Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Inspection Across Vallejo
Roof inspection in Vallejo typically costs $145 – $290 for a standard asphalt shingle home, and most inspections take 45 – 90 minutes on site. Our Roof Inspection team works throughout Vallejo every week, from the Victorians near downtown to the hills above Blue Rock Springs, so scheduling is straightforward and we’re usually on your roof within a few days of your call. The marine layer off the Carquinez Strait means Vallejo roofs stay damp long after the rain stops, and that changes what a proper inspection needs to look for. Call (361) 320-9467 for a free estimate, and we’ll give you the price in writing before any work starts.
Why Brennan Roofing Is Vallejo’s Preferred Roof Inspection Company
Vallejo homeowners call us for a simple reason: we show up on time, we tell you what’s actually wrong, and we put the price on paper before we touch the roof. No door pricing, no surprise change orders. That’s The Garrison Standard, and it applies to every inspection we do in Vallejo, from a small bungalow off Tennessee Street to a two-story stucco home in the hills near Glen Cove.
Travis Oakley runs our inspection crews with a simple rule: the roof gets probed, not just looked at. We lift shingles at valleys. We check flashing at chimneys and sidewalls. We get into the attic and look at the decking from below. Most importantly, we’re looking for the damage Vallejo’s damp air hides, rot that looks fine from the ground, underlayment that turns to powder when you touch it.
Every technician who steps onto your Vallejo roof is background-checked and in uniform. You’ll know exactly who’s on your property. And if the inspection turns up a problem, you get a written explanation with the dollar figure attached. The price we quote is the price you pay. We’ve built our Vallejo reputation on that.
Roof Inspection Companies in Vallejo
Roof inspection companies in Vallejo aren’t all looking at the same things. A surface inspection tells you the shingles are curling. The inspections we do go deeper, because in Vallejo, the failure is usually underneath. We probe valleys, lift flashing, and check the attic ventilation on every single inspection, because that’s where the Carquinez Strait’s moisture does its work. If you’re buying a home in Vallejo, a thorough inspection is the only way to know whether that 1940s Mare Island worker’s house needs Roof Repair - Vallejo or a full replacement. Plan on $145 – $290 for the inspection itself. Call (361) 320-9467 and we’ll schedule it.
What Gets Checked
We inspect every penetration on the roof: chimneys, vents, skylights, plumbing stacks. Each one is a point where water gets in if the flashing fails, and salt air from the Strait corrodes flashing faster here than almost anywhere else in the Bay Area. We also check the drip edge, the metal strip along the eaves that channels water into the gutters. When it rusts through, water runs straight into the fascia board.
What the Report Includes
Your inspection ends with a written summary: what we found, where it is, what it costs to fix, and what can wait. Photographs of every problem area, so you can see it with your own eyes. If the roof is fine, you’ll know that too. We don’t invent problems to sell repairs. The report is yours to keep, with no obligation.
Commercial Roof Inspection in Vallejo
Commercial roof inspection in Vallejo runs $295 – $600 for most buildings under 10,000 square feet, and typically requires a core sample or at minimum a moisture scan on flat and low-slope roofs. Vallejo’s commercial stock includes plenty of flat and modified bitumen roofs on Broadway and Sonoma Boulevard, plus the warehouse and light industrial spaces near Lemon Street and the old Mare Island base. Those roofs deal with constant moisture and salt air, and a leak that goes unnoticed for a season can mean replacing insulation, decking, or worse. We inspect flat roofs differently than pitched ones: seam by seam, flashing by flashing, and with a moisture meter on any suspect area.
Flat and Low-Slope Roofs
A flat roof on a Vallejo commercial building fails at the seams first. We walk every seam and check for gaps, fishmouths, and dried-out sealant. Then we check the flashing at parapet walls, HVAC curbs, and roof drains. Those are the first things to go on a tar and gravel or modified bitumen roof in this climate. The inspection findings come with repair recommendations and a written price.
Roof Asset Planning
If you manage a commercial property in Vallejo, an inspection is the cheapest way to plan capex. We’ll tell you how many years your roof has left, what repairs now will extend that, and what a replacement looks like when the time comes. No guessing. We give you a real maintenance path for the roof you have, not a sales pitch for the roof you don’t need yet.
Trusted Brands We Service in Vallejo
We work on every major roofing system you’ll find in Vallejo, including GAF, CertainTeed, and Owens Corning, and we stock the most common repair parts for those brands locally so a repair doesn’t wait a week for shipping. Whether your roof is a two-year-old architectural shingle or a twenty-year-old modified bitumen, we know the material and we know how it performs in Vallejo’s damp, salt-heavy air. We’ll recommend the right material for your roof, not whatever’s on the shelf. Your written quote includes the brand name, the product line, and the warranty period, so you know exactly what you’re paying for.
Common Roof Inspection Problems We See in Vallejo Homes
- Hidden rot under original wood shingles. In older Vallejo neighborhoods like Minah and Saint Vincent’s Hill, wood shingle roofs often hide rotted skip sheathing and failed underlayment that only shows up when we probe a valley or chimney flashing. The surface looks weathered but fine. The structure underneath may not be.
- Corroded flashing and fasteners. Salt-laden air from the Carquinez Strait attacks metal flashing, drip edge, and fasteners faster than homeowners expect. We see rusted-out chimney flashing on roofs that are only ten years old, and the water follows the rust right into the decking.
- Moss and algae growth trapping moisture. The marine layer keeps roofs damp and shaded for much of the year, especially on north-facing slopes and under trees. Moss and algae hold water against the shingles, accelerate granule loss, and mask decking damage below.
- Inadequate attic ventilation. Many 1940s Mare Island workers’ homes and 1960s-80s ranches were built with minimal or blocked ventilation. Moist air gets trapped, condenses on the underside of the decking, and rots it from the inside out. An inspection that only looks at the top of the roof misses this entirely.
Pricing for Roof Inspection in Vallejo, CA
Here’s the honest price structure for Vallejo, straight from our written quotes. A standard residential roof inspection runs $145 – $290, depending on roof size, slope, and accessibility. Commercial inspections start around $295 and go to $600 for larger low-slope buildings that require moisture scanning. If repairs come out of the inspection, the inspection fee gets credited toward the repair work, so you’re not paying twice. The price you approve in writing is what you pay. We don’t change it at the door and we don’t find surprise damage and quietly add it to the bill. Call (361) 320-9467 for your free estimate.
We Also Serve Cities Near Vallejo
Our Roof Inspection crews cover Vallejo and the surrounding communities of American Canyon, Rodeo, Benicia, and Hercules. If you’re just outside Vallejo, call us, we’re likely already working in your neighborhood, and the same pricing and written guarantee apply wherever we inspect.
Serving Vallejo, CA - Our Local Coverage Area
We’re based in the Vallejo 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 Vallejo
Because Vallejo’s winter rains are the first sustained heavy moisture your roof sees all year, and they expose failures that were building for months. The marine layer keeps your roof damp but never dry enough to reveal a slow leak. When the real rain comes, water finds every compromised seam, valley, and flashing point. That first heavy rain is when the hidden rot under your shingles finally lets water through to the ceiling. If you notice a leak after the first winter storm, call (361) 320-9467 and we’ll find the source, not just the wet spot.
The marine layer means your roof stays damp for months at a time, which accelerates moss, algae, and rot in ways a dry climate never would, and it means an inspection has to probe for moisture damage, not just look for missing shingles. We check the decking from below, we lift shingles at suspect areas, and we pay particular attention to ventilation. Salt air from the Strait also corrodes metal flashing and fasteners faster than normal, so we inspect those components closely on every Vallejo roof.
Expect that the wood shingles themselves are usually not the problem, but what’s underneath them often is. Homes from the 1880s through the 1940s in Minah, Saint Vincent’s Hill, and downtown Vallejo frequently have skip sheathing and underlayment that has failed decades ago. We lifted shingles on a 1940s Mare Island shipyard worker’s home near Saint Vincent’s Hill after the first heavy winter rains, where a leak at a valley had soaked the original wood shingle roof. When we lifted the shingles, we found rotted skip sheathing and failing underlayment that had been hidden for decades, so we replaced the decking, installed new ice and water shield, and finished with architectural shingles and a ridge vent to handle the constant moisture. The homeowner was relieved we caught it before the framing was compromised. That’s what a proper inspection is for.
Yes, commercial roofs in Vallejo get a seam-by-seam inspection on flat and low-slope surfaces, plus moisture scanning on suspect areas, because the failure modes are different from residential pitched roofs. We’re looking for failed seams, cracked flashing at parapets and HVAC curbs, and plugged drains. The report includes a prioritized repair list with written pricing, so you can plan your maintenance budget without guessing. Schedule a commercial inspection by calling (361) 320-9467.
We show you the damage, explain what it means, and hand you a written price to fix it. Nothing gets repaired without your approval. The price goes on paper before any work starts, and it does not change at the door. That’s The Garrison Standard. If we find something small during an inspection and you want it fixed right then, we’ll write it up and you decide. No pressure, no hidden add-ons.
If you need a roof inspection in Vallejo, call (361) 320-9467. We’ll schedule your inspection, give you a written price before any work begins, and stand behind every recommendation with the 365-Day Done Right Promise: if it’s not done right, we make it right, in writing, at no charge, for one full year.
Written by Travis Oakley, Owner at Brennan Roofing, serving Vallejo and the surrounding Bay Area communities under The Garrison Standard.






Before
After
Before
After
Before
After