Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Inspection Across Cotati
A roof inspection in Cotati typically costs $150 to $450 for a standard single-family home, with most inspections completed in under an hour. Larger homes, commercial buildings, or inspections requiring drone work on steep pitches run higher. That’s the honest range we quote before anyone climbs a ladder.
We know Cotati roofs because we work on them every week. The marine air that pushes through the Petaluma Gap, the walnut trees that drop leaves into every valley and gutter run, the 1960s ranch homes with low-slope rooflines – these aren’t abstract factors to us. They’re the conditions our technicians check for on every single inspection. Call (361) 320-9467 to schedule yours. A live person answers around the clock – no voicemail, no callback queue.
Key Takeaways
- Roof inspections in Cotati run $150 to $450 for most homes, with a written quote before any paid work begins.
- Our Cotati inspections focus on moss, walnut leaf litter, and hidden decking rot – the real local problems.
- Every inspection checks for Class A fire-rated assembly compliance, which Sonoma County insurers now often require.
- Background-checked, uniformed technicians show up in the promised window. You know who’s on your roof.
Why Brennan Roofing Is Cotati’s Preferred Roof Inspection Company
We built our reputation in Cotati on one habit: we write the inspection findings down and hand you the report before we leave the driveway. No vague verbal summaries, no “we’ll send that over” follow-ups that never arrive. The price goes on paper before any work starts, and that price does not move at the door. That’s the Garrison Standard, and it applies to every job we run in Cotati, from a quick pre-purchase inspection near downtown to a full commercial roof assessment off Gravenstein Highway.
Travis Oakley runs our crews. He’s the person homeowners ask for by name, and he’s the one who holds every technician to the same checklist, the same documentation standard, and the same respect for your property. When a Cotati homeowner tells us they’ve been burned by a roofer who no-showed or changed the number at the last minute, it’s not an abstract complaint. It’s the reason we built the process we run.
Our response time to Cotati is prompt, with dispatch coordinated from the Bay Area office and crews working locally. If you’re off a shaded lot near Sonomarin or up in the Walnut Park neighborhood, the same disciplined crew shows up, does the same thorough job, and leaves the same written report.
Commercial Roof Inspection in Cotati
Commercial Roof Inspection in Cotati covers low-slope commercial buildings, multi-unit residential structures, and the older mixed-use buildings near downtown Cotati that often fly under the radar until a wet-season leak forces action. These inspections cost more than a single-family home check – typically $350 to $900 depending on roof area, accessibility, and whether drone imaging is needed. The written report documents membrane condition, flashing at penetrations, drain and scupper function, and whether the assembly meets current fire-rating requirements that commercial insurers in Sonoma County are increasingly enforcing.
What Gets Checked on a Commercial Inspection
We inspect membrane seams, flashing condition at HVAC penetrations, drain performance, and ponding patterns on flat or low-slope commercial roofs. Ponding water on a Cotati commercial roof may not look urgent in August, but it accelerates membrane degradation and shortens the roof’s service life. We document it in the written report, with photos.
When a Building Owner Should Schedule One
Owners should schedule a commercial inspection before listing, after a storm season, or when an insurer sends a non-renewal notice tied to roof condition or fire rating. We also inspect after a tenant improvement modifies penetrations, because every added pipe, vent, or curb is a potential leak point if the flashing isn’t properly integrated.
Roof Inspection Services in Cotati
Roof Inspection Services in Cotati focus on the specific failure modes we see here repeatedly: organic debris packed into valleys, moisture held against the decking, and low-slope roofs where a compromised underlayment or flashing detail lets water back up under the shingles. A standard residential inspection runs $150 to $450 for most homes, with a written report that includes photos, findings, and specific recommendations with line-item pricing. If a minor repair is identified during the inspection, we can often handle it that same visit or schedule it directly.
The Cotati-Specific Checklist
Our inspectors always check valleys, gutter runs, and behind the drip edge for walnut and fruit-tree leaf litter. They check the underlayment condition, flashing at penetrations, and whether the assembly carries a Class A fire rating. They also look for moss creep, which is more damaging than most homeowners realize because it lifts shingle edges and accelerates granule loss.
When to Get One
Get one before buying a home, after a major wet season, when your insurer asks about roof condition, or when granules start showing up in the gutters. That granule buildup is often the first visible sign that a shaded Cotati roof is failing in ways a quick glance from the street won’t show.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Cotati
We work with roofing systems from GAF, CertainTeed, and Owens Corning, and we keep common repair materials on hand so Cotati customers don’t wait on a parts order. If your existing roof is a GAF architectural shingle that’s losing granules on a shaded north slope, we know exactly which replacement shingle matches. If you have a CertainTeed system and the ridge vent cap is compromised, we understand how that vent integrates with the underlayment. Owens Corning systems on newer Cotati townhomes are familiar to us too. Every recommendation names the material and the reason, plainly, so you decide with confidence.
Common Roof Inspection Problems We See in Cotati Homes
- Walnut leaf litter packed in valleys and gutters. This is the 800-pound gorilla of Cotati roof problems. The leaves trap moisture against the decking, which rots wood and shortens the life of the underlayment, and a quick walk-around inspection misses it entirely. Our inspection always includes pulling the loose debris from the valleys so we can actually see the decking condition underneath.
- Low-slope ranch roofs with failing flashing at penetrations. Many 1960s and 1970s Cotati ranch homes have shallow pitches that don’t shed water quickly. When the flashing around pipes, vents, or the ridge vent cap fails, wet-season rain backs up under the shingles and doesn’t dry out before the next storm. We check every penetration on these roofs, not just the ones that look suspect from the ground.
- Missing Class A fire-rated assemblies. Sonoma County wildfire insurance carriers increasingly require fire-rated roofing, and many older Cotati homes were built before those standards existed. An inspection that doesn’t verify the assembly rating misses the exact thing the insurer is asking about. We document the assembly rating in every written report.
- Moss creep on shaded north-facing slopes. Homes near mature walnut and fruit trees often have shaded roof areas where moss takes hold. It looks cosmetic, but it lifts shingle edges, lets moisture under the material, and accelerates granule loss. Our inspection identifies where moss is actively damaging the roof and what full removal and prevention costs.
Pricing for Roof Inspection in Cotati, CA
A standard single-family roof inspection in Cotati runs $150 to $450. Larger homes with complex rooflines, steep pitches, or those requiring drone imaging run $350 to $700. Commercial inspections in Cotati typically run $350 to $900 depending on roof area and access. What affects the price: roof size, pitch, accessibility, number of penetrations, and whether you want drone photos of areas that are unsafe to walk. The inspection fee is credited toward the cost of any repair work we complete. Call (361) 320-9467 for a free estimate – the price goes on paper before any work starts, and that number does not move at the door.
We Also Serve Cities Near Cotati
Our Roof Inspection team serves Cotati and the surrounding Sonoma County communities, including Rohnert Park, Petaluma, Santa Rosa, and Sebastopol. If you’re in Cotati or one of these nearby cities, the same disciplined crew, the same written report, and the same Garrison Standard apply.
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 Inspection in Cotati
Moss is the dominant problem in Cotati because the town’s mature walnut and fruit-tree canopy shades roofs and the coastal-influenced valley air keeps surfaces damp through much of the year. Moss holds moisture against shingles, lifts edges, and accelerates granule loss – damage that compounds each wet season. Our inspections look for moss creep on shaded north-facing slopes and document where it’s actively damaging the roof. Call (361) 320-9467 for a full assessment.
Yes. Every inspection includes documentation of the roof’s fire rating, because Sonoma County wildfire insurance carriers increasingly require Class A fire-rated assemblies. If your roof doesn’t meet that standard, we tell you in the written report and quote the upgrade to a Class A assembly, usually a fire-rated architectural shingle over a high-grade ice and water shield in the valleys. Call (361) 320-9467 to schedule yours.
The leaves pack into valleys and gutters, trap moisture against the decking, and cause hidden wood rot that a surface check misses. That trapped moisture is the reason underlayment fails early on Cotati roofs, not sun or wind. A thorough inspection pulls the loose debris from the valleys to expose the decking condition underneath, because the real problem is always beneath the pile. Call (361) 320-9467 for an inspection that checks below the surface.
An inspection on an older low-slope ranch in Cotati should check the underlayment condition, flashing at every penetration, the drip edge, valley condition, moss presence, and the fire-rating class of the assembly. Low-slope roofs shed water slowly, so any flashing failure or debris blockage allows the next wet-season rain to back up under the shingles. Our written report covers each of these items with photos and specifics. Call (361) 320-9467 – estimates are free.
Compare them line by line: what each includes, what each excludes, and whether the price is in writing before work starts. One quote might include valley debris removal and decking inspection, while another might only do a visual walk-around and give you a verbal summary. The Garrison Standard means ours is always in writing, with specific line items and a fixed price that doesn’t move at the door. Call (361) 320-9467 and we’ll walk you through what a written quote looks like.
Written by Travis Oakley, Owner at Brennan Roofing, serving Cotati with roof inspections, repairs, and replacements under the Garrison Standard.