Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roofing Company Across Temple City
Roofing work in Temple City usually falls into one of two camps: a tear-off on a 1950s ranch that’s finally given out, or a high-spec install on a brand-new custom build going up where an old rancher used to sit. Both demand a roofer who reads plans, understands the city’s heat and wind, and puts the price in writing before ordering a single bundle of shingles. Our crews serve Temple City directly, with dispatch coordinated from our Los Angeles office. Call (743) 200-8347 and a real person answers, day or night.
Why Mercer Roofing Is Temple City’s Preferred Roofing Company
We build trust the way Temple City homeowners actually want it built: with proof. Every technician who shows up at your door is background-checked, identity-verified, and badged under the Threshold Verified standard. Before the visit, you get the technician’s name and photo sent to you. At the door, they present a photo ID. No guessing who’s walking up your driveway.
Mercer Roofing was founded in 2000 and operates as part of the Threshold Group family of home-service companies. Each location is independently owned and operated, held to the same vetting and quality standard. For Temple City customers, that means the same written price before work starts, the same written guarantee on every repair, and the same 365-Day Done Right Promise: if the work isn’t right within a year, we make it right. Grant Whitlock leads our team, and he holds every job to that standard.
Customers across Temple City, from the interior grid streets near Camellia Drive to the newer builds off Las Tunas, tell us the same thing: the badge at the door is what convinced them to call. That’s the point.
Commercial Roofing in Temple City
Commercial Roofing in Temple City means something specific here. The commercial stock along Rosemead Boulevard and Las Tunas Drive includes low-slope storefronts, medical office buildings, and small industrial units, many of them built in the same postwar window as the ranch homes around them. A commercial re-roof in Temple City typically runs $12,000 – $35,000 depending on square footage, membrane choice (TPO vs. modified bitumen), and whether we’re tearing off or recovering. Larger flat-deck projects with tapered insulation and new edge metal push toward the top of that range.
Low-Slope Replacement and Recover
Most Temple City commercial buildings need either a full tear-off to the deck or a code-compliant recover if the existing roof is dry and under the layer limit. We spec membrane based on the building’s use and the San Gabriel Valley’s summer heat. A white TPO membrane reflects far more UV than old black built-up roofing, which matters when surface temps on a Rosemead Boulevard roof hit 140°F in August.
Tenant-Fit and Leak-Repair Work
When a commercial tenant has a leak or a landlord needs a roof cert for a sale, we handle it with the same written pricing rule as residential jobs. No work starts without a written number. In Temple City, that matters for commercial clients carrying liability and making decisions under a closing deadline.
Metal Roof Installation in Temple City
Metal Roof Installation in Temple City is a growing segment, particularly on the larger custom rebuilds replacing original ranchers. A standing-seam metal roof on a 3,500 – 5,000 sq ft new build here typically lands between $45,000 and $90,000, depending on panel profile, gauge, finish (Kynar-coated vs. standard), and roof complexity. Stone-coated steel in a tile profile runs $30,000 – $55,000 on the same footprint. These are honest numbers for this market, and they’re written down before we order anything.
Standing Seam on Custom Rebuilds
Architects in Temple City’s rebuild market often spec metal for its clean lines and fire resistance. We coordinate with the designer and the framing crew on the front end, because the fastening schedule and underlayment spec for standing seam need to be decided before the deck goes on. A late decision means rework and a blown schedule.
Metal Re-Roofs on Older Ranch Homes
On a 1950s ranch where the homeowner wants a sixty-year roof, we can install a lightweight metal system over the existing deck if the structure is sound. The key is verifying deck condition and upgrading the underlayment to handle thermal movement. Temple City’s 100°F summer days expand metal panels in ways a fastened asphalt shingle never experiences.
Trusted Brands We Service in Temple City
We install and repair roofing systems from manufacturer-recognized brands including GAF, CertainTeed, Atlas, and Tamko. For Temple City homeowners, that means we can match your existing shingle color after a repair, and we keep common profiles and accessories stocked locally so a patch job doesn’t wait on a warehouse shipment from Riverside. Whether you’re replacing three cracked shingles on a 1962 ranch or ordering a full system for a new custom build, the manufacturer’s warranty stays intact because we install to the brand’s published spec. No shortcuts, no “we do it our own way.”
Common Roofing Company Problems We See in Temple City Homes
- Age-related shingle failure on 1945 – 1970 ranches. Many Temple City homes are still on a first or second roof, and the original three-tab asphalt shingles are now cracking, curling, or shedding granules at an accelerated rate. The UV load inland shortens shingle life compared to coastal Los Angeles.
- Moss and algae on north-facing slopes under camellia trees. The city’s decades-old camellias drop organic debris that sits on low-airflow roof sections and feeds moss. This is a pre-1975 Temple City signature problem, and it doesn’t cure itself.
- Santa Ana wind damage on aging roofs. Sustained gusts funneled through the mountain passes hit Temple City each fall and winter, ripping loose any shingle that’s lost its seal. We see a recurring repair cycle right after the first big wind event.
- Wrong-spec decisions on custom rebuilds. When a 4,000 sq ft custom build gets standard asphalt shingles spec’d where the architect planned clay or concrete tile, the dead load and fastening schedule are wrong from the start. That mistake is expensive to unwind after framing.
Pricing for Roofing Company in Temple City, CA
A full tear-off and re-roof with architectural shingles on a typical 1,200 – 1,800 sq ft Temple City ranch runs $14,000 – $24,000. A repair call, whether it’s a loose flashing, a torn shingle, or a chimney leak, typically lands between $450 and $1,800 depending on scope. Tile roof work on larger custom homes starts around $35,000 and goes up from there, driven by material lead times more than labor. Metal roofs run $45,000 – $90,000 on 3,500 – 5,000 sq ft builds. Every quote is written, line-itemed, and fixed before we order materials or put a boot on the roof. Call (743) 200-8347 to schedule your free estimate.
We Also Serve Cities Near Temple City
Our crews cover Temple City and the surrounding San Gabriel Valley communities, including El Monte, San Gabriel, Arcadia, and Rosemead. If you’re just outside the Temple City line and checking whether your neighborhood is covered, ask when you call. As a Roofing Company with deep local roots, we treat this whole valley as home. For a closer look at our Temple City coverage and neighborhood list, give us a ring.
Serving Temple City, CA - Our Local Coverage Area
We’re based in the Temple City 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 Roofing Company in Temple City
Compare bids by material line items, not just the bottom number. Ask each roofer to break out the underlayment spec, the fastening schedule, the flashings, the ridge and valley treatment, and the haul-away. On a custom build in Temple City, the tile or metal order needs to be placed early; a bid that doesn’t account for that lead time will change once the schedule slips. Call (743) 200-8347 and ask for a written line-item quote, which is standard on every Mercer job.
Because the original decking has often softened under years of trapped moisture, especially on north-facing slopes under heavy camellia canopy. A re-roof over a soft deck locks the rot in. On a street off Camellia Drive, we tore off two layers of failing original asphalt shingles from a 1958 ranch and found dried-out flashing at the chimney and undersized drip edge typical of that era. We replaced the decking where it had softened, installed ice and water shield in the valleys and penetrations, set a ridge vent to improve attic airflow, and finished with CertainTeed architectural shingles. The homeowner commented the north-facing moss zone hasn’t returned through two rainy seasons. That’s the difference a full tear-off makes.
Yes. Temple City sits on the inland San Gabriel Valley floor where summer temps routinely hit 100 – 105°F, and that constant thermal cycling plus UV load degrades shingle binders faster than a beach city’s marine layer ever would. Santa Ana events then exploit every weakened seal. A roof that might last thirty years in Venice can fail at twenty or less here if it wasn’t installed with ventilation and fastening upgrades. Call (743) 200-8347 for an exact assessment of your roof’s remaining life.
It’s the camellia trees. Temple City’s identity as the “City of Camellias” means mature, decades-old ornamentals line the interior grid streets and frequently overhang rooflines. The debris they deposit, combined with reduced airflow on north-facing slopes, creates concentrated zones of moss, algae staining, and accelerated granule loss. This pattern shows up almost exclusively on pre-1975 ranch homes here, at a rate roofers in neighboring Rosemead or El Monte don’t diagnose the same way. The fix is not just cleaning the roof, it’s upgrading underlayment and ventilation on the next tear-off so the zone doesn’t come back.
Order specialty materials the day the roof design is finalized, not the day demo starts. Custom ridge caps, architectural glass-integrated skylights, designer flashing profiles, and tile or stone-coated metal systems all carry long lead times. In Temple City’s split market, lead times, not labor, set the calendar. A late tile order on a 4,000 sq ft rebuild stalls the whole job and forces rushed decisions on trim details. We lock the material schedule into the written quote before any work begins, so the calendar is real from day one. Call (743) 200-8347 to schedule a free estimate and get your material timeline in writing.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Temple City since 2000.






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