Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
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AfterFast, Reliable Roof Replacement Across Foster City
A full roof replacement in Foster City typically runs $14,000-$28,000 for a standard single-family home, depending on size, pitch, and decking condition. Most jobs take 3-5 working days once materials are staged. We answer the phone around the clock at (945) 303-9821 and we’ll give you a written price before a single nail is driven.
Foster City is not a generic roofing market. The whole city sits on bay-fill, surrounded by water on three sides, and the salt-laden wind off San Francisco Bay chews through standard roofing hardware faster than almost anywhere else on the Peninsula. When a Foster City homeowner calls us about a roof replacement, we already know what we’re going to find before the ladder goes up. Greg Holloway runs our crews here, and he’s the person who makes sure the right spec goes into your written quote from day one.
Why Tilehurst Roofing Is Foster City’s Preferred Roof Replacement Company
Foster City homeowners tend to ask sharper questions than most, because a lot of them have already paid for a roof repair that didn’t hold. We get it. Tilehurst Roofing is part of the Kingswell family of roofing companies, founded in 2000, and we built our Foster City service around the things people here actually care about: a live person answers the phone 24/7, the crew shows up in the window we gave you, and the price we put in writing before the work starts is the price you pay.
Every Tilehurst technician is background-checked and wears a uniform, so when someone is on your roof you know exactly who it is. That matters more in Foster City than in most places, because so much of the housing stock is townhomes and low-rise condos where a neighbor’s roof is often fifteen feet from yours. We also carry material options from seven manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – so the product we recommend is the one that fits a Foster City roof, not whatever happens to be in the truck.
And we back every job with the 365-Day Done Right Promise. If something isn’t right within a full year, we come back and make it right. That promise is documented, not spoken. Written guarantee on every repair, delivered before the crew leaves your property.
New Roof Installation in Foster City
A new roof installation in Foster City is a full tear-off and replacement, including new underlayment, decking repair or replacement as needed, and a complete shingle or membrane system. For a typical 1,800-2,400 square foot Foster City ranch or townhome, a full new roof installation runs $16,000-$28,000 depending on decking condition and material grade. Homes that need extensive sheathing replacement trend toward the top of that range, and we’ll show you the line-item numbers before you commit to anything.
Decking Inspection Before Anything Gets Nailed Down
In Foster City, the decking is the wild card. Original 1960s and 70s sheathing has spent fifty years absorbing bay moisture, and we routinely find soft spots and rafter-tail rot that an overlay would have hidden. We inspect every sheet before quoting, and we replace what’s rotted. You don’t pay for decking you don’t need, and you don’t get a new roof nailed to a compromised frame.
Marine-Grade Hardware as Standard
We don’t ask whether you want stainless-steel fasteners on a Foster City roof. We spec them. Standard galvanized nails and flashing that hold up fine in San Mateo show rust bleed and fastener failure within a decade here, because the salt fog is relentless. On every new roof installation in Foster City, our crews use stainless-steel or hot-dipped galvanized fasteners and marine-grade flashing at every penetration.
Reroofing in Foster City
Reroofing in Foster City means removing the old roof and installing a new one, but the term gets used differently depending on whether the existing decking is sound enough to keep. A straightforward reroof over intact sheathing on a Foster City home runs $14,000-$20,000. If the decking has to come up too, you’re into full replacement territory, and we’ll tell you that before you spend a dollar.
When an Overlay Makes Sense, and When It Doesn’t
We rarely recommend a second layer in Foster City. The older houses here carry enough weight already, and a second layer hides the condition of the sheathing underneath. On a 1969 tract ranch, the decking is the question. We’ll look at it, show you what we find, and recommend the approach that protects the structure underneath.
Low-Slope Sections and Bay Wind
A lot of Foster City homes have low-slope or shallow-pitch sections, and those are the spots where wind-driven rain gets in. Reroofing those sections means paying attention to drip edge, valley flashing, and underlayment laps, not just the shingle pattern. We do a two-layer waterproofing detail on all low-slope sections because the onshore wind pushes water sideways in ways a steep roof never sees.
Trusted Brands We Service in Foster City
We install and service full roof systems from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. When we recommend Roof Replacement materials for a Foster City home, the salt-air environment is part of the decision. Atlas and Tamko architectural shingles carry strong wind ratings and hold up well under marine fog when paired with the right underlayment, and Boral’s concrete and composite tiles handle the bay climate without the oxidation issues we see on some metal options. Parts and materials for these systems are sourced quickly through our Bay Area supply chain, so Foster City jobs don’t stall waiting on a truck from out of state.
Common Roof Replacement Problems We See in Foster City Homes
- Rusted fasteners and flashing from direct bay salt exposure. We see standard galvanized nails that have rusted to stubs within eight to ten years on Foster City roofs. This is the single most common callback cause on roofs where the original spec didn’t account for marine air, and it’s why we use stainless or hot-dipped galvanized hardware on every job here. The rust bleed and water intrusion at penetrations are preventable with the right spec from the start.
- Rotting sheathing on 1960s and 70s homes. The original wood-framed decking across most of Foster City is hitting the end of its service life at roughly the same time. Decades of humid salt air have worked into the plywood and rafter tails, and we regularly find rot that only shows up once the old shingles come off. A new roof over rotting decking fails from the structure outward, not the surface inward.
- Wind-driven rain at valleys and drip edge on low-slope sections. Foster City’s consistent onshore winds push water sideways into the roof system, especially on the shallow-pitch sections common on tract ranches and townhomes. We see failed sealants at drip edge and lifting at valleys where the original install didn’t account for this. The fix is a full two-layer underlayment detail, not more caulk.
- Premature underlayment breakdown from UV and salt fog. The marine fog here isn’t just moisture; it carries salt that sits on roofing membranes and accelerates UV breakdown when the fog burns off. Underlayment that would last twenty years in Belmont can fail in twelve to fifteen here. We spec synthetic underlayment on Foster City roofs for this reason.
Pricing for Roof Replacement in Foster City, CA
A full roof replacement in Foster City runs $14,000-$28,000 for most single-family homes, with most of our work landing between $16,000 and $22,000. A reroof over sound decking starts around $12,000 for smaller townhomes. The big variables are roof size, pitch, decking condition, and material grade – architectural asphalt shingles from Atlas or Tamko sit in the middle of the range, while Boral tile or high-end CertainTeed systems run higher. When we quote, we show you the line items: tear-off, dump fees, decking replacement by the sheet, underlayment, flashing, shingles, ridge vent, and labor. You’ll know exactly what each part costs. Call (945) 303-9821 to schedule your free, written estimate. It’s yours to keep whether or not you hire us.
We Also Serve Cities Near Foster City
Our crews handle full Roof Replacement in Foster City and the surrounding region. If you’re in Los Angeles, San Diego, San Jose, or San Francisco, we can route a crew and the right materials your way. The same written pricing, the same background-checked technicians, and the same 365-Day Done Right Promise apply on every job we run, wherever the roof is.
Serving Foster City, CA - Our Local Coverage Area
We’re based in the Foster City 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 Replacement in Foster City
Because the salt air off San Francisco Bay corrodes standard galvanized hardware within a decade. Foster City sits on bay-fill with open water on three sides, so the fog that rolls through carries salt that settles on every roof. Standard nails and flashing rust, bleed orange streaks onto the shingles, and lose grip. We spec stainless-steel or hot-dipped galvanized fasteners and marine-grade flashing on every Foster City job, because the alternative is a roof that fails at the penetrations while the shingles still look fine. Call (945) 303-9821 and we’ll walk you through the exact material line items in your quote.
It depends almost entirely on the condition of the decking underneath. Foster City’s housing stock went up between roughly 1964 and 1975, and the original wood sheathing on most of those homes has absorbed fifty years of bay moisture. If the decking is sound, a reroof is often enough. If it’s soft or rotted at the rafter tails, you need full replacement, because a new roof nailed to rotten sheathing won’t last. We inspect for free and show you what we find. Call (945) 303-9821 for a free estimate.
The salt fog accelerates corrosion on flashing and breaks down underlayment faster than inland climates. Metal flashing rusts through and loses its seal at penetrations and valleys. Underlayment gets brittle and cracked from the repeated salt deposition followed by sun exposure when the fog clears. We use marine-grade flashing and synthetic underlayment on Foster City roofs specifically to counter this, because standard materials don’t hold up here. For an exact assessment of your roof, call (945) 303-9821.
Foster City enforces its own building code requirements, and because the city is built on bay-fill, there are additional wind-load and corrosion-resistance expectations baked into how roofs are inspected. You don’t want a roofer who’s never worked in Foster City finding this out mid-permit. We pull permits on every job, handle the inspections, and don’t start work until the paperwork is in order. Call (945) 303-9821 if you want a quote that includes permit coordination.
Look for architectural shingles rated to at least 110 mph, preferably 130 mph, because Foster City gets stronger and more consistent onshore winds than most Peninsula cities. The wind here doesn’t gust occasionally; it pushes constantly off the open bay, and low-slope sections feel it hardest. Both Atlas and Tamko architectural lines include high-wind-rated options that hold up well in the Foster City marine environment when installed with the right underlayment and fasteners. We’ll quote you a specific product and wind rating, not a vague “premium shingle.” Call (945) 303-9821 to get a written price.
Our Roof Replacement Team in Foster City
Most of our Foster City jobs start with a question about whether the old 1970s roof can be patched or needs to come off completely. Our answer is always the same: let’s look at the decking first. We recently completed a full roof replacement on a low-slope ranch in the Marlin neighborhood near Foster City Lagoon, where the original wood-framed decking had soft spots and rusted-through fasteners from decades of salt fog. We stripped the old layers, replaced the rotted sheathing and rafter tails, installed new ice and water shield, set marine-grade flashing at every penetration, and finished with a GAF architectural shingle system using stainless-steel nails and a ridge vent. The homeowner had been told by another roofer that a simple overlay would do it. It wouldn’t have. That’s the difference a local Foster City roofer makes.
We work the same way on every job: show up in the window we gave you, tell you the price before the work starts, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. That’s the Kingswell Way. Greg Holloway runs the Foster City crews, and he’s the one who answers when you have a question after the job is done.
Contact Tilehurst Roofing in Foster City
If you need a roof replacement in Foster City, call (945) 303-9821 today. You’ll talk to a live person, not a voicemail. We’ll schedule a free inspection, give you a written line-item price, and explain exactly what your roof needs – based on what Foster City’s bay air and 50-year housing stock actually demand, not what’s easiest for us. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews work throughout Foster City every week.
Written by Greg Holloway, Owner at Tilehurst Roofing, serving Foster City and the surrounding Peninsula.