Class A fire-rated roof assemblies before they will write or renew a policy. We talk to Cotati homeowners about that requirement regularly, particularly those with older composition shingle roofs that no longer meet the rating their carrier wants to see.
Our Main Cotati Services
Cotati homeowners call us for three things more than anything else: full roof replacement, targeted repair work, and inspections that give them a straight answer about remaining roof life. Each service has its own Cotati page with local pricing and specifics.
Roofing Company in Cotati
Full roof replacement in Cotati means working around tree overhangs, low-slope sections that need different underlayment details, and older decking that sometimes has to be repaired before new material goes down. We write the complete scope and price on paper before any tear-off begins, and every installation is covered by the 365-Day Done Right Promise in writing. See the full breakdown on the Roofing Company in Cotati page, including material options from GAF, Owens Corning, and Tamko.
Roof Repair in Cotati
Repair work in Cotati is frequently driven by the same two things: valve flashing that has pulled loose after wet winters, and valleys clogged with leaf litter that hold water against the roof surface. A repair here is typically localized, but we always check the surrounding area for hidden damage before we quote. Prices go on paper before anything is touched. Details and exact repair ranges live on the Roof Repair in Cotati page.
Roof Inspection in Cotati
A roof inspection in Cotati answers one question most homeowners can’t answer themselves: how much life is left, and what has to happen before the next rainy season. We look at flashing, underlayment, decking from both the attic and exterior, and drainage. Many Cotati homeowners schedule one after their insurance company sends a letter about roof condition. Full inspection scope and pricing are covered on the Roof Inspection in Cotati page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Cotati
We install and service roofs built with material lines from GAF, Owens Corning, Atlas, and Tamko, among others. Replacement parts and matching material for repairs are sourced through local and regional suppliers, and most Cotati repair jobs are completed within a day or two once the material is on hand. See the full list on our brands page.
Pricing for Roofers in Cotati, CA
| Service | Typical range in Cotati |
|---|---|
| Full roof replacement (composition shingle, 1,200 – 1,800 sq ft) | $9,500 – $16,500 |
| Full roof replacement (composition shingle, 1,800 – 2,500 sq ft) | $14,000 – $22,500 |
| Full roof replacement (composition shingle, 2,500+ sq ft) | $20,000 – $38,000 |
| Roof repair (minor, single leak or flashing) | $350 – $900 |
| Roof repair (moderate, multiple leaks or valley work) | $900 – $2,500 |
| Roof repair (major, structural or decking repair) | $2,500 – $6,000 |
| Roof inspection | $150 – $400 |
Two things push pricing up in Cotati more than anything else: tree coverage that slows the crew down and decking rot discovered under old shingles. Neither one gets added to the bill without you seeing it in writing first. The price goes on paper before any work starts, and that number does not move at the door.
Neighborhoods We Serve in Cotati
We work across the entire Cotati area, from the older ranch subdivisions to the infill townhome developments. Response time for most Cotati calls is same-day or next-day, depending on the nature of the work.
- Downtown Cotati and the older farmhouse-style streets around it
- The mid-century ranch subdivisions north of Highway 116
- Residential streets south of East Cotati Avenue
- Newer infill townhome communities
- Rural residential parcels on the edges of city limits
Service Area – Cities Near Cotati
Brennan Roofing also covers the surrounding Sonoma County communities. If you live just outside Cotati, we serve Rohnert Park, CA to the north, Petaluma, CA to the south, Santa Rosa, CA to the north and east, and Sebastopol, CA to the west. Dispatch and scheduling for all of these areas is coordinated from the brand’s San Francisco Bay Area office.
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 Roofers in Cotati
Most Cotati calls are scheduled same-day or next-day. Inspections are typically the fastest appointment to book. Repair work depends on material availability, but most jobs are completed within two days once work begins. Call (361) 320-9467 and a live person will get you on the schedule.
Most full roof replacements in Cotati require a permit through Sonoma County or the City of Cotati depending on jurisdiction. Repairs that replace a small section of shingles or flashing generally do not. We pull needed permits and the homeowner pays the actual permit fee, shown on the written estimate.
In many cases, yes. Sonoma County wildfire-insurance pressure has made Class A fire-rated assemblies a common requirement before a policy is written or renewed in Cotati. If your carrier has sent a letter about roof condition, ask during the estimate call and we will factor the rating requirement into the material recommendation.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Cotati Customers Say
"Replaced the underlayment and drip edge as well as shingles. Many roofers skip that. Everything was explained in writing."
- Barry F."Crew lead is a veteran and runs the job like it. Showed up at 7 sharp, tarped the garden, tore off the old roof, and had the new shingles on by the end of day two."
- Joe K."Replaced a rotted fascia board along with the roof edge. Matches the trim."
- Lou H.