Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterRoofers in Altadena, CA
Roofers in Altadena work on homes that demand more from a roof than almost anywhere else in Los Angeles County. The housing stock runs to steep-pitched Craftsman and Spanish Revival homes built between 1910 and 1940, many still wearing original wood shingles, and the location at the base of the San Gabriel Mountains means extreme heat, UV exposure, and dry Santa Ana winds hit roofs hard year after year. Since the 2025 Eaton Fire, Altadena homeowners are also navigating one of the largest roof rebuild cycles in the state’s history. Call Brennan Roofing at (361) 320-9467 for a written estimate before any work begins.
Why Altadena Homes Are Different
Altadena sits directly against the San Gabriel Mountains, and that geography shapes every roofing decision here. West-facing slopes take the worst of the Santa Ana winds, which strip granules off shingles and lift the edges of shakes until they crack or tear away. We routinely find roofs in the Christmas Tree Lane and Presidents Streets areas where the windward side has aged years beyond the leeward side. Combine that with summer temperatures that regularly climb past 100 degrees and intense UV at this elevation, and a 20-year shingle rarely reaches its rated life without attention.
The housing stock compounds the issue. Most homes were built between 1910 and 1940, with steep, complex rooflines: gables, hips, dormers, and valleys that shed water well when flashed correctly and leak persistently when they are not. Many still carry original cedar shakes, a material you will find almost nowhere else in LA County today. After the Eaton Fire, a good number of surviving homes have heat-damaged underlayment beneath shingles that look fine from the street. That is a call for inspection before the first winter rain, not a patch job.
Altadena sits within a designated wildland-urban interface zone, which means Class A fire-rated assemblies are now the expectation for most approved roof replacements. Homeowners rebuilding or reroofing need a roofer who understands both the county’s fire code and the historic character of the neighborhood. The two are not mutually exclusive, but they require planning and specific material choices.
Our Main Altadena Services
Altadena homeowners most often call us for full roof replacement and targeted repair work, with inspections often preceding both. Here is what each involves locally.
Roofing Company in Altadena
Our Roofing Company in Altadena service covers full tear-off and replacement, including the cedar shake conversions that are common on pre-1940 homes. We tear down to the decking, replace any rotted or fire-damaged sheathing, install new underlayment, and finish with materials chosen for both fire rating and the home’s original architectural character. On a 1920s Craftsman with steep gables, the right underlayment and flashing detail make the difference between a roof that holds for decades and one that leaks at the first good rain. Every replacement starts with a written line-item price before any work begins.
Roof Repair in Altadena
Our Roof Repair in Altadena service handles the full range of leaks, missing shingles, failed flashing, and wind damage that come with a mountain-adjacent location. We pay particular attention to valleys, chimney flashing, and the west-facing rake edges where Santa Ana winds do the most damage. Many repairs in Altadena reveal more than one problem once we pull back the surface layer: a cracked shake on top often means dried-out underlayment beneath. We document what we find, put the repair price in writing, and stand behind it with the 365-Day Done Right Promise.
Roof Inspection in Altadena
Our Roof Inspection in Altadena service gives homeowners a documented condition report, which matters more here than in most cities. Post-fire, the question is not just whether the roof looks intact; it is whether heat compromised the underlayment, seals, and flashing in ways that will fail later. We inspect the surface, the flashing, the attic side of the decking where accessible, and the drainage paths. Homeowners receive a written report with photos and a list of prioritized issues, so they can plan repair or replacement on their schedule, not after a leak appears.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Altadena
We install and repair roofs using materials from our brands including GAF, CertainTeed, and Owens Corning. Our team stocks common flashing, fasteners, and sealants locally, which means most repair materials do not need to come from a distant warehouse. That keeps turnaround tight on both repairs and replacements.
Pricing for Roofers in Altadena, CA
Here are the typical price ranges Altadena homeowners can expect for common roofing work. These reflect the local market as of 2026, including the rebuild demand after the Eaton Fire.
| Service | Typical range in Altadena |
|---|---|
| Roof inspection | $180 – $350 |
| Minor repair (shingles, flashing, small leak) | $350 – $900 |
| Moderate repair (section replacement, valley work) | $900 – $2,500 |
| Major repair (structural decking replacement, large tear-off patch) | $2,500 – $7,000 |
| Full roof replacement (asphalt shingle, per square) | $550 – $850 |
| Full roof replacement (standing seam metal, per square) | $1,200 – $2,200 |
| Full roof replacement (concrete tile, per square) | $800 – $1,600 |
| Full roof replacement (synthetic shake, per square) | $950 – $1,800 |
| Underlayment replacement (per square) | $150 – $400 |
| Decking repair (per sheet) | $150 – $350 |
What pushes a roof cost up in Altadena is almost always the same list: steep pitches that slow the crew, multiple roof planes and valleys, hidden decking damage, and the Class A fire-rated underlayment and materials now expected in the wildland-urban interface zone. Whatever the job, the price goes on paper before any work starts, and it does not move at the door.
Neighborhoods We Serve in Altadena
We work across all of Altadena, from the foothill streets near the Cobb Estate to the flats closer to Woodbury Road. Our techs know the difference between a 1920s bungalow near Altadena Drive and a newer hillside home off Lake Avenue, and we stock our trucks accordingly.
- Christmas Tree Lane (Santa Rosa Avenue)
- Presidents Streets (Washington, Adams, Jefferson)
- The Meadows / Country Club area
- Upper Hastings Ranch
- Altadena Golf Course vicinity
In most cases, we can have a tech to an Altadena home within one to two business days for an estimate, and faster for active leaks.
Service Area – Cities Near Altadena
We also serve homeowners in the surrounding San Gabriel Valley and foothill communities. If you are in Pasadena, CA, La Canada Flintridge, CA, San Marino, CA, or Sierra Madre, CA, our crews cover those areas with the same written-price standard and the same 365-Day Done Right Promise. The mountains do not stop at the city line, and neither do the roof problems that come with them.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena 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 Roofers in Altadena
For active leaks or storm damage, we can typically dispatch a tech to Altadena within one business day. For estimate requests and non-emergency inspections, most homeowners are scheduled within one to two business days. Call (361) 320-9467 and a live person will answer, day or night.
Yes, a full roof replacement in Altadena requires a permit, and the county now expects Class A fire-rated assemblies for most homes in the wildland-urban interface zone. We handle permit paperwork and schedule inspections as part of the job. Repair work that does not change the roof structure typically does not require a permit, but we confirm this on a case-by-case basis before starting.
Yes. We are actively working with Altadena homeowners on both full rebuilds and reroofs of surviving homes. Rebuild timelines in the county have been lengthy, and we schedule roof work to coordinate with general contractors and structural inspections. The best way to get on our schedule is to call (361) 320-9467 with your property address and the current state of the roof.
We do, and we treat those jobs differently than a standard shingle replacement. Original cedar shakes on a pre-1940 home often sit on decking that has never been exposed, and what we find underneath drives the scope. We write the price after we tear down and inspect, not before, and you will see every line item on paper before the new roof goes on.
For a written estimate on any roofing work in Altadena, call Brennan Roofing at (361) 320-9467. The price goes on paper before any work starts, and every job is backed by the 365-Day Done Right Promise in writing.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Altadena Customers Say
"Replaced a rotted fascia board along with the roof edge. Matches the trim."
- Lou H."They gave me a warranty in writing and stood behind it."
- Irene G."Quality work and clear communication. Rain pushed the start by two days, which is fair, but we were hoping to be done sooner."
- Cathy N.