Roof Replacement in Altadena — Written Price, Workmanship Warranty

Fast, Reliable Roof Replacement Across Altadena

Roof replacement in Altadena runs between $16,000 and $42,000 for a typical single-family home, depending on size, pitch, and the fire-rated assembly your property requires. Most jobs we do in Altadena take five to eight working days once materials arrive, and we handle the permit process from first inspection to final sign-off. Since the January 2025 Eaton Fire reshaped what roofs in this foothill community have to withstand, getting the assembly right isn’t optional. Call us at (855) 382-1073 to schedule a free estimate, and we’ll walk you through what your specific roof actually needs.

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Why Barnwood Roofing Is Altadena’s Preferred Roof Replacement Company

We’ve worked on Altadena roofs long enough to know the difference between a bungalow near Altadena Drive and a ranch home on the west side. The framing is different, the sheathing is different, and the code requirements changed dramatically after the fire. Ruben Calloway, who leads our crew, has spent years on foothill rooflines and understands how Santa Ana winds load a ridge differently here than in the flat parts of Pasadena. We won’t quote you a roof assembly built for the basin.

Our reputation in Altadena comes from doing inspection work as a standalone service. That matters because it means when you call us out to look at your roof, we’re paid to assess it, not to sell a replacement. If your roof can be repaired for another five years, we’ll say so. When replacement is genuinely necessary, you’ll get a written line-item quote showing the fire rating, underlayment, venting, and decking work included. No verbal shortcuts, no vague allowances.

Serving the 91001 and 91003 ZIP codes, we schedule estimates across Altadena within a few days of your call. Material lead times vary by product, but we order from manufacturers we work with directly, so we aren’t waiting on a distributor’s backstock. If you’re dealing with an insurance claim, we document every component of the fire-rated assembly for your file.

Flat Roof Replacement in Altadena

Flat Roof Replacement in Altadena usually involves tearing off a built-up or modified bitumen roof on a mid-century ranch or a Spanish Colonial addition and replacing it with a modern membrane system, at a cost of $14,000 to $28,000 for most homes. Many of these roofs near the arroyo and on the west side are original to homes built in the 1950s and 60s, and they’ve been patched over enough that full replacement is the only answer. The Eaton Fire changed flat roof requirements too: any new membrane assembly has to meet the same Class A fire rating as a pitched roof, which means specific cap sheets, coatings, or pavers depending on the membrane type.

Post-Fire Membrane and Edge Requirements

On flat roofs, embers collect at parapet walls, scuppers, and edge details. That’s why we install non-combustible drip edge and ember-resistant venting on every Altadena flat roof we replace, even when the older membrane adjacent to yours didn’t have it. A cheap quote will often skip these details because they don’t affect how the roof performs in dry weather. They absolutely affect how it performs when the next ember storm hits.

Drainage and Santa Ana Wind Loads

Flat roofs in Altadena take more abuse from Santa Ana events than people expect. A built-up roof with loose gravel can shed material in sustained wind, and a single-ply membrane that wasn’t properly adhered will lift at the seams. We specify wind-rated adhesives and fastening patterns appropriate for foothill exposure, not the minimums used for coastal or basin flat roof work.

Roof Installation in Altadena

Roof Installation in Altadena for new construction or major additions typically ranges from $18,000 to $38,000, with the framing, decking, and fire-rated assembly driving most of the cost. If you’re rebuilding after the Eaton Fire or adding onto a surviving home, the roof has to be designed into the building envelope from the start, not treated as a finish trade. We work with your architect or GC to make sure the assembly detail you submit for permit meets current Title 24 and Chapter 7A requirements.

New Construction and Rebuilds

New homes and full rebuilds in the burn scar must be built with Class A assemblies from the deck up. That starts with the right rated decking or sheathing overlay, then moves to a compliant underlayment, fire-rated ridge and soffit venting, and the correct shingle or tile product. We have installed GAF, CertainTeed, and Owens Corning systems on Altadena rebuilds since the fire, and we document each component for the inspector and the insurance carrier.

Decking and Skip-Sheathing Overlays

On homes that survived, especially the Craftsman and Spanish Colonial stock from the 1910s through the 1940s, original skip-sheathing is still common. New underlayment and shingles cannot be nailed directly to spaced boards and meet code. We overlay with rated plywood or OSB before installing membrane and roof covering. This is a line item cheap bids leave out, and it’s the first place a project goes sideways mid-tear-off.

Trusted Brands We Service in Altadena

We install and service roofs from GAF, CertainTeed, Owens Corning, and other major manufacturers, and we’ll help you compare their fire-rated product lines side by side for your Altadena home. Because we source from multiple brands rather than carrying one line, the recommendation you get is based on your roof’s exposure and your budget, not what a sales rep has to move. That matters when you’re choosing between a GAF Timberline HDZ and a CertainTeed Landmark for a wind- and fire-rated assembly.

Common Roof Replacement Problems We See in Altadena Homes

• Underlayment failure during Santa Ana winds. Standard felt underlayment, especially on older homes where it was never upgraded, can tear or peel off in sustained dry wind. Once underlayment lifts, any rain that follows gets into the decking. We install synthetic, wind-rated underlayment on every Altadena job as a result.
• Ember infiltration through older venting. Homes that survived the Eaton Fire often still have standard box vents or open eaves that would let embers into the attic. Replacement requires ember-resistant venting and non-combustible drip edge at the eaves and rakes. It’s a code item now, not an upgrade suggestion.
• Skip-sheathing on pre-war bungalows. The 1920s Craftsman and Spanish homes near Altadena Drive and the arroyo often have spaced board sheathing that cannot support modern membrane and shingle systems. We overlay these decks with rated sheathing before installing anything else. Cheap quotes omit this and then surprise the owner mid-project.
• Insurance-driven documentation gaps. Carriers in the 91001 ZIP are asking for proof of Class A assembly compliance before renewing or discounting policies. We provide manufacturer compliance certificates and permit sign-off for every fire-rated component, so your file supports the renewal conversation.

Pricing for Roof Replacement in Altadena, CA

We Also Serve Cities Near Altadena

In addition to Roof Replacement in Altadena, we serve Pasadena, La Cañada Flintridge, East Pasadena, and San Marino. Each area has different code baselines than the heightened post-fire requirements in Altadena, and we adapt our assemblies accordingly. If you’re on the border between jurisdictions, we’ll confirm which code applies to your property before we quote. Our full Roof Replacement team handles work across the western San Gabriel foothills.

FAQs About Roof Replacement in Altadena