Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
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Before
AfterFast, Reliable Roof Replacement Across Los Altos
Roof replacement in Los Altos runs $18,000 to $45,000 for most single-story ranch homes, with asphalt shingle systems landing between $18,000 and $29,000 and architectural shingle or tile upgrades climbing from there. Most Los Altos replacements take five to eight working days from tear-off to final inspection. The biggest variable isn’t the roof itself. It’s what’s under and over it: decades-old decking softened by moss trapped in 2:12-pitch valleys, protected oak limbs you can’t legally trim, and county-level permitting on the unincorporated parcels that checker this area. We quote every Los Altos roof the same way: after walking it, not before. Call (945) 303-9821 and we’ll set a window and show up in it.
Tilehurst works across Los Altos the way a local crew should. We know which streets fall under city jurisdiction and which fall to Santa Clara County. We know what a heritage oak overhang does to a north slope in January. And we know that a roof on a half-acre lot off University Avenue needs different staging than one on a zero-lot-line street near downtown. That local knowledge changes the quote, the schedule, and the finished roof.
Why Tilehurst Roofing Is Los Altos’s Preferred Roof Replacement Company
Our Los Altos customers tend to be on their second or third roof. That matters to us because it means they’ve already learned what a cheap roof costs. Tilehurst was built inside the Kingswell family of roofing companies, founded in 2000, specifically for homeowners who’ve been burned by a no-show contractor or a price that changed at the door. In Los Altos, our crews work under the Kingswell Way: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, come back if it fails.
Every Los Altos job is led by a background-checked, uniformed crew. Our owner, Greg Holloway, holds every quote to a written-price standard. You get the number in writing before a single nail is driven. If a repair fails inside the 365-Day Done Right Promise window, we return at no charge. That guarantee is delivered in writing before the crew leaves your property, not mailed later. A live person answers our phone 24 hours a day, seven days a week. Not a voicemail box. Not a callback queue. When a Los Altos homeowner calls at 9 p.m. because water is coming through a bedroom ceiling, a person answers.
Our crews serve Los Altos directly, with scheduling coordinated from the brand’s San Francisco Bay Area office. That means you get local crews who know the streets here, plus the accountability of a larger organization standing behind the work.
Asphalt Shingle Roof Replacement in Los Altos
Asphalt Shingle Roof Replacement in Los Altos typically means tearing off a second-cycle 3-tab composition roof from the 1980s or 1990s and replacing it with an architectural shingle rated for a 2:12 to 4:12 pitch. The job runs $18,000 to $29,000 on most Los Altos ranches, depending on decking condition and access. The single biggest cost driver we see in Los Altos is decking replacement. On these low slopes, water that gets past failing underlayment doesn’t run off quickly. It sits. It soaks into plywood or OSB. By the time a homeowner notices a ceiling stain, the decking beneath the shingles may already be soft.
We spec ice and water shield through every valley and along every eave on Los Altos low-pitch roofs. It’s not optional here. Not with the fog, the shaded slopes, and the debris dams that form under protected oaks.
Decking and Underlayment Reality
Most Los Altos homes built between 1952 and 1975 have original 3/8-inch plywood decking that’s now at the end of its service life. We re-deck where the wood has delaminated, and we quote it by the sheet so you know the exact line item before we start. Fixing decking during replacement, not after, is the only way a new roof in Los Altos lasts its full warranty period.
Low-Pitch Shingle Application
A 2:12 slope is near the flat edge of what a composition shingle can handle. The application method matters as much as the product. We use full-coverage ice and water shield, high-temp underlayment, and fastener patterns specifically rated for low-slope installations. The shingle is only the visible layer. What’s underneath decides whether this roof leaks or drains in a Los Altos winter.
New Roof Installation in Los Altos
New Roof Installation in Los Altos covers two situations: new construction on a subdivided or re-built lot, and a full tear-off replacement that’s being treated as a new system because the old roof is too far gone to simply recover. On a new build or a gut renovation, we work with the framing, the truss design, and the permit drawings from day one. For most Los Altos re-roofs, the scope is a complete removal of all existing layers down to the decking, inspection and replacement of decking as needed, new underlayment, new drip edge, new flashing, and new shingles or tile.
New roof installation on open Los Altos acreage has staging realities that compact city lots don’t. Long driveways, detached shops, septic leach-field setbacks, and well heads all constrain where material can be staged and how equipment moves. We scope this before we quote so the price holds.
Open-Lot Staging and Access
On a half-acre or larger parcel, the roof is only part of the job. Where does the dump trailer sit? Can the forklift reach the eave line without crossing a leach field? Is there a detached ADU or shop that shares the roof plane? We answer these questions during the estimate, not after mobilization. Rushed staging decisions leave fascia and drip edge details short, and ponding at the roof edge becomes a warranty problem later.
Flashings, Fascia, and Ridge Details
New roof installation in Los Altos isn’t complete until the flashings are correct. Chimney saddles, pipe boots, valley metal, ridge cap: these are the pieces that fail first on a cheap install. We use manufacturer-matched flashing systems and verify every penetration before the final inspection.
Trusted Brands We Service in Los Altos
Tilehurst Roofing installs material options from seven leading manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That’s not a house brand. That’s a genuine choice. On Los Altos ranch roofs, we often recommend CertainTeed Landmark architectural shingles for the 2:12 to 4:12 pitch, or Atlas storm-rated shingles on lots with open southern exposure. Boral concrete tile comes up on heritage-sensitive streets where homeowners want a heavier profile that matches surrounding homes. We don’t sell from the truck. We spec from the roof. Call (945) 303-9821 and we’ll walk the property and tell you which system fits, and why.
Common Roof Replacement Problems We See in Los Altos Homes
- Moss and lichen on shaded north slopes. The marine layer sits over Los Altos longer than it does in Sunnyvale or Mountain View. Combined with oak canopy shade, it keeps north-facing roof planes damp and colonized. Granule coating erodes years early, and the manufacturer’s warranty dies with it. We see this on nearly every second-cycle roof in Los Altos.
- Eave and valley debris dams from protected oaks. The heritage-tree ordinance makes it illegal to trim protected valley oaks without city approval. So the leaves and acorns keep coming. They pile at the eaves, they clog valleys, and water backs up under failing underlayment. We design roofs here around the debris, not against it.
- Soft decking at the perimeter. On low-pitch ranch roofs, water that gets trapped at the eave edge soaks the decking for weeks each winter. By the time the shingles look worn, the perimeter plywood is often spongy. Re-decking is the single most common change order we add in Los Altos, and we quote it honestly up front.
- County-vs-city permit jurisdiction confusion. Los Altos includes both incorporated city parcels and unincorporated county parcels. The permitting path changes depending on which side of the line your property sits. We handle both, and we know which forms go where before the dump trailer arrives.
Pricing for Roof Replacement in Los Altos, CA
A full roof replacement in Los Altos runs $18,000 to $45,000 for most homes. Asphalt shingle systems on a standard ranch sit between $18,000 and $29,000. Architectural shingle upgrades, heavier underlayment, re-decking, and complex flashing details push the number toward the top of the range. Boral concrete tile or standing-seam metal typically runs $30,000 to $45,000 on a Los Altos ranch. What moves the price: decking condition, roof pitch, access and staging constraints, permit jurisdiction, and the number of penetrations (skylights, chimneys, vents). Every quote is a written, line-item price delivered before any work starts. No change orders on scope we’ve already walked. Call (945) 303-9821 for a free estimate.
We Also Serve Cities Near Los Altos
Tilehurst Roofing crews working in Los Altos regularly handle Roof Replacement projects in the surrounding area. We serve Mountain View, Stanford, Palo Alto, and Menlo Park with the same written-price standard and the same 365-Day Done Right Promise. If you’re in Los Altos or any neighboring city, the process is identical: a live person answers, a crew shows up in the window, and the price you’re quoted is the price you pay.
Serving Los Altos, CA - Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Yes. Unincorporated parcels in the Los Altos area follow Santa Clara County permitting rules, not city of Los Altos rules. That can change inspection timing, setback requirements for staging equipment, and sometimes the required documentation for work near wells or septic systems. We handle both permitting paths and we’ll tell you which one applies to your property before we quote, so the price accounts for it. Call (945) 303-9821 and we’ll confirm your parcel jurisdiction during the estimate.
You usually don’t. Low-pitch roofs in Los Altos, especially the 2:12 to 4:12 slopes on 1950s through 1970s ranches, almost always require full tear-off to the decking to get the underlayment right. Re-covering over an old roof on this pitch is a warranty violation with most manufacturers and it traps the water problems Los Altos roofs already have. We re-deck where needed and quote it per sheet so there’s no surprise.
Only with city approval under the heritage-tree ordinance. Protected valley oaks and other mature trees in Los Altos can’t be limbed or cleared without going through the city’s process. We design around the overhang instead: ice and water shield through the shaded valleys, leaf guards at the downspouts, and fastener patterns that don’t rely on exposed points under debris. A roof on an overhung Los Altos lot needs shorter maintenance intervals than one in Mountain View, and we’ll tell you that honestly.
Look at four line items first: decking, underlayment, flashing, and staging. If one bid assumes no decking replacement and another quotes 12 squares of re-deck, the cheaper bid is gambling with your plywood. If underlayment isn’t listed as ice-and-water shield through the valleys, it’s the wrong spec for a Los Altos low pitch. And if the bid doesn’t mention how material gets to the roof without crossing a leach field or a protected oak, the staging plan hasn’t been thought through. We give you a line-item quote for exactly this reason.
Most southern-exposure lots in Los Altos see moderate wind, not the sustained gusts of higher elevations. Architectural shingles from Atlas or CertainTeed, installed per manufacturer high-wind specs, handle it without issue. We verify the specific lot conditions and match the shingle rating to the exposure. If a heavier system like Boral tile is warranted, we’ll say so in the quote.
Written by Greg Holloway, Owner at Tilehurst Roofing, a Kingswell family roofing company serving Los Altos.