Architectural shingles
Metal roofing
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 typically runs $9,500 to $18,500 for a standard single-story bungalow with asphalt shingles, and $18,000 to $35,000 when you’re dealing with clay barrel tile on a Spanish-revival home. Most jobs take two to five days once materials arrive. If you’re noticing granule loss on a south-facing slope, water stains on the ceiling after winter storms, or lifted ridge caps from Santa Ana winds, call (877) 755-4274 and we’ll start with an inspection, not a sales pitch.
We work throughout San Gabriel weekly, from the Mission District to the Alhambra Wash tract near Garvey Park. Our crews know the difference between a 1928 Spanish Colonial on skip-sheathing and a 2005 tract home with builder-grade shingles, because both show up constantly here. That matters when you’re deciding between a repair and a full replacement. We handle everything from full reroofs and flat roof work on detached garages to architectural shingle upgrades, and we’ll tell you straight if your existing roof has years left in it.
Why Weathervane Roof Repair Is San Gabriel’s Preferred Roof Replacement Company
We’re a roofing-only company. That’s not a tagline, it’s how we’re built. Inspection, repair, and replacement are the only three services we offer, which means the crew that shows up at your San Gabriel home isn’t a general contractor squeezing roofing between a bathroom remodel and a siding job. We spend every working day on roofs across the San Gabriel Valley, and that focus shows up in how we diagnose problems and how we quote work.
Gil Tanner leads our team, and he’s built Weathervane around a repair-first philosophy that San Gabriel homeowners tend to appreciate. We’ll open up the conversation with a roof inspection, which we sell as its own standalone service. That’s deliberate. If your clay tile roof near the Mission District just needs underlayment replacement and tile re-lay, we’ll tell you that before we ever mention tearing the whole roof off. When a replacement is genuinely warranted, which happens often enough on 70-year-old bungalows in 91775 and 91776, we’ll show you exactly why with photos and a written breakdown.
We work with materials from seven major manufacturers including GAF, CertainTeed in San Gabriel, Owens Corning, IKO, Atlas, Tamko, and Boral. That means the shingle or tile recommendation you get is matched to your roof’s existing system, your HOA’s requirements, and your budget, not to whichever vendor gives us the best margin. Seven leading brands, one honest recommendation.
Styles & brands we work with






Reroofing in San Gabriel
Reroofing in San Gabriel means removing the existing shingle or tile layer and replacing it with a new roofing system. It’s the most common full roof replacement we do in this city, because so much of the housing stock sits on original or near-original roofs. For a typical 1,200 to 1,600 square foot bungalow in the 91775 or 91776 ZIP codes, a complete asphalt shingle reroof runs $9,500 to $14,000. If your home has clay barrel tile and the underlayment has failed, expect $18,000 to $28,000 depending on how much tile can be salvaged and re-laid.
Here’s what a reroof in San Gabriel usually includes: tear-off of the existing layer, inspection of the decking and skip-sheathing underneath, replacement of rotted boards, new underlayment, new flashing at penetrations and valleys, and installation of the new shingle or tile system. On pre-1960 homes, we regularly find skip-sheathing with gaps between boards. That’s fine when it’s intact, but if it’s rotted or sagging, it has to be addressed before anything new goes on.
Matching Original Tile On Older Homes
San Gabriel has a lot of Spanish Colonial and Mediterranean revival homes with original clay barrel tile that’s approaching a century old. When that tile is still sound, we remove it carefully, replace the failed underlayment beneath, and re-lay the original tile. That’s often half the cost of a full tile replacement and it preserves the look your home was built with.
If some tiles have cracked or blown off during Santa Ana wind events, we source matching barrel tile from salvage yards and manufacturers in Southern California. Boral remains one of the closest matches for many Mission-era profiles, and we keep samples in the truck for comparison.
Architectural Shingle Upgrades
For post-war stucco tract homes and 1990s-2000s builds in San Gabriel, a reroof is often an upgrade opportunity. Builder-grade 3-tab shingles fail early on south- and west-facing slopes here, often within 12 to 15 years. When we reroof those homes, we typically move to architectural shingles like GAF Timberline HDZ or Owens Corning Duration, which carry higher wind ratings and last meaningfully longer in Southern California sun. Expect $11,000 to $16,000 for a standard single-story tract home upgrade.
Flat Roof Replacement in San Gabriel
Flat Roof Replacement in San Gabriel is a specialized job that shows up most often on additions, detached garages, and enclosed patios. Many of the pre-1960 bungalows in this city have flat-roof additions tacked onto the back of an otherwise pitched home, and those low-slope sections fail faster than the pitched roof does. A flat roof replacement on a typical 400 to 600 square foot addition or garage in San Gabriel runs $6,500 to $11,000 depending on the system and substrate condition.
The job involves stripping the old membrane, inspecting the wood decking for dry rot, and installing a new low-slope system. We use modified bitumen and TPO depending on the slope, the deck condition, and whether the surface gets foot traffic. On older garages in the 91778 ZIP, we frequently find that the original built-up roof was never properly sloped, which means water ponds and soaks through. In those cases, we’ll build a slight taper into the new system so water actually drains.
Detached Garage Roofs
Detached garages are common throughout San Gabriel, and their flat roofs get ignored until a leak ruins whatever’s stored inside. We replace garage roofs as their own job, not as an afterthought bolted onto a house reroof. A standard two-car garage flat roof here runs $3,800 to $6,500.
Because most San Gabriel garages were built with minimal insulation and no ventilation, we check for moisture trapped in the decking before we lay anything new. If the deck is sound, the replacement goes fast. If it’s spongy, we replace the affected sheathing and tell you before we add a penny to the estimate.
Trusted Brands We Service in San Gabriel
We install and repair roofing systems from seven major manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. In San Gabriel specifically, GAF Timberline shingles come up constantly because they’re a strong match for HOA architectural reviews on newer tract homes, and Boral is the first choice when we’re matching barrel tile on older Mission-district properties. Atlas and Tamko give us solid budget options that still carry meaningful wind ratings. Because we stock common profiles and colors locally, we can often start a San Gabriel replacement within a week of approval. You’ll never get a one-brand pitch from us. We match the product to your roof, your budget, and your HOA’s rules.
Roof Replacement is a major decision, and we treat it that way on every job in the San Gabriel Valley. Whether you’re in a 1920s bungalow near the Mission or a 2015 build in a master-planned community, the process starts with someone actually looking at your roof.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in San Gabriel Homes
- Premature granule loss on south- and west-facing slopes. San Gabriel’s afternoon sun is relentless, and builder-grade 3-tab shingles on exposed slopes routinely show bare mat and heavy granule shedding by year twelve or fifteen. By the time homeowners notice it in the gutters, the shingles are usually beyond repair.
- Failed original underlayment on 1990s-2000s tract homes. The shingles look fine, but the felt underneath has dried out and torn at valleys and pipe penetrations. Water gets in, the ceiling stains show up, and the homeowner blames the shingles when the real problem is a layer they can’t see.
- HOA architectural review rejections. Newer San Gabriel developments, including several tracts in the eastern part of the city, require material and color submittals before any reroof starts. If the contractor didn’t bring samples to the HOA first, the job stalls and the homeowner eats re-order costs. We handle that submission process as part of the job.
- Rotted skip-sheathing under old clay tile. On pre-1960 homes in 91775 and 91776, we routinely open up a tile roof and find skip-sheathing that’s soft, split, or sagging. You can’t lay new underlayment over rotted boards. The decking has to come up and get replaced, which adds cost but prevents a re-roof that fails in five years.
Pricing for Roof Replacement in San Gabriel, CA
Here’s what you can expect to pay for roof replacement work in San Gabriel. A standard asphalt shingle reroof on a 1,200-1,600 square foot single-story bungalow runs $9,500 to $14,000. An architectural shingle upgrade on the same footprint runs $11,000 to $16,000. Clay barrel tile replacement on a Spanish-revival or Mediterranean home runs $18,000 to $35,000, depending on how much tile is salvageable and whether the skip-sheathing must be replaced. Flat roof replacement on an addition or detached garage runs $3,800 to $11,000. Factors that move the number: roof pitch, decking condition, HOA requirements, and whether we’re doing a simple tear-off or a full system rebuild. Call (877) 755-4274 for a free, written estimate. No quotes without a diagnosis.
The team at Roof Replacement in San Gabriel knows these neighborhoods well, and we price every job with a line-item breakdown so you see exactly where the money goes.
We Also Serve Cities Near San Gabriel
Weathervane Roof Repair serves San Gabriel and the surrounding communities including East San Gabriel, San Marino, Alhambra, and Rosemead. If you’re in one of those areas and dealing with a failing roof, the same inspection-first process applies. Call (877) 755-4274 and we’ll schedule a time to come out.
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
You’ll need the manufacturer’s product data sheet, a physical sample or color swatch of the proposed shingle or tile, and in many cases a wind rating letter from the manufacturer. We handle this for you. Because we keep sample boards of Boral barrel tile and GAF Timberline shingles, we can present the HOA with exactly what’s going on your roof before you spend a dollar on materials. Call (877) 755-4274 and we’ll walk you through your specific HOA’s checklist.
Yes. Builder warranties on newer San Gabriel homes typically cover the structure and major systems, not the roof covering itself, and a reroof won’t void your structural warranty as long as the work is done properly. We pull permits when required, follow manufacturer installation specs, and keep documentation that your builder’s warranty department would accept. Before we start, we’ll review your warranty documents with you so there are no surprises.
If your clay tile roof is leaking in isolated spots and the tiles themselves are intact, you may only need a repair. On the other hand, if the underlayment has failed across large sections, or if your skip-sheathing is rotted, a full reroof is the more honest answer. We’ll inspect the roof, show you photos, and give you a recommendation that favors repair when repair will actually hold. Call (877) 755-4274 to book an inspection.
We tell homeowners to replace builder-grade 3-tab shingles with architectural shingles before the old ones fail completely. You’ll get better wind performance during Santa Ana events, longer lifespan under the San Gabriel sun, and a thicker shingle that actually looks like an upgrade. If your home still has the original roofing, start there. It’s the system that protects everything else you might upgrade.
Yes, and we treat them as their own job, not a side note. Flat roof replacement on San Gabriel additions and detached garages typically runs $3,800 to $11,000 depending on size, system type, and whether the decking needs replacement. We’ll inspect the low-slope section, check for ponding water, and quote you a flat roof that actually drains. Call (877) 755-4274 for a free estimate.
Written by Gil Tanner, Owner at Weathervane Roof Repair, serving San Gabriel and the San Gabriel Valley.