Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterRoofers in Commerce, CA
Roofing work in Commerce, CA is overwhelmingly commercial, focused on flat and low-slope membrane systems rather than the shingle roofs common in neighboring cities. Most jobs involve TPO, EPDM, or modified bitumen on postwar industrial warehouses and distribution centers, where accumulated overlay layers and California Title 24 cool-roof mandates complicate every project. We’re Mercer Roofing, and our crews are equipped and credentialed for Class A commercial flat-roof work throughout Commerce’s industrial corridor. Call (743) 200-8347 to schedule your free estimate.
Why Commerce Homes Are Different
Commerce is one of the most intensely industrialized municipalities in California, a city of warehouses, distribution centers, and manufacturing plants with almost no residential neighborhoods to speak of. Nearly all roofing work here involves large flat or low-slope commercial roofs demanding membrane systems rather than the asphalt shingles that dominate neighboring residential cities like Montebello or Monterey Park. A roofing contractor working Commerce must be credentialed and equipped for Class A commercial flat-roof work above all else.
The tiny residential footprint that does exist consists largely of older mid-20th-century worker housing, 1940s to 1960s bungalows and small multi-family buildings. But the overwhelming building stock is postwar industrial, sprawling single-story warehouses and distribution facilities, most with flat or low-slope built-up roofing systems that are decades old and increasingly vulnerable to ponding water failures and membrane delamination.
Commerce sits within the dense urban-industrial corridor straddling the I-5/SR-60 interchange, where an enormous concentration of dark flat industrial rooftops intensifies the local urban heat island effect well beyond typical LA basin conditions. California Title 24 cool-roof mandates on commercial re-roofing projects carry outsized financial and compliance weight here, pushing clients toward reflective TPO and elastomeric coatings. Many of Commerce’s postwar industrial buildings have never had a full tearoff, just successive overlay after overlay of modified bitumen or BUR, and it’s common to expose three or four accumulated roofing layers on a single reroof job, requiring a structural load evaluation before any new system can be spec’d and permitted.
Our Main Commerce Services
Commerce property managers and facility directors call us most often for these three services, each with its own dedicated Commerce page:
Roof Repair in Commerce
Commerce repair work typically means stopping active leaks in aging flat-roof systems before inventory or equipment is damaged. We find membrane splits at penetration points, deteriorated flashing around HVAC curbs, and ponding water zones where the substrate has softened. Our technicians carry TPO and EPDM patch materials, sealants, and reinforcement fabrics on every truck, so most repairs are completed in a single visit without waiting for parts. Every repair comes with our written 365-Day Done Right Promise. Roof Repair in Commerce
Roofing Company in Commerce
As a full-service roofing company in Commerce, we handle everything from emergency leak response to complete re-roofing of multi-acre distribution facilities. We pull all permits, coordinate with LA County for structural load evaluations when multiple overlay layers are present, and spec systems that meet Title 24 cool-roof requirements. Our written price is provided before any work starts, and every technician’s name and photo are sent ahead of the visit. Roofing Company in Commerce
Roof Installation in Commerce
New roof installation in Commerce almost always means commercial flat-roof systems on industrial buildings, not residential shingle jobs. We install TPO, EPDM, modified bitumen, and elastomeric coating systems, working with structural engineers when accumulated overlay layers require load evaluation. Every installation uses manufacturer-recognized materials and carries a written guarantee. We coordinate inspections and ensure full Title 24 compliance before final sign-off. Roof Installation in Commerce
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Commerce
We install and repair with Atlas, Tamko, Boral, and GAF products, among others, and stock common membrane materials and fasteners locally for faster turnaround on Commerce’s urgent repair calls. See our brands for the full list of manufacturer partners we work with.
Pricing for Roofers in Commerce, CA
| Service | Typical range in Commerce |
|---|---|
| Commercial flat-roof leak repair (TPO/EPDM patch) | $450 – $1,200 |
| Modified bitumen repair (up to 100 sq ft) | $600 – $1,500 |
| Roof coating (elastomeric, per square) | $150 – $350 |
| Partial re-roof (TPO, per square) | $400 – $700 |
| Full tearoff and TPO re-roof (per square) | $550 – $950 |
| Structural load evaluation coordination | $800 – $2,000 |
| Title 24 cool-roof compliance upgrade | $1,500 – $4,500 |
| Emergency leak response (after-hours) | $350 – $750 |
| Skylight or curb flashing replacement | $500 – $1,400 |
| Drain and scupper repair/replacement | $400 – $1,100 |
What pushes Commerce prices higher: accumulated overlay layers requiring structural evaluation, Title 24 cool-roof mandates adding material and compliance costs, and the urban heat island accelerating membrane deterioration. We always provide a written, line-item price before any work starts, no exceptions.
Neighborhoods We Serve in Commerce
Commerce’s limited residential areas and extensive industrial zones are all within our service area. Dispatch and scheduling are coordinated from our Los Angeles office, with crews serving Commerce locally. Typical response time for emergency leaks is under two hours during business days.
- Eastside Commerce (industrial/warehouse district)
- Bandini Boulevard corridor
- South Commerce (I-5 corridor facilities)
- Washington Boulevard industrial zone
- Randolph Street area
Service Area – Cities Near Commerce
Our crews also serve the broader Los Angeles basin, including Los Angeles, CA, San Diego, CA, San Jose, CA, and San Francisco, CA. Each location operates under the same Threshold Verified standard: background-checked, photo-badged, uniformed technicians on every visit.
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 Roofers in Commerce
Yes, commercial flat-roof work in Commerce requires a C-39 roofing contractor licensed by the California Contractors State License Board, plus proper classification for the membrane systems being installed. We carry the required credentials and pull all permits for every job. Call (743) 200-8347 to verify our standing.
California Title 24 requires cool-roof performance on most commercial re-roofing in Commerce, meaning reflective TPO, white EPDM, or elastomeric coatings that meet minimum solar reflectance values. We spec every Commerce project for compliance and handle the documentation. Call (743) 200-8347 for a free estimate with Title 24 options included.
Yes, we schedule Commerce industrial work for evenings, weekends, or shutdown periods to minimize disruption to distribution and manufacturing operations. Our live dispatch team is available 24/7 to coordinate timing that protects your workflow. Call (743) 200-8347 to arrange a site visit that fits your schedule.
Ready to protect your Commerce property? Call (743) 200-8347 to schedule your free estimate. We’ll send a written, line-item price before any work starts, and every technician’s name and photo before they arrive at your door.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Commerce Customers Say
"Roofer showed his ID and gave me the crew lead's name before anyone climbed the ladder. Replaced a patch of missing shingles and resealed two vent boots. Written estimate matched the final bill."
- Brian J."Full tear-off and new shingles on our two-story. They covered the landscaping with tarps and ran a magnet over the yard afterward. Didn't find a single nail."
- Karen V."Good roof repair. The crew was a day later than planned because of rain, which I understand, but the scheduling got moved twice. Work itself is clean and has held up."
- Dale T.