Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roofing Company Across San Bruno
Roofing in San Bruno is not like roofing in Millbrae or South San Francisco. The fog, the salt air, and the way wind funnels through the gap in the coastal hills change what materials survive and what fails early. We plan every job around those conditions. Our Roofing Company crews work across San Bruno every week, from the ranch homes off San Bruno Avenue to the split-levels climbing the hills in Crestmoor. If you need an honest look at your roof, call (831) 318-8819 and a live person answers. Always.
Key Takeaways
- Salt-laden wind drives fastener and flashing corrosion here faster than inland cities, so we specify 316 stainless or hot-dip galvanized hardware on every replacement.
- Roof replacement in San Bruno typically runs $11,000 – $22,000 depending on pitch, decking condition, and material choice. Repair work runs $450 – $1,800 for most leak and flashing fixes.
- Every job starts with a written price before any work begins, and every job carries the 365-Day Done Right Promise in writing.
- We answer the phone with a live person, 24/7. No voicemail tree.
Why Brennan Roofing Co San Francisco Is San Bruno’s Preferred Roofing Company
San Bruno homeowners have seen the pattern. A roofer gives a low number over the phone, shows up late, finds “unexpected damage,” and the price moves before the first shingle comes off. That does not happen with us. The price goes on paper before any work starts, and it does not move at the door. That is the Garrison Standard, and it applies to every job our crews run in San Bruno, whether it is a small leak repair near Junipero Serra Park or a full replacement up in Rollingwood.
Reviews from San Bruno customers consistently mention two things: the crew showed up inside the promised window, and the job site was clean when they left. Our technicians are background-checked and arrive in uniform, so you know exactly who is on your roof. We have been doing this since 2000 through the Garrison Partners family, and every location operates to the same written standard. Travis Oakley runs our operation with one rule above all: do what the written estimate says, and stand behind it for a full year.
We respond to San Bruno calls the same day for what we can diagnose quickly, and we schedule full estimates within days, not weeks. Our trucks stage out of the Bay Area office, and crews know the local streets, the permit office, and the particular way fog sits against north-facing slopes in this city.
Styles & brands we work with
Roof Coating in San Bruno
Roof Coating in San Bruno is a practical extension of a roof’s life, especially on the low-slope and flat roofs common near the airport and in the older tracts off Huntington Avenue. A properly applied elastomeric or silicone coating seals hairline cracks, reflects UV before the fog burns off, and gives a built-up or modified bitumen roof another five to ten years before replacement. That matters when a full tear-off is not in the budget this year. Most roof coating jobs in San Bruno run $2,800 – $7,500 depending on square footage, surface prep, and the number of coats needed.
When Coating Makes Sense
If your flat roof is sound but the surface is weathered, chalky, or showing minor ponding cracks, coating is often the right call. We inspect the seams and parapet flashing first. Coating over soft decking or failing seams just hides the problem under a new skin. In San Bruno, we also check every penetration for corrosion before coating, because salt air rusts the edge metal around vents and drains faster than the membrane itself wears out.
Coastal-Grade Coating Work
We never coat over wet or salt-caked decking. Crews power-wash and prime first, then apply the coating in two passes with a minimum dry-film thickness. Around the gravel stop and parapet flashing, we seal every joint with marine-grade sealant before the topcoat goes on. That is a step cut-rate coating crews skip, and it is the first place a coated roof fails in the fog belt.
Free Roof Estimate in San Bruno
A Free Roof Estimate in San Bruno should not be a sales pitch with a brochure and a pressure close. Ours is a written inspection with measurements, photographs, and a line-item price you can hold us to. We walk the roof on every estimate, check the decking from the attic side when accessible, and document what we find. You get the number on paper before we leave. No follow-up call trying to “sharpen the pencil.” The price is the price.
What the Estimate Includes
Every estimate lists the material spec line by line: shingle brand and model, underlayment type, fastener grade and pattern, drip edge material, and flashing detail. For San Bruno homes, we note whether the house sits on a wind-exposed western slope or a sheltered eastern block, because that changes the nail pattern and the fastener spec. You will see exactly why the number is what it is.
What It Does Not Include
No hidden allowances, no “contingency” line, no vague language. If we find rotted decking during tear-off, we photographed the suspect areas during the estimate and flagged them. The written price already accounts for what we can see. If something genuinely hidden appears, we stop, show you photos, and put a change order in writing before touching anything. You approve it or you don’t. That is the Garrison Code.
Trusted Brands We Service in San Bruno
We install and stand behind materials from GAF, CertainTeed, and Tamko, and we stock the common parts San Bruno roofs need: stainless drip edge, ice and water shield, marine-grade sealant, and architectural shingles rated for high wind. When your flat roof near the airport needs a patch, we don’t order parts from a warehouse three days out. We carry them on the truck. And because our crews work San Bruno every week, we know which supply yard has the matching tile profile or the right color of CertainTeed Landmark when a repair has to blend. You get real options explained plainly, not a hard sell on whatever has the highest margin.
Common Roofing Company Problems We See in San Bruno Homes
- Rusted-through drip edge and flashing on west-facing slopes. Five to seven years of fog and salt air will bleed the zinc off standard galvanized. We see it constantly in Rollingwood and Crestmoor, and the fix is 316 stainless or hot-dip galvanized, not another coat of paint.
- Wind-uplifted shingle tabs along the rake and ridge. Older composition shingle roofs in the hills often have a four-nail pattern with no starter strip. The shingle did not fail. The original install did. We re-nail to six nails per shingle with a starter strip rated for the wind zone.
- Delaminating built-up roofs near the airport. Salt-loaded moisture sits in the seams at the gravel stop and parapet flashing. Standard mastic cracks. We spec hot-dip or stainless edge metal and marine-grade sealant on every penetration.
- Moss and algae on north-facing slopes. Persistent marine layer moisture holds against the shaded side of the roof. We strip it, treat it, and recommend shingle lines with copper-infused granules, like CertainTeed’s StreakFighter, which resists regrowth far longer than basic shingles.
See the difference
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AfterPricing for Roofing Company in San Bruno, CA
A full roof replacement on a typical San Bruno ranch or split-level runs $11,000 – $22,000. Smaller homes with simple roof lines fall toward the lower end. Hillside homes with steep pitches, multiple ridges, and limited staging fall toward the top. The coastal-spec hardware, the stainless fasteners, the upgraded underlayment, and the six-nail high-wind pattern add roughly 15 – 20 percent over an inland-spec quote. Repairs run $450 – $1,800 for most leak, flashing, and shingle fixes. Roof coating runs $2,800 – $7,500. Roof inspection is $250 – $400, waived if you proceed with the work we propose. Call (831) 318-8819 and get the exact number for your roof in writing, before any work starts. Free.
We Also Serve Cities Near San Bruno
Our crews cover the neighboring peninsula communities, including Daly City, Burlingame, San Francisco, and San Leandro. If you are in one of those areas, the same Garrison Standard applies: written price first, uniformed and background-checked technicians, and a full-year written guarantee. This page focuses on San Bruno, but the standards do not change at the city line.
Serving San Bruno, CA - Our Local Coverage Area
We’re based in the San Bruno 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 Roofing Company in San Bruno
Because they quote an inland spec. The shingle is the same brand, but the fasteners, drip edge, underlayment, and nail pattern are not. A San Bruno roof on a west-facing hill needs 316 stainless or hot-dip galvanized hardware, a six-nail high-wind pattern, and ice and water shield at the eaves. That costs about 15 – 20 percent more on day one, and far less over a decade. Call (831) 318-8819 for the coastal-spec price in writing.
Both neighborhoods get hit by salt-laden wind, but Crestmoor sits higher and catches the funneling gusts more directly. We spec 316 stainless on every Crestmoor replacement. In Rollingwood, hot-dip galvanized is acceptable on sheltered eastern exposures, but we still recommend stainless on the west rake and ridge. The cost difference is modest. The rust difference is not.
We remove the growth mechanically, treat the deck with a moss inhibitor, and address the moisture source where possible, usually by improving ventilation or trimming overhanging branches. Then we recommend shingles with copper-infused granules. They cost a bit more and they resist regrowth for the life of the shingle, which saves money over repeated chemical treatments. Get a written quote by calling (831) 318-8819.
The square count is just how many 100-square-foot sections of roofing you have. The estimate tells you what goes on top of them and what it costs, line by line. We measure the roof, photograph it, inspect the attic side, and write the number down before we leave. You get the spec, the material names, the fastener grade, and the warranty terms. Not just a number on a napkin.
Because the fog and wind-driven rain here get under the shingles at the eaves and rakes in ways snow does not. Ice and water shield is a self-sealing membrane that protects the deck when water backs up under the shingle. In San Bruno’s fog belt, the west and south eaves are the first place hidden rot starts. We install it on every replacement, full stop. Call (831) 318-8819 and we will show you exactly where it goes and why.
One Local Failure We See Too Often
In San Bruno’s Rollingwood and Crestmoor neighborhoods, west-facing roofs are regularly hit by salt-laden gusts funneling through the gap in the coastal hills. We specify 316 stainless or hot-dip galvanized fasteners on every flashing, drip edge, and soffit detail as a result. Our crews do not need to worry about that a few miles inland in South San Francisco or Millbrae. But up here, standard zinc-plated hardware bleeds rust within five to seven years, and that rust becomes the leak long before the shingle wears out. If your roof is on the western slope of the ridge, the inland price is the expensive one.
One of our crews recently replaced a 1958 split-level on Crestmoor Drive where the original galvanized drip edge had completely rusted through, letting water wick into the fascia along the west rake. We pulled the top three courses, found salt-caked decking soft around the eaves, and rebuilt the first two feet with marine-grade plywood before installing a full ice and water shield, 316 stainless drip edge, and a GAF Timberline architectural shingle with a starter strip and six-nail pattern rated for 130 mph. The homeowner had gotten two inland-spec quotes. Ours cost about 18 percent more because of the stainless fasteners and upgraded underlayment, but the old roof made it obvious why that spec was never going to survive another decade here.
That is the difference between a roofer who knows San Bruno and one who just works in it. The Garrison Standard means the price is written before work starts, the crew arrives in uniform and on time, and the job carries a full-year written guarantee. If it is not done right, we make it right at no charge. Call (831) 318-8819 for your free written estimate. A live person answers. Every time.
Written by Travis Oakley, Owner at Brennan Roofing Co San Francisco, serving San Bruno and the surrounding peninsula.