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 Roofing Company Across Commerce
Finding a roofing company in Commerce, CA you can actually trust means knowing who shows up at your door before they ring the bell. Mercer Roofing Co Los Angeles serves Commerce with written pricing, photo-badged crews, and a 365-Day Done Right Promise on every repair. We’re minutes from the Commerce industrial districts and residential pockets near Bandini Boulevard, and we answer the phone live, 24/7. For a free estimate, call (213) 521-8272.
Why Mercer Roofing Co Los Angeles Is Commerce’s Preferred Roofing Company Company
Commerce homeowners and building managers keep our number because we solve the problem most roofers ignore: uncertainty about who’s actually at the door. Every Mercer Roofing technician is background-checked, identity-verified, and dispatched under the Threshold Verified standard. You’ll get the technician’s name and photo before the visit. When they arrive, they’ll present a photo ID badge. No guessing, no unmarked vans.
Led by Grant Whitlock, our team has been serving Commerce’s flat-roof-heavy roofscape for years. The city’s mid-century industrial buildings and scattered residential properties demand something residential-only roofers don’t understand: how UV, ponding water, and forklift vibration interact on low-slope membranes. We inspect before we quote, and our written price is final before any work starts. If a repair fails within 365 days, we return and make it right at no charge. That’s the Done Right Promise, and it’s included with every job.
Dispatch is coordinated from our Los Angeles office, but the crews working on Commerce roofs live and breathe this market. They know the warehouse clusters off Eastern Avenue, the older commercial strips near Slauson, and the residential blocks tucked between industrial parcels. That local familiarity means faster response and better diagnosis.
Styles & brands we work with
Residential Roofing in Commerce
Residential roofing in Commerce covers the city’s small stock of single-family homes, duplexes, and the residential units attached to commercial buildings. While most of Commerce is industrial, the homes that do exist are often mid-century, with composition shingle roofs that have seen decades of inland sun. A typical residential roof repair in Commerce runs $450 – $1,200. A full shingle replacement on a standard Commerce home usually falls between $9,000 and $16,000, depending on roof size and decking condition.
Shingle Roof Repair and Replacement
We work with manufacturer-recognized brands including GAF, CertainTeed, and Owens Corning. When we replace a shingle roof in Commerce, we inspect the decking beneath before writing the final price. If the decking is sound, the written quote stands. If it’s soft or rotted, we write a separate change order and get your signed approval before touching it.
Tile Roofing Options
Some older Commerce homes have original clay or concrete tile. Tile can last decades longer than shingle, but the underlayment beneath it fails first. We replace worn underlayment, reset loose tile, and match your existing profile where possible. Tile repairs in Commerce typically run $600 – $1,800 depending on how much underlayment needs replacing.
Roof Maintenance in Commerce
Roof maintenance in Commerce matters more than in neighboring cities because the inland heat cycles are brutal on flat and low-slope roofs. A planned maintenance visit catches small failures before they become interior leaks. Most Commerce building owners schedule maintenance once or twice a year. A single roof maintenance visit typically runs $350 – $700, depending on roof size and access.
Flat Roof Inspection and Seam Repair
We walk the roof, clear drains and scuppers, check seams and flashing, and document what we find. If we spot failing seams, we cold-apply a repair patch and photograph the work. The goal is simple: keep water moving and keep the membrane intact through the next rain event.
Gravel Restoration for Built-Up Roofs
Many Commerce warehouses still have original gravel-surfaced built-up roofs from the 1960s through 1980s. When gravel washes away, the exposed asphalt alligators within a single summer. We restore the gravel ballast after patching, which protects the membrane and extends the roof’s life by years. This is maintenance work most roofers skip entirely.
Trusted Brands We Service in Commerce
We install and repair GAF, Atlas, and Tamko roofing systems, among others. For Commerce customers, we keep common sealants, flashing materials, and single-ply accessories stocked locally, which means quicker repairs on flat commercial roofs. Whether your building wears modified bitumen, EPDM, TPO, or a gravel-surfaced built-up roof, we service it with the same written-price promise and 365-day guarantee on repairs.
Common Roofing Company Problems We See in Commerce Homes
- Alligatoring on gravel-surfaced built-up roofs. After heavy rain strips the gravel ballast, exposed asphalt cracks in the next heat wave. We see this constantly on Commerce warehouses built between the 1960s and 1980s. The fix is a modified bitumen patch plus fresh gravel, not a tear-off.
- Ponding water from poor drainage. Flat roofs with clogged drains or sagging decking hold water after rain. That water reopens old seams and accelerates membrane failure. We address drainage first because patching without drainage means the same leak returns next season.
- Forklift vibration loosening fasteners. Inside Commerce warehouses, constant forklift traffic sends vibration through the structure. Over time, single-ply membranes pull at their fasteners and seams open. We reinforce fastening patterns when we repair these roofs.
- Hidden wet insulation under an intact membrane. An aging low-slope roof can look fine on top while the insulation beneath is soaked. A core sample tells us what’s really going on before we write a repair or replacement quote. Skipping it means blisters and failure within the first summer.
See the difference
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AfterPricing for Roofing Company in Commerce, CA
A typical roof repair in Commerce runs $450 – $1,200 for residential shingle work, $600 – $1,800 for tile or flat-roof repairs, and $2,500 – $7,000 for a substantial commercial flat-roof patch with gravel restoration. Full residential shingle replacement on a Commerce home generally falls between $9,000 and $16,000. Commercial low-slope replacement ranges widely: $8 – $14 per square foot depending on the system. Every quote is written, itemized, and approved by you before work begins. Call (213) 521-8272 for a free estimate.
We Also Serve Cities Near Commerce
Mercer Roofing Co Los Angeles serves Commerce plus nearby Los Angeles, Burbank, South Gate, and Lynwood. If you manage a warehouse on Bandini Boulevard or a home near the Commerce Civic Center, our Roofing Company team is already familiar with your roof type and the failure modes it faces in this climate.
Serving Commerce, CA - Our Local Coverage Area
We’re based in the Commerce 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 Commerce
Expect an inspection first, before any cutting or patching. We’ll take a core sample if the roof is aging, check drainage, and photograph everything. You’ll get a written quote before work starts, and if we find something unexpected once we open the roof, you’ll approve a written change order before we proceed. No surprises on the invoice. Call (213) 521-8272 to schedule an inspection.
Commerce sits inland, away from the coast’s cooling marine layer. Roofs here absorb intense summer sun, and prolonged UV exposure degrades asphalt and single-ply seams faster. When heavy rain hits, gravel washes off built-up roofs, and the next heat wave alligators the exposed asphalt. That cycle repeats year after year, whereas coastal roofs get a break from the temperature swings.
Yes, commercial roof replacements in Commerce require a permit through the city, and the work must pass inspection. We handle the permit paperwork and coordinate inspections as part of the written quote. You’ll know the permit cost before work begins because it’s in the line item breakdown. Call (213) 521-8272 for exact permit and replacement pricing.
Vibration from forklifts and truck traffic transfers through the building frame to the roof. Over time, that movement loosens fasteners on single-ply membranes and opens seams on built-up roofs. Many Commerce warehouses need fastener reinforcement during repairs, not just a patch. We check for vibration-related failure patterns on every low-slope inspection.
Yes. We’ll provide a written, itemized quote in squares or square footage, whichever your building warrants, and walk you through what other roofers’ measurements actually mean. If a competing quote seems cheaper, check whether it includes decking repair, drainage work, and permit costs. We’ll help you read the fine print before you sign anything. Call (213) 521-8272 for a free, line-by-line estimate.
How Commerce’s Roofscape Changes the Work
Commerce’s roofscape is dominated by flat and low-slope commercial roofing across its massive industrial and warehouse districts. Aging built-up roofing and failing seams from constant forklift and truck vibration create repair demand unseen in neighboring residential cities. Very little of Commerce is single-family housing; most buildings are mid-century industrial and commercial structures with built-up, modified bitumen, or single-ply membranes, many original to the 1960s through 1980s.
On a warehouse off Bandini Boulevard, our crew found the original gravel-surfaced built-up roof had lost most of its ballast after a winter storm. We cold-applied a modified bitumen patch over the alligatored asphalt, then restored a fresh gravel layer to protect the membrane from the next summer’s UV. The owner approved the written change order before we opened the roof, so the repair stayed within the agreed allowance.
This is the single biggest reason a roofing quote in Commerce moves: once a roof is opened, the decking below may be wet, deteriorated, or undersized for today’s loads. We handle it with inspection first, allowances written into the contract, and every surprise priced and approved in writing before we touch it. That’s how a real roofing company in Commerce protects you from a five-figure surprise.
Contact Mercer Roofing Co Los Angeles in Commerce
When you’re ready for a written estimate, call (213) 521-8272. A live person answers, 24/7. We’ll schedule the inspection, send the technician’s name and photo before the visit, and hand you a written price before any work starts. That’s the Mercer Roofing standard in Commerce, and it’s how we’ve protected roofs here since 2000, as part of the Threshold Group family.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving Commerce, CA.