Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across San Gabriel
Roof replacement in San Gabriel usually costs between $9,800 and $18,500 for a full tear-off on a typical 1,400 – 2,200 sq ft home, and most jobs take 2 – 4 days once permits clear. We work throughout San Gabriel, from the older bungalows south of Las Tunas Drive to the newer infill off San Gabriel Boulevard, and we know which sections of town hide skip-sheathing under aged shingles and which newer builds need valley reinforcement before winter rains. If you’re weighing repair against replacement, call (855) 382-1073 and we’ll give you a straight answer, not a sales push.
Why Barnwood Roofing Is San Gabriel’s Preferred Roof Replacement Company
San Gabriel homeowners keep calling us back because we do something most roofing companies won’t: we’ll tell you when a repair is enough. Our full-service model covers inspection, repair, and replacement under one roof, so there’s no built-in financial incentive to oversell you a new roof. Ruben Calloway leads every project with that same bias toward honesty – a reputation built across 91775, 91776, and 91778 by giving homeowners real options at real price points.
We source from seven major manufacturers – GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral – which means we recommend a roof based on your home’s orientation, slope, and budget, not based on what’s sitting in our warehouse. For San Gabriel’s newer infill homes, that often means a full tear-off with valley ice and water shield. For the 1940s ranch off Valley Boulevard, it might mean replacing the original composition shingles with a reinforced underlayment. Two different roofs, two different answers, one honest recommendation.
Styles & brands we work with
New Roof Installation in San Gabriel
New Roof Installation in San Gabriel typically involves either a full tear-off on an existing home or a fresh install on a new addition or ADU, and prices here run from $12,000 to $24,000 depending on square count, pitch, and access. San Gabriel’s mix of 1920s – 1950s bungalows and newer two-story infill means we see both ends of the spectrum: original skip-sheathing that needs full redecking on the old stock, and builder-grade architectural shingles on newer homes that have already started curling after 15 – 18 years.
Full Tear-Off and Redecking
When the old roof comes off, so does any hidden rot. In San Gabriel, older homes frequently have dry-rotted sheathing around valleys and eaves that only becomes visible after tear-off. We replace the decking, install new underlayment, and lay the new system clean – no shortcuts, no layovers that hide problems.
New Construction and Additions
For new additions, ADUs, or full new builds in San Gabriel, we coordinate with your contractor or architect to meet city permit requirements from the start. We install the right underlayment, flashing, and shingles so the roof is done once and done right, matching the existing home’s material where needed.
Reroofing in San Gabriel
Reroofing in San Gabriel means replacing the existing roof system rather than adding a second layer, and that’s the only approach we recommend for most homes here – especially the post-war tract houses with original skip-sheathing and the newer infill where valleys were underprotected. Reroofing costs in San Gabriel typically run $9,800 to $18,500 for asphalt shingle systems, with standing seam or flat-roof sections higher. A full tear-off adds 1 – 2 days but gives us eyes on every sheet of decking, which is where hidden problems live.
Aging Bungalow and Ranch Roofs
San Gabriel’s 1920s – 1950s homes often sit under original wood-shingle or early composition roofs. By the time the homeowner notices granules in the gutters, the underlayment is usually shot and the decking needs work. We tear it all off, replace what’s rotten, and put down a modern system with proper ventilation.
Newer In-Fill and Two-Story Homes
The newer two-story homes off San Gabriel Boulevard and near the 10 freeway have a different problem: builder-grade shingles that fail early at valleys and pipe penetrations. Original installers often skipped ice and water shield under the starter strip, so leaks appear within a decade. Our reroofs on these homes always include valley membrane and drip-edge correction.
Trusted Brands We Service in San Gabriel
We work with seven manufacturers, but for San Gabriel’s climate and housing mix, we most often specify GAF, CertainTeed, and Owens Corning systems. GAF Timberline HDZ is a common choice for newer infill homes that need long-term performance without a premium price. CertainTeed Landmark often fits the older bungalows where a classic look and reliable underlayment matter. Owens Corning Duration works well on the low-slope sections we see on many San Gabriel additions. We stock local parts for these systems, so when a San Gabriel homeowner books a replacement, we’re not waiting on out-of-area deliveries.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in San Gabriel Homes
- Premature valley failure on newer builds. Homes built in the 2000s around San Gabriel’s infill developments often show curled shingles and granule loss at valleys by year 10 – 12. The root cause is usually missing ice and water shield under the starter strip, which lets winter rain wick into the decking.
- Dry rot hidden under original skip-sheathing. The 1940s and 1950s ranch homes across 91776 still have original skip-sheathing under aged composition shingles. Water intrusion at flashing points goes unnoticed for years, and by the time we tear off, whole sheets of decking need replacement.
- Flashing failures on low-slope additions. San Gabriel’s many multi-generational properties have additions with low-slope or rolled-roof sections. Wind-driven Santa Ana rain pushes water under poorly flashed pipe penetrations and drip edges, causing leaks inside walls rather than visible ceiling stains.
- Tree-litter clogged valleys and gutters. The mature street trees in San Gabriel’s older neighborhoods – especially around the Mission District – drop leaves and debris that pile into valleys and block drainage. Combined with summer-baked shingles, this trapped moisture accelerates shingle degradation on the most vulnerable slopes.
Pricing for Roof Replacement in San Gabriel, CA
You should know what you’re getting into before you sign anything, so here are honest numbers for San Gabriel’s market. A full tear-off and asphalt shingle reroof on a 1,400 – 1,800 sq ft ranch runs $9,800 to $14,500. A two-story infill home with valleys, steep pitch, and decking work lands between $13,000 and $18,500. Architectural shingle upgrades add $1,200 – $2,800 over three-tab. New construction or full additions start around $15,000 and climb with complexity. The variables here are square count, access, permit fees, and whether we find rot under the old roof. We give you a written, line-item quote before work starts – no change orders unless you approve them first. Call (855) 382-1073 for a free estimate with real numbers, not a vague ballpark.
We Also Serve Cities Near San Gabriel
Barnwood Roofing covers San Gabriel and the surrounding communities, including East San Gabriel, San Marino, Alhambra, and Rosemead. For details on our full service area and what we offer as our Roof Replacement team, visit the service hub. For more about how we work in San Gabriel specifically, see Roof Replacement in San Gabriel.
Serving San Gabriel, CA — Our Local Coverage Area
We’re based in the San Gabriel 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 San Gabriel
Roof replacement does not generally void a builder’s structural warranty, provided the work is performed by a licensed contractor and documented properly. In San Gabriel’s newer developments, some builders require certified installers for specific manufacturer warranties – for example, using a GAF-certified contractor keeps the GAF system warranty intact. We provide full documentation of materials, installation methods, and permit sign-offs so your builder warranty and the new manufacturer warranty both stay valid. Call (855) 382-1073 and we’ll walk you through your specific situation.
For newer San Gabriel homes with builder-grade shingles, the upgrades that matter most are ice and water shield in valleys, a proper ridge vent, and architectural-grade shingles rather than three-tab. These three changes address the exact failure modes we see in San Gabriel’s infill developments – valley leaks, poor attic ventilation, and premature shingle curl on south-facing slopes. Cosmetic upgrades like designer colors are a personal choice, but the structural upgrades pay for themselves the first winter. Exact costs depend on your roof’s square count; call (855) 382-1073 for a line-item estimate.
In San Gabriel’s master-planned communities, most HOAs require prior written approval for roof replacement if you’re changing material type or color from the original spec. If you’re replacing like-for-like, approval is often simpler but still requires documentation. We help San Gabriel homeowners prepare the submittal package – including manufacturer color charts, material samples, and installation specs – so the HOA review doesn’t delay your project. Start early; some HOAs take 2 – 4 weeks to approve. Call (855) 382-1073 and we’ll help you get ahead of the process.
Newer roofs in San Gabriel need ice and water shield in valleys because the original builder-grade installs often skipped it, and valleys are where most winter-rain leaks start. The membrane creates a waterproof barrier under the shingles where two roof planes meet, which is essential during the heavy, wind-driven rains that hit San Gabriel in January and February. This is the single highest-return upgrade we recommend for 2000s-era homes in 91775 and 91776. We install it on every reroof, standard. Call (855) 382-1073 for an inspection if you suspect your valleys were missed.
A square is 100 square feet of roof area, and most San Gabriel homes fall between 14 and 24 squares depending on footprint, pitch, and overhangs. The number matters because every material and labor line item scales by squares – asphalt shingles, underlayment, nails, decking, tear-off disposal. A 1,500 sq ft ranch might have 18 squares, while a two-story infill home could have 26. We measure precisely during the free estimate, and the quote breaks down cost per square so you can see exactly what you’re paying for. Call (855) 382-1073 to schedule yours.
Written by Ruben Calloway, Owner at Barnwood Roofing, serving San Gabriel and the San Gabriel Valley.