Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Installation Across Woodside
A full roof installation by our Roofing Company - Woodside team typically runs $38,000 to $95,000 for a custom estate, depending on square footage, pitch, and whether you choose standing seam metal or Class A composite tile. We know Woodside’s roads – Canada Road, Kings Mountain Road, Portola Road – and we schedule carefully because every job here means winding access for material trucks and careful staging on sloped lots. Call (743) 200-8347 for a free estimate and a written price before any work starts.
Why Mercer Roofing Is Woodside’s Preferred Roof Installation Company
Woodside homeowners tell us the same thing: they want to know exactly who is at the door before they open it. Every Mercer technician sends their name and photo ahead of the visit, then badges in with a photo ID when they arrive. That Threshold Standard is why homeowners who live alone, parents with young kids, and older residents choose us over the anonymous crew in an unmarked truck.
Founded in 2000, Mercer Roofing is part of the Threshold Group family of home-service companies. Each location is independently owned and operated, and every technician is background-checked, identity-verified, and uniformed. No exceptions.
Our reputation in Woodside rests on jobs done right the first time, written guarantees on every repair, and a 365-Day Done Right Promise. If the work isn’t right within a year, we return and make it right.
Standing Seam Metal Roof in Woodside
Standing seam metal roof replacement in Woodside runs $52,000 to $110,000 on the custom estates we work on, and the insurance angle is the reason so many homeowners choose it. A standing seam metal roof is Class A fire-rated, which solves the CAL FIRE VHFZ non-renewal problem directly. The first sentence of this section is that simple: in Woodside, metal isn’t a style choice. It’s an insurability decision.
Grant Whitlock, who leads our roofing team, puts it plainly: “Woodside’s shade canopy and rainfall mean a roof here works harder than the same roof in Menlo Park. Moss lifts shingle edges. Debris dams block valleys. If we’re going to tear off and start over, the new system has to handle moisture the way the old one couldn’t.”
Class A Fire-Rated Assembly
We install standing seam panels over a full Class A assembly: fire-rated underlayment, ice and water shield in valleys, and enhanced ridge venting. The goal is a roof that keeps you insurable under current VHFZ mapping, not one that just looks good from the street.
Ventilation and Moisture Management
Wood in shade rots. Every standing seam roof we install in Woodside includes ridge venting and intake ventilation sized for our damp canopy conditions. A metal roof without proper ventilation traps moisture against the decking and shortens the life of the whole assembly.
Tile Roof in Woodside
Tile Roof installation in Woodside runs $38,000 to $78,000, and it’s a natural fit for the Spanish-revival and Mediterranean estates off Portola Road and Canada Road. Tile roofs are Class A fire-rated when installed over the right underlayment, which means they also clear the insurance non-renewal barrier that’s forcing wood shake replacements across Woodside.
The catch with tile in Woodside is weight and complexity. Many of these 1960s and 1970s custom homes were framed for wood shake, not tile. Before a tile roof goes on, we verify the structure can carry it, and we replace rotted decking as needed. The job often includes re-flashing every dormer, chimney, and valley with copper or heavy-gauge galvanized steel.
Concrete and Clay Options
We work with concrete tile and genuine clay tile. Concrete tile carries a lower cost per square foot; clay tile matches the look of the original barrel-tile homes along Mountain Home Road and in the older portions of the Town Center.
Underlayment Is the Real Roof
In Woodside’s damp canopy, tile is only as good as what’s under it. We install a full high-temperature underlayment system with sealed fasteners, so when the inevitable needle and acorn dams form, water can’t back up under the tile and into your attic.
Trusted Brands We Service in Woodside
We install and service GAF, CertainTeed, and Owens Corning roofing systems, and we carry the ice and water shield, ridge vents, and fasteners those manufacturers specify for our climate. That means when you need a warranty claim handled, we have the documentation and the material specs to back it. We’re also experienced with Roof Installation across the full range of manufacturer-recognized shingle brands, including IKO, Atlas, Tamko, and Boral. For Woodside’s steep, complex rooflines, we typically specify GAF or CertainTeed because their Class A assemblies hold up under our moss pressure and fire-zone rules.
Common Roof Installation Problems We See in Woodside Homes
- Moss and lichen lifting shingle edges. Woodside’s dense coast live oak and redwood canopy keeps roofs damp nine months of the year, and moss grows into the sealant strips and pries shingle edges up. A new installation has to include zinc or copper strips along the ridges to slow regrowth.
- Debris dams in valleys from redwood needles and acorn caps. Debris backs up water under the underlayment, and the first sign is often a ceiling stain below a valley, not a visible roof leak. Our installations include wider valley flashing and debris-shedding designs made for this specific problem.
- Insurance non-renewal on original wood shake. CAL FIRE VHFZ rules mean a structurally sound wood shake roof can make a Woodside home uninsurable. We document every layer of the replacement so you have the paperwork to get your policy reinstated.
- Original decking that looks fine from above but is rotting from trapped moisture. We see it most on north-facing roof planes under tree canopy. Our crews inspect the decking from the attic side before we tear off, so you get an accurate decking quote with no surprises after the old roof comes off.
Pricing for Roof Installation in Woodside, CA
Here’s what actual Woodside jobs cost in 2026. A tile roof replacement on a 3,500-square-foot single-story estate runs roughly $38,000 to $65,000. Standing seam metal on the same house runs $52,000 to $95,000. Decking replacement, when needed, adds $12,000 to $30,000 depending on how much of the original 1960s-1980s plywood or skip sheathing has rotted under the moss and trapped moisture.
What moves the price: roof pitch (Woodside’s steep custom rooflines add labor and staging cost), number of valleys and dormers, access for material trucks on narrow private lanes, and whether we’re pulling permits through San Mateo County. Every Mercer job starts with a written price. No work begins without it. Call (743) 200-8347 for a free estimate and a line-item quote.
We Also Serve Cities Near Woodside
Mercer Roofing handles roof installation across the Bay Area and beyond. We serve Roof Installation in Woodside and also work in Los Angeles, San Diego, San Jose, and San Francisco. If you split time between Woodside and a home elsewhere in California, the same background-checked, photo-badged crews can serve both properties.
Serving Woodside, CA - Our Local Coverage Area
We’re based in the Woodside 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 Installation in Woodside
Yes – we handle insurance-driven replacements in Woodside constantly, and the first thing we do is document every layer of the new Class A assembly: fire-rated underlayment, Class A shingles or metal panels, valley flashing, and ridge vents. Your insurer wants proof of the fire-rated materials, not just a receipt. Call (743) 200-8347 and ask for a written scope of work your agent can submit with the reinstatement request.
Yes, and this is where a generic bid misses the mark. Woodside’s rainfall and canopy shade mean we specify a synthetic high-temperature underlayment with a sealed nail bed, plus ice and water shield in every valley and along every eave. In Menlo Park, a standard felt underlayment might squeak by. Here, it rots from the constant dampness. That upgrade costs about $2,800 to $5,500 on a typical estate roof and buys you decades of dry attic.
Yes, by designing the valleys to shed debris instead of trapping it. We install wider valley flashing, run the underlayment continuously through the valley with no vulnerable seams, and where canopy is heavy, we add debris-shedding baffles at gutter transitions. It doesn’t eliminate the need for guttering, but it ends the recurring interior water intrusion. Call (743) 200-8347 and we’ll look at your specific valley configuration and give you a written price.
Standing seam metal runs 20-35% more than a Class A composite shake replacement. On a 4,000-square-foot Woodside estate, the metal roof might run $68,000 to $110,000 while the composite Class A shake runs $48,000 to $72,000. But the metal roof outlasts the composite by decades, carries a stronger manufacturer warranty, and sheds moss and needles more easily. If you’re looking at 30 years in this house, the higher upfront cost pencils out. We’ll price both options in writing so you can compare line by line.
Not always, but on 1960s and 1970s Woodside homes under heavy oak canopy, we find rotted decking on roughly half the tear-offs, especially along north-facing planes and valleys where the original skip sheathing has been damp for decades. We inspect from the attic side before tear-off and give you a per-sheet decking price in the written estimate, so you know exactly what any decking replacement will cost if we find damage. No change orders, no “we discovered a problem” pricing.
Call Mercer Roofing at (743) 200-8347 for a free roof installation estimate in Woodside. A live person answers 24/7, our technicians send their name and photo before they arrive, and you’ll get a written price before a single nail is driven.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Woodside since 2000.