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 runs $11,000 – $28,000 for a typical single-family home, with asphalt shingle tear-offs on the lower end and clay tile or full decking replacement pushing higher. Most jobs take 1 – 3 days once materials land, and our crews are in San Gabriel weekly. If you’re in 91775, 91776, or 91778 and your roof is 30+ years old, you’re not looking at repair anymore. You’re looking at replacement. Call (866) 974-2271 and we’ll tell you straight: what’s salvageable, what’s not, and what it costs.
We know which San Gabriel streets still carry original 1920s shake, which postwar tracts are hitting their second roof cycle, and how inland valley heat chews through cheap asphalt faster here than four miles west in Alhambra. That’s the difference between a roofer who works in San Gabriel and one who just names it on a website.
Why Koreatown Roofing Is San Gabriel’s Preferred Roof Replacement Company
We do one thing: roofing. Inspection, repair, replacement. Every job, every day. That focus is why San Gabriel homeowners call us when they want a straight answer, not a general contractor who subs the roof out to whoever answers the phone. Manny Cordero leads our field work, and he’s on roofs in San Gabriel checking nailing patterns and decking conditions before any quote goes out.
We work with seven manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means when we recommend a shingle for a San Gabriel bungalow, it’s because the material fits the house and the budget, not because we have a supplier obligation. Homeowners in the Mission District pick different materials than homeowners east of San Gabriel Blvd, and we spec accordingly.
Our reputation in San Gabriel comes from jobs where we found problems other roofers missed: rotted skip sheathing under shake, missing ice and water shield at valleys, nailing patterns that wouldn’t hold a Santa Ana wind rating. Homeowners see the difference on paper, in the photos we take, and in a roof that doesn’t leak in year three.
Styles & brands we work with
Roof Replacement Contractor in San Gabriel
Roof Replacement Contractor work in San Gabriel starts with a real inspection, not a driveway estimate. We get on the roof, lift the old shingles, check the decking, and document what’s underneath. On older San Gabriel homes, the framing is usually fine, but decking and underlayment are almost always toast. We quote replacement with full tear-off, new underlayment, code-compliant decking, and the shingle or tile system that fits the architecture. A standard tear-off and replacement on a 1,200-square-foot San Gabriel ranch runs $11,000 – $16,000 with architectural asphalt.
Tear-Off and Decking Replacement
Most San Gabriel roofs from the 1950s and earlier have decking that fails inspection once we pull the old material. We don’t nail new shingles onto weathered boards. We replace the decking, re-nail everything to current code, and only then lay the roof. On Mission District homes, that often means overlaying original skip sheathing with solid plywood.
Full Roof Replacement
This is a complete tear-off, decking repair or replacement, underlayment, flashing, and the roofing system itself. We spec Class A fire-rated assemblies on every San Gabriel replacement because of the dry Santa Ana season. You get a written line-item quote before work starts. The price doesn’t change once we’re on the roof unless you change the scope.
Asphalt Shingle Roof Replacement in San Gabriel
Asphalt Shingle Roof Replacement in San Gabriel costs $9,500 – $18,000 depending on roof size, pitch, and how much decking needs replacing. We install Owens Corning, GAF, CertainTeed, and IKO architectural shingles, and we don’t push the cheapest option. Inland heat in the 90s and 100s brittles low-grade asphalt years earlier than coastal LA, so we spec shingles rated for sustained heat and UV, not whatever’s on sale at the supply house. A 30-year architectural shingle might run 22 – 25 effective years here. A cheap 3-tab might look cracked and thin at 12.
Architectural vs. 3-Tab
Architectural shingles are heavier, lay flatter, hold better in wind, and look better on both craftsman bungalows and mid-century San Gabriel ranch homes. They cost more up front but make sense here. 3-tab shingles are lighter and cheaper, but we rarely recommend them for full replacements in the valley heat.
Roof Decking Replacement
If you have an older San Gabriel home with skip sheathing, expect decking replacement as part of the job. We quote it as a line item, not a surprise. The new plywood layer stiffens the roof system, gives us solid nailing, and brings the assembly up to code.
Trusted Brands We Service in San Gabriel
We install and service roofing systems from GAF, CertainTeed, Owens Corning, and IKO, alongside options from Atlas, Tamko, and Boral. Your roof, your material choice. For San Gabriel customers, that means we quote the shingle or tile that fits the house’s architecture and your budget, not whatever single brand we happen to have a contract with. Multi-brand relationships let us compare cost and performance honestly. We’re roofing specialists, not generalists: every estimate reflects the brand you choose and the local conditions your roof will actually face here in San Gabriel.
Common Roof Replacement Problems We See in San Gabriel Homes
- Skip sheathing under original shake. Older Mission District homes often have spaced 1×4 boards instead of solid decking, and those boards are frequently too weathered to nail into. We inspect before quoting, and we overlay solid plywood when needed.
- Cedar fragments in gutters every late summer. Brittle shake sheds into gutters during heat waves, which clogs drains and traps moisture against fascia. Replacement ends that cycle.
- Missing ice and water shield at valleys. On low-slope built-up roofs from the postwar era, valleys and penetrations without proper membrane leak during winter rains. We always re-membrane valleys on replacement.
- Under-spec’d nailing patterns. Santa Ana winds expose shortcuts. Shingles nailed too high or too shallow lift off. We check nailing patterns on every quote and nail to current code on every replacement.
See the difference
Before
After
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AfterPricing for Roof Replacement in San Gabriel, CA
Here’s what San Gabriel homeowners actually pay. A standard tear-off and architectural asphalt shingle replacement on a 1,200 – 1,800 square-foot single-story home runs $11,000 – $18,000. Homes in the Mission District with clay tile or original shake that need full decking replacement run $18,000 – $28,000. Low-slope built-up or modified bitumen roofs on mid-century homes run $13,000 – $20,000. The gap between a coastal-spec and an inland-spec job matters less in San Gabriel than in beach cities, but the heat load here means the cheap spec costs more within a decade. We write line-item quotes and fixed pricing. No change orders unless you change the scope. Call (866) 974-2271 for a free estimate.
We Also Serve Cities Near San Gabriel
Our crews work across the San Gabriel Valley. Beyond San Gabriel proper, we regularly handle full Roof Replacement jobs in East San Gabriel, San Marino, Alhambra, and Rosemead. If you’re a few miles out and need someone who knows the same housing stock and same heat load, call us. We serve Roof Replacement in San Gabriel and the surrounding neighborhoods six days a week.
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
Because inland valley heat in the 90s and 100s bakes the cedar until it brittles and flakes, and your gutter becomes the collection point. The original shake is decades past its service life. The fix is a full replacement, not more gutter cleaning. Call (866) 974-2271 and we’ll inspect it for free.
Skip sheathing is spaced 1×4 boards laid across rafters instead of solid decking, common under original shake roofs in the Mission District and pre-war neighborhoods. New shingles can’t be nailed to spaced boards safely, so we overlay solid plywood before installing the new roof. If we skip that step, the new roof fails early and won’t hold a wind rating.
Yes, and we spec Class A fire-rated assemblies on every San Gabriel replacement. The Santa Ana wind season makes fire-rated roofing a practical concern, not a formality. Class A materials cost a little more, but they’re the right call for this climate.
Inland heat in the 90s and 100s brittles standard asphalt faster than coastal LA, so cheap shingles crack and thin years early. We recommend architectural shingles rated for sustained heat and UV, which typically hold up better and last longer here. A 30-year shingle might run 22 – 25 effective years in San Gabriel.
Look at the line items: decking replacement, underlayment type, ice and water shield at valleys, nailing pattern, and shingle brand. A bid that omits decking work on an older San Gabriel home is under-quoting, not cheaper. We give written, line-item quotes so you can compare honestly. Call (866) 974-2271 for your free estimate.
Contact Koreatown Roofing in San Gabriel
If your San Gabriel roof is near the end of its life, get a straight answer first. Manny Cordero and our roofing-only crew will inspect it, show you photos, and quote a replacement that fits your house and your budget. We work with seven brands because your roof deserves a real choice, not whatever we happen to stock. Call (866) 974-2271 to schedule your free estimate.
Written by Manny Cordero, Owner at Koreatown Roofing, serving San Gabriel and the San Gabriel Valley.