Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Repair Across Altadena
Roof repair in Altadena costs between $450 and $1,800 for most residential work, with a typical leak repair running $350 – $700 and a partial tear-off with new underlayment running $1,200 – $4,500. Those numbers reflect what we see week to week on Altadena homes, from 1920s bungalows off Lake Avenue to newer construction near Loma Alta Park. We dispatch crews to Altadena daily, and a live person answers when you call (361) 320-9467, so you’ll know the plan before we set foot on your roof.
Altadena isn’t a simple roof town. Steep Craftsman gables, original cedar shakes, and post-Eaton Fire underlayment damage all change what a repair actually needs. That’s why our quotes start with a real inspection, not a guess from satellite imagery.
Why Brennan Roofing Is Altadena’s Preferred Roof Repair Company
Travis Oakley leads our Altadena repair crews, and the standard we run is the same on every job: background-checked technicians in uniform, a written price before any work starts, and a 365-Day Done Right Promise in writing on every repair. Homeowners along Altadena Drive and in the Presidents Streets area have hired us because the quote on paper is the price at the end, and if a repair fails within a year, we come back at no charge.
We work on tight lots, shared driveways, and historic properties without leaving the site a mess or the neighbors filing complaints. Our crews stage materials on the street side when a driveway is too narrow, and we coordinate with adjacent homeowners when a shared wall or party line affects access. Small things, but they keep a repair moving without drama.
Response time to Altadena is typically same-week for non-emergency work, with faster scheduling for active leaks. We keep our own crews, not subcontractors, so the person who inspects the roof is the person who explains the repair to you.
Metal Roof Repair in Altadena
Metal roof repair in Altadena usually means resealing seams, replacing compromised fasteners, or fixing flashing where a metal panel meets a chimney or a valley. Standing-seam metal roofs hold up well under the San Gabriels’ UV load, but the fasteners and seam tapes are the weak points after years of thermal expansion and Santa Ana wind cycling.
Seam and Fastener Work
A failed seam on a metal roof in Altadena will show as a rust line or a fine leak at the decking edge. We replace the neoprene washers on fasteners, reseal the seam with a manufacturer-matched sealant, and check the clips underneath for wind fatigue. Typical cost runs $600 – $1,400, depending on linear footage.
Flashing Transitions on Metal Roofs
Where a metal roof meets a chimney, skylight, or wall transition, the flashing takes the abuse. On Altadena homes built before modern flashing details, we often find corroded galvanized metal that needs replacement with a matching gauge. This work runs $500 – $1,200 per penetration and is the most common metal roof repair we quote.
Commercial Roof Repair in Altadena
Commercial roof repair in Altadena covers low-slope and flat roof systems on the small commercial buildings along Fair Oaks Avenue, Lincoln Avenue, and the Lake Avenue corridor. Built-up roofs, modified bitumen, and TPO membranes each fail differently, and the repair has to match the existing system or it won’t bond properly.
Flat Roof Patching and Coating
A flat roof patch on an Altadena commercial building typically costs $800 – $2,500, depending on the size of the repair and the roof’s condition. We cut back the blistered membrane, dry the insulation underneath, and apply a torch-down or cold-applied patch that matches the existing system. Coating a small commercial roof runs $3 – $6 per square foot.
Drainage and Parapet Repair
Flat commercial roofs fail at their drains and parapets first. Clogged scuppers on an Altadena roof can pond water after the rare heavy rain, and that water finds its way through every seam. We clear and re-seal drains, rebuild parapet cap flashing, and fix the membrane where standing water has delaminated it.
Trusted Brands We Service in Altadena
We repair and replace roofs built with GAF, CertainTeed, Owens Corning, Atlas, and Tamko materials, and we stock matching parts locally for Altadena customers so a repair doesn’t wait on a parts order. When you have a 1920s cedar shake roof with a patched section, we match shake profiles and grade so the repair doesn’t look like a band-aid. The same goes for Atlas and Tamko shingle colors on post-fire rebuilds. We tell you plainly what material matches, what doesn’t, and why.
Common Roof Repair Problems We See in Altadena Homes
- Heat-damaged underlayment under intact shakes. The Eaton Fire’s radiant heat baked underlayment on thousands of roofs that never burned. Shakes look fine from the ground, but the paper below is brittle and fails within a season if we don’t probe it.
- Santa Ana wind scouring on west-facing slopes. Homes on the west sides of neighborhoods like Altadena’s foothill streets and the Meadows take direct wind off the San Gabriels. Shakes lift, fasteners loosen, and flashing tabs fatigue faster than anywhere else in the LA basin.
- Failed valley flashing on steep historic roofs. Craftsman and Spanish Revival homes with steep gables concentrate water in narrow valleys. Original galvanized flashing from the 1920s and 30s is often paper-thin by now, and the leak shows up on a ceiling far from the actual entry point.
- Chimney and skylight penetration leaks after rebuilds. Post-fire rebuild work has put new chimneys and skylights on old roof frames. When the transition wasn’t flashed correctly, the first decent rain sends water straight through. We find and fix these regularly.
Pricing for Roof Repair in Altadena, CA
Here’s what we quote in Altadena right now, in real dollars. A leak repair on an asphalt shingle roof runs $350 – $700. Flashing repair at a chimney or valley runs $450 – $900. A vent boot replacement runs $250 – $500. A flat roof patch runs $800 – $2,500. A partial tear-off with new underlayment and matching shakes runs $1,200 – $4,500. A full roof repair on a post-Eaton Fire surviving home, where the underlayment and some decking must be replaced, runs $6,000 – $15,000 depending on slope and size.
What moves the price in Altadena is access. A steep west-facing slope with a narrow side yard costs more to stage and work safely. A tight lot with shared walls and a single driveway means we hand-carry materials and schedule around your neighbor’s access, which adds labor time. We put all of that on paper before any work starts. Call (361) 320-9467 for a free estimate on your roof.
We Also Serve Cities Near Altadena
Our crews handle Roof Repair throughout the west San Gabriel Valley, so if you’re in Pasadena, La Cañada Flintridge, San Marino, or Sierra Madre, the same written-price standard applies. Altadena remains our focus for historic and fire-zone repair work, and we schedule those cities alongside our Altadena routes daily.
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 Roof Repair in Altadena
Because Altadena’s post-Eaton Fire housing stock often hides heat-damaged underlayment beneath shakes or shingles that look sound from the ground, so we can’t know if a simple patch will hold or if a partial tear-off is required until we probe the roof. A phone quote based on satellite imagery would be a guess, and you’d be the one paying for that guess when the repair fails. We schedule a free inspection, put a written price in your hand before any work starts, and that number doesn’t move at the door. Call (361) 320-9467 to set that up.
Yes, on some Altadena properties a repair that changes materials or roof profile can trigger a design review through the county’s historic preservation overlay, especially on contributing structures in the historic districts near Christmas Tree Lane and the Craftsman corridors off Mariposa Street. For a true repair that matches existing materials and profile, we usually move without review. We check the property’s designation before quoting, so you’re not surprised at inspection. Call (361) 320-9467 and we’ll check your address.
We stage materials on the street side or in a single designated zone, hand-carry what we can’t roll, and we notify adjacent homeowners before we block any shared driveway or walkway, even for a half hour. On lots where the roof is only accessible from the neighbor’s side, we get written access permission ahead of time. This keeps the job moving and keeps your neighbors from calling the county. It’s standard practice on every Altadena repair we run.
After the Eaton Fire, Los Angeles County requires Class A fire-rated assemblies on rebuilt and substantially repaired roofs, which means fire-rated underlayment, ember-resistant vents, and a Class A outer material like asphalt shingles, metal, or specific rated shakes. On surviving homes, we often find heat-compromised underlayment that must be replaced even if the outer roof looks fine. We build the repair to the county’s WUI code, pull the permit when required, and the inspection passes before we call it done. Call (361) 320-9467 for an honest look at what your roof actually needs.
A metal roof repair in Altadena runs $500 – $1,400 for seam or flashing work, and a commercial flat roof patch runs $800 – $2,500, with coating at $3 – $6 per square foot. We price by linear footage for seams, by penetration for flashing, and by square footage for membrane work. The written quote includes all staging, access coordination, and cleanup on tight lots, so the number you see is the number you pay. Call (361) 320-9467 for a free estimate.
Written by Travis Oakley, Owner at Brennan Roofing, serving Altadena under the Garrison Standard since 2000.