Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterFast, Reliable Roof Replacement Across Los Altos Hills
Roof replacement in Los Altos Hills runs $22,000-$65,000 for a typical full tear-off, with complex hillside custom homes often exceeding that when decking replacement and Class A fire assemblies are required. That is the honest range, and it is higher than the valley floor because Los Altos Hills sits almost entirely inside CAL FIRE’s Very High Fire Hazard Severity Zone. We work in this town weekly, we know the code requirements, and we’ll put a written price in your hands before a single shingle comes off. Call (945) 303-9821 to schedule your free estimate.
We are part of the Roof Replacement team at Tilehurst Roofing, a Kingswell family company founded in 2000. Every job we do in Los Altos Hills starts with a written price and ends with a written guarantee before the crew leaves your driveway.
Why Tilehurst Roofing Is Los Altos Hills’s Preferred Roof Replacement Company
Homeowners in Los Altos Hills have been burned before. A contractor no-shows. A price changes at the door. A repair fails within months. That is exactly the pattern Tilehurst was built to break. We answer the phone with a live person 24 hours a day, 7 days a week. We arrive in the window we gave you. And the 365-Day Done Right Promise means if it is not done right, we make it right for a full year after the job – in writing, not as a promise made over a handshake.
Our crews know the specific rooflines of this town. We have torn off cedar shake off La Paloma Road that had been out of fire code for years. We know what bay laurel litter does to valleys on shaded north-facing pitches. We know which flashing details fail first under Diablo wind thermal cycling. That local knowledge is not marketing – it is the difference between a roof that lasts 15 years and one that needs decking replaced again in 8.
Reroofing in Los Altos Hills
Reroofing in Los Altos Hills almost always means a full tear-off, not a re-cover. The reason is specific to this town: most homes built between 1955 and 1985 carry original cedar shake or wood shingle roofs that are now both at end of life and out of compliance with the Class A fire-rating requirement that governs this entire Very High Fire Hazard Severity Zone. You cannot legally re-cover a shake roof with composition in most cases – the assembly underneath does not meet the fire code. A full reroof in Los Altos Hills typically runs $25,000-$58,000 depending on square footage, pitch complexity, and how much decking needs replacement.
Tear-off and decking inspection
Every reroof here starts with pulling the old roof down to the sheathing. On post-and-beam ranches and hillside multi-level homes from the 1960s and 70s, we routinely find decking that has softened under years of oak leaf and catkin buildup holding moisture against the wood. We replace the damaged decking, re-nail the rest per current code, and only then lay the new underlayment and Class A assembly.
Class A fire compliance
The reroof conversation in Los Altos Hills is a fire-compliance conversation before it is a material-selection conversation. Your new roof assembly must carry a Class A fire rating, full stop. We specify products from GAF, CertainTeed, and Owens Corning that meet the rating while giving you genuine design choice – not house-brand limitations.
Flat Roof Replacement in Los Altos Hills
Flat roof replacement in Los Altos Hills shows up most often on the low-slope ranch profiles and modernist post-and-beam sections that define this town’s custom architecture. Unlike a simple flat roof on a commercial building, these residential flat sections usually tie into steep-pitch gables or shed roofs, creating the transition details where flat roofing fails first. A flat roof replacement here runs $12,000-$28,000 for a typical section, with full home combinations of flat-plus-slope ranging higher.
Marine-layer fog and membrane stress
The same Santa Cruz Mountain foothill fog that shades north-facing roof planes also sits on flat roof membranes for months at a time. Standing water is rare here thanks to good drainage design, but constant moisture means fasteners and flashing at the low-slope transitions corrode early. We specify stainless or hot-dip galvanized hardware on every flat section and seal penetrations with marine-grade compounds, not the cheap caulk that cracks within a few seasons.
Leaf litter on low-slope sections
Coast live oak and California bay laurel drop a near-continuous load onto flat roof sections throughout Los Altos Hills. Those leaves pack into scuppers and behind the drip edge, holding water against the membrane and flashing. We include a leaf-management review in every flat roof replacement – proper edge detailing, clean drainage paths, and in some cases a slight re-slope to keep the water moving.
Trusted Brands We Service in Los Altos Hills
We install materials from all three of the major manufacturers most requested in Los Altos Hills: GAF, Atlas, and Boral. You are not stuck with whichever product happens to be in the truck. We order per job, specific to your roof’s pitch, exposure, and fire-code requirements. We also carry the matching flashings, ridge caps, and underlayments locally coordinated through our Bay Area office, so Los Altos Hills homeowners are not waiting on a freight truck from out of state when the job is on the calendar.
Common Roof Replacement Problems We See in Los Altos Hills Homes
- Split-failure moss patterns. Marine-layer fog funnels into the canyons and shades north-facing roof planes, so moss and lichen colonize the north pitch while the south pitch looks fine. That is a Los Altos Hills-specific pattern you will not see on valley-floor homes a mile away in Los Altos.
- Premature underlayment failure from oak and bay litter. The town’s coast live oaks and bay laurels drop leaves, catkins, and twigs that pack tightly into valleys and behind the drip edge. On shaded hillside lots, that organic mat holds moisture against the roof deck year-round, rotting the underlayment even when the tile or composition on top still looks sound.
- Corroded galvanized flashing and fasteners. The standard galvanized hardware that works fine inland corrodes early in Los Altos Hills because of persistent fog moisture and fall Diablo wind thermal cycling. When we tear off, we routinely find flashing that crumbles under a fingernail. We specify stainless or hot-dip galvanized replacements.
- Cedar shake assemblies out of fire code. Original shake roofs on 1955-1985 custom homes are simultaneously at end of life and illegal to re-cover under current CAL FIRE requirements. Every one of these is a full tear-off, and the complex multi-pitch rooflines mean more penetrations and flashing detail than any tract home replacement.
Pricing for Roof Replacement in Los Altos Hills, CA
Here is what we actually see in Los Altos Hills. A straightforward full tear-off and asphalt shingle replacement on a 2,500-3,500 square foot ranch runs $22,000-$38,000. Larger hillside homes with multiple pitches, steep sections, and significant decking replacement run $40,000-$65,000 or more. Flat roof sections add $12,000-$28,000 depending on square footage and membrane choice. The gap between a coastal-spec job and a cheap inland-spec job is usually $3,000-$6,000 at quote time – and the cheap spec costs more within a decade when you are replacing corroded flashing and water-damaged decking. Call (945) 303-9821 for a free written estimate. You will have the actual price in your hands before any work starts.
We Also Serve Cities Near Los Altos Hills
Tilehurst Roofing serves Los Altos Hills and the surrounding Bay Area communities. Beyond Los Altos Hills, our crews regularly work in Los Angeles, San Diego, San Jose, and San Francisco. Wherever your roof is, the same written price guarantee and 365-Day Done Right Promise apply.
Serving Los Altos Hills, CA - Our Local Coverage Area
We’re based in the Los Altos Hills 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 Hills
Because Los Altos Hills sits almost entirely inside CAL FIRE’s Very High Fire Hazard Severity Zone, every roof assembly must carry a Class A fire rating. Cedar shake and wood shingle roofs do not meet that rating, and re-covering them with composition does not bring the assembly into compliance. A full tear-off is the only legal path. Call (945) 303-9821 and we will walk you through the code requirements specific to your home’s square footage and roofline.
Yes. The marine-layer fog that shades north-facing planes and canyon lots in Los Altos Hills accelerates moss growth and corrodes standard galvanized fasteners and flashing years earlier than inland. We specify stainless or hot-dip galvanized hardware, sealed penetrations with marine-grade compounds, and underlayments rated for persistent damp exposure. The coastal-spec job costs more up front, but the inland-spec job costs more within a decade when you are replacing corroded flashing and rotted decking.
Oak leaves, bay laurel catkins, and twigs pack into valleys and behind the drip edge, holding moisture against the roof deck year-round. On shaded hillside lots, we routinely find underlayment failure and softened decking under what looks like a sound roof. Your replacement scope should account for possible decking replacement and improved edge detailing to keep leaf litter from repeating the damage pattern.
The biggest variables are decking replacement, pitch complexity, and whether the quote is coastal-spec or inland-spec. A quote that uses standard galvanized fasteners and cheap sealant will run $3,000-$6,000 lower, but you will pay for that difference within a decade in failed flashing and premature decking rot. We give you a written line-item price so you can see exactly what is in the job and compare apples to apples. Estimates are free – call (945) 303-9821.
We install GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Los Altos Hills specifically, we most often specify GAF, Atlas, and Boral because their Class A assemblies and coastal-appropriate underlayments hold up to the fog, leaf litter, and thermal cycling this town throws at a roof. You get genuine material choice, not whatever happens to be in the truck.
Written by Greg Holloway, Owner at Tilehurst Roofing, coordinating roof replacement in Los Altos Hills through our Bay Area office.