Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roofing Company Across Millbrae
Roofing work in Millbrae is different from roofing work ten minutes down the Peninsula, and the reason is sitting right above your head. The SFO approach corridors put thousands of Millbrae homes through the airport’s Residential Sound Insulation Program, and that program changed how those attics breathe. When you need a Roofing Company that already knows what RSIP retrofits do to decking and ventilation, call Mercer Roofing at (743) 200-8347. Grant Whitlock leads our team, and we send every technician’s name and photo before they ring your doorbell.
Why Mercer Roofing Is Millbrae’s Preferred Roofing Company Company
We started in 2000, and since then we’ve torn off more layered asphalt on Millbrae ranchers than we can count. What sets us apart locally is that we know what those roofs hide. A 1954 rancher off Millbrae Avenue near the flight path isn’t a generic tear-off. It’s two shingle layers over skip sheathing, an attic sealed tight by RSIP foam, and decking that’s been stewing in trapped condensation for years. Millbrae homeowners call us because our written price covers what actually needs doing, not just what’s visible from the curb.
Every estimate includes exacting workmanship, and every repair carries a written guarantee. If a repair fails within 365 days, we come back and make it right at no charge. That’s the 365-Day Done Right Promise, and it’s printed on every contract we hand a Millbrae customer.
Response time matters here because Millbrae fog doesn’t wait. Marine air settles on north- and west-facing slopes most mornings, feeding moss and algae that eat at shingle granules. We schedule crews for Millbrae every week, and a live person answers our phone 24/7. No voicemail, no call-back form. You call, a human picks up, and we get you on the schedule.
Commercial Roofing in Millbrae
Commercial roofing across Millbrae covers the low-slope and flat roofs on the retail strips along El Camino Real and the small office buildings near Millbrae Avenue and Rollins Road. Business owners call us when a roof has outlived its coating, when ponding water sits after winter storms, or when a tenant reports staining on ceiling tiles. A typical commercial flat-roof repair in Millbrae runs $850 to $2,400 depending on the membrane and the size of the affected area. Full commercial re-roofs on smaller Millbrae buildings usually fall between $18,000 and $45,000.
Flat and Low-Slope Repairs
Millbrae’s winter storms push wind-driven rain against parapet walls and roof penetrations. We inspect every seam, lap, and termination point before quoting a price. You get a written line-item estimate before we open a single section of membrane.
Commercial Roof Coatings
Older Millbrae commercial buildings built in the 1960s and 1970s often still have their original built-up roofs. A silicone or acrylic coating can add years of life when the underlying membrane is sound. We tell you plainly if a coating will work, or if the roof needs to come off. Written price first, every time.
Metal Roof Installation in Millbrae
Metal roof installation on Millbrae’s western hillside homes and newer builds off Trousdale Drive is a growing request. Homeowners want the longevity and the wind performance, and Millbrae’s persistent fog actually favors metal over asphalt in one key way: metal sheds algae and moss instead of feeding it. A full standing-seam metal roof on an average Millbrae rancher typically runs $28,000 to $55,000. Stone-coated steel tiles run $24,000 to $48,000. These are installed prices including tear-off, underlayment, and edge detailing.
Standing Seam for Windward Slopes
Winter northerlies hit the north-facing slopes of Millbrae’s hillside homes hard. Standing-seam panels, properly clipped and seamed, carry a wind rating that matters here. We install panels over a high-temperature underlayment with proper setbacks from ridge caps and valley flashings.
Stone-Coated Steel for Fog Zones
For homeowners who want the look of shake or tile without organic material that moss colonizes, stone-coated steel is the practical answer on foggy Millbrae lots. The stone coating shrugs off marine layer moisture, and the panels lock together over your existing roof structure without the weight of concrete tile.
Trusted Brands We Service in Millbrae
We install and repair roofs from GAF, Atlas, and CertainTeed, and our service work covers Tamko and Boral systems as well. Because we run Millbrae projects weekly, we keep common flashing profiles, ridge caps, and underlayment rolls stocked and ready. No waiting two weeks for a special-order drip edge when your roof is open. If your existing roof uses a brand we carry, we can match it. If we’re replacing the whole roof, we’ll walk you through the manufacturer-recognized options that fit Millbrae’s wind and fog conditions.
Common Roofing Company Problems We See in Millbrae Homes
- RSIP-sealed attics rotting decking from the inside. Sound-insulation contractors foamed every attic penetration decades ago. No airflow means condensation, and condensation means soft decking, even under shingles that look fine from the street.
- Two or three shingle layers over original skip sheathing. Most Millbrae ranchers built between 1945 and 1965 were never designed for multiple overlays. The decking flexes, and an architectural shingle’s wind rating doesn’t mean much when the wood under it moves.
- Moss and algae on north- and west-facing slopes. The persistent marine fog keeps those faces damp well into the afternoon. Granule loss accelerates, and the roof ages unevenly compared to the south side.
- Missing or failed ventilation after RSIP retrofits. Homes that got the airport sound package often lost all passive attic airflow. Re-roofing means designing a new ridge-and-soffit vent system before the deck can dry in properly.
Pricing for Roofing Company in Millbrae, CA
Here’s what actual Millbrae homeowners can expect to pay. Roof repairs in Millbrae run $350 to $1,800 for typical flashing, shingle, or valley work. Roof inspections run $195 to $450, credited toward the job if you move forward. Full roof replacement on a standard Millbrae rancher runs $14,000 to $28,000 depending on tear-off count, decking condition, and ventilation scope. Tile roofing on western hillside homes runs $24,000 to $52,000. Flat-roof replacement on Millbrae commercial buildings runs $18,000 to $45,000. The single biggest variable in Millbrae is the RSIP factor: if your attic is foam-sealed, the new vent system is part of the job, and we quote it in writing upfront. Call (743) 200-8347 for a free estimate, and we’ll send Grant Whitlock or a senior technician to walk your roof with you.
We Also Serve Cities Near Millbrae
Our crews cover Millbrae and the surrounding Peninsula. You’ll see our marked vans in San Bruno, Burlingame, South San Francisco, and Pacifica on a regular week. If you’re in one of those cities and need a Roofing Company in Millbrae that knows the SFO flight-path housing stock, call the same number, (743) 200-8347, and we’ll get you scheduled. The same written pricing and badge-at-the-door standard applies.
Serving Millbrae, CA - Our Local Coverage Area
We’re based in the Millbrae 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 Millbrae
In Millbrae, the most common cause is trapped attic moisture from RSIP-era foam sealing. Your shingles can look perfectly serviceable while the decking underneath has been rotting for years. The only way to know is to get into the attic and probe the decking from below, which we do as part of every inspection. Call (743) 200-8347 and we’ll check it with you.
Yes, it measurably does. Persistent marine fog keeps north- and west-facing roof faces damp for hours longer than south-facing slopes, which accelerates moss, algae, and lichen growth that strips granules from asphalt shingles. Homeowners on west-facing hillside lots off Trousdale Drive should expect those slopes to reach replacement 4 to 7 years earlier than the rest of the roof.
We regularly find outdated wiring, undersized framing, and failed waterproofing in Millbrae’s post-war ranchers once walls and ceilings come open. The key is how a contractor handles those discoveries. We inspect first, write allowances into the contract, and any surprise gets priced and approved in writing before we pick up a tool. No change orders dropped on you after the drywall is open.
If your home went through the SFO Residential Sound Insulation Program, most likely yes. The RSIP contractors foam-sealed attic penetrations to block aircraft noise, which also eliminated passive ventilation. A proper re-roof on an RSIP home means cutting in a new ridge vent and soffit vents so the new decking doesn’t rot like the old decking did. We quote this as part of the written price, not as a surprise later.
Line up the same scope. Compare tear-off count, decking allowance, ventilation scope, underlayment type, shingle brand and line, and whether the price is fixed or can move. If one Millbrae bid is $4,000 lower but doesn’t mention RSIP ventilation or skip-sheathing decking, the price will move once the old roof comes off. Ours includes what the roof actually needs, in writing, before we start. Call (743) 200-8347 and we’ll put the numbers in front of you.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Millbrae since 2000.