Metal roofing
Architectural shingles
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Repair Across Commerce
Roof repair in Commerce typically runs $350 to $1,200 for common fixes like shingle replacement and flashing repair, while flat roof patches on the industrial buildings near the rail yard usually land between $800 and $2,500 depending on membrane type and damage extent. Most repairs here are done same-week, not same-day, because we match materials and write up clear change orders before work starts. If you own a home off Downey Road or a warehouse along the Union Pacific corridor, you already know the sun and truck traffic don’t wait. Call Koreatown Roofing at (866) 974-2271 and we’ll give you a straight answer about what your roof actually needs.
Why Koreatown Roofing Is Commerce’s Preferred Roof Repair Company
We’re a roofing-only contractor. That matters in Commerce because the repair needs here swing hard between two very different buildings: mid-century stucco homes on tight residential blocks and flat-roofed commercial structures along Bandini Boulevard and the 710 corridor. A general contractor who does kitchens and bathrooms on the side isn’t going to know that a warehouse roof near the rail yard ages differently than a 1956 house on Jillson Street. We do.
Manny Cordero runs our crew, and our reputation is tied to every roof we touch in this city. We’ve worked on homes in the neighborhoods around Rosewood Park and industrial buildings near the Citadel outlet area. When you call, you get a roofer who’s already worked your block, not a call center that routes you to whoever’s available.
We’re not a franchise. We’re a neighborhood-identity brand, which means if we do sloppy work in Commerce, our name carries that. That’s exactly the accountability you want when you’re deciding who gets to tear into your roof.
Styles & brands we work with
Emergency Roof Repair in Commerce
Emergency Roof Repair in Commerce almost always means water coming through a roof that held up fine all summer and then met the first real storm of the season. The short, intense rainy window here catches a lot of 1950s and 1960s homes off guard, because those original composition shingles have been baking for 60 or 70 summers and they’re brittle enough to crack under a hard rain. We respond to Commerce calls the same day when there’s active water intrusion, and we stabilize the leak before giving you the full repair scope. The cost depends on what we find, but an emergency tarp and leak triage typically runs $400 to $750, and the actual repair work is quoted separately after we open things up.
Leak Triage and Temporary Sealing
We stop the water first. That means finding the entry point, clearing any clogged scuppers or drains on flat sections, and sealing or tarping the area so your ceilings and insulation don’t get worse. Then we document what we found and give you a written scope before we do anything permanent.
When a Leak Becomes a Decking Job
On older Commerce homes, water that’s been sneaking under shingles for months often rots the 1×6 skip sheathing beneath. You won’t see that from the ground. We check for soft decking every time we open a repair, and we write up any deck replacement as a clear change order before we put new material down.
Flat Roof Repair in Commerce
Flat Roof Repair in Commerce is a different trade than shingle work, and it’s the dominant repair call in this city. The industrial buildings along the rail corridor and the 5 and 710 freeways carry TPO, modified-bitumen, and built-up roofs that fail from heat aging, ponding water at scuppers, and diesel soot that sits on the membrane and accelerates degradation in ways you simply don’t see in neighboring Maywood or Cudahy. A typical flat roof patch in Commerce runs $800 to $2,500, while full coating or targeted membrane replacement can push higher depending on square footage and drainage conditions.
Scupper and Drain Failures
Standing water is the enemy of every flat roof, and in Commerce it pools at scuppers where debris from truck traffic and rail dust collects. We clear the drainage path, repair or replace the scupper flashing, and patch the membrane around it so water moves off instead of sitting and cooking in the summer heat.
TPO and Modified-Bitumen Patches
We match the membrane, not just the color. If your warehouse roof has a TPO surface, we patch with compatible TPO and heat-weld seams so the repair holds. If it’s a granulated mod-bit roof, we use torch-grade modified bitumen. Matching materials matters because a mismatched patch fails at the seam within a season or two, and you’re back where you started.
Trusted Brands We Service in Commerce
Koreatown Roofing works with seven different roofing manufacturers, which means we’re not going to tell you your only option is whatever brand we happen to have a deal with. If your Commerce home needs shingle replacement, we can quote you GAF or CertainTeed architectural shingles. If a flat roof section needs a new cap sheet, we can source Owens Corning or a modified-bitumen product from a manufacturer we trust for that specific application. Your roof, your material choice. We keep common repair stock accessible, which means fewer delays when you need a valley rebuilt or vent boots replaced before the next rain.
Common Roof Repair Problems We See in Commerce Homes
- Brittle original composition shingles. The 1950s and 1960s homes that make up most of Commerce’s residential stock still carry their first or second layer of 3-tab shingles. After decades of inland LA Basin sun, they crack, curl, and shed granules until winter rains find the gaps.
- Soot-loaded flat roofs near the rail yard. Diesel exhaust particulates settle on TPO and mod-bit membranes along the Union Pacific corridor and the 710. That soot holds heat and breaks down the membrane surface faster than the same roof would age in a coastal city or a purely residential block.
- Hidden decking and drip-edge rot. On a 1958 stucco home near the rail yard, our crew opened up a section of failed 3-tab shingles and found the original 1×6 skip sheathing was soft and the drip edge had rusted through. We replaced the decking, added ice and water shield in the valleys, and installed new architectural shingles with a starter strip and ridge vent, then wrote up the framing repair as a change order before nailing anything down.
- Ponding at flat roof drains. Commercial and even some residential flat sections in Commerce hold water at drains that haven’t been cleared in years. That standing water works into the membrane and finds the seams, which is why we treat drainage as part of the repair, not an afterthought.
See the difference
Before
After
Before
After
Before
AfterPricing for Roof Repair in Commerce, CA
Here’s what we see in Commerce specifically. Shingle replacement on a mid-century home runs $350 to $900 for a typical repair section, depending on size and whether we need to open the decking. Flashing repair around chimneys, vents, or parapet walls lands between $250 and $700. Flat roof patches on commercial buildings run $800 to $2,500, with full scupper rebuilds or large membrane sections going higher. What moves the number is almost always what we find underneath: soft decking, rusted drip edge, or failed underlayment that has to come out before new material goes on. We’ll give you a free written estimate, and we won’t change the price without your approval. Call (866) 974-2271 to schedule one.
We Also Serve Cities Near Commerce
Our crews work throughout the industrial southeast corridor. If you’re in Maywood, Bell, Cudahy, or Bell Gardens, we handle Roof Repair calls there too, and you’ll get the same roofing-only crew that works in Commerce every week. Koreatown Roofing serves the full corridor around Commerce, from Bandini Boulevard to the 710 frontage roads, and into the neighboring residential blocks where the housing stock looks a lot like what we see off Jillson and Eastern.
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 Roof Repair in Commerce
Expect the unexpected beneath the shingles. Homes built in the 1950s and 1960s in Commerce often have original skip sheathing, older underlayment, and wiring or framing details that don’t meet today’s code once walls or decking are opened. A shingle repair can turn into a decking replacement or a code-triggered upgrade, which is why we walk you through findings as we go and get written approval before any extra work. Call (866) 974-2271 for an inspection that tells you the real story.
Diesel soot from the rail yard and freeway corridors settles on flat membranes, holding heat and degrading TPO and modified-bitumen faster than the same roof would wear in a residential suburb. That means flat roof repairs in Commerce need membrane-matched patches and attention to scupper and drain flow, which is exactly what our crews do on the industrial buildings along Bandini and the 710 corridor.
Yes, when there’s active water coming into your home or building, we respond the same day and stabilize the area with sealing or tarping. Emergency triage in Commerce typically costs $400 to $750, and the permanent repair gets quoted separately once you approve the scope. Call (866) 974-2271 if you’ve got water where it shouldn’t be.
We work with seven manufacturers, including GAF, CertainTeed, and Owens Corning, and source materials based on what your roof actually needs. That means architectural shingles on a 1950s Commerce home, or TPO and modified-bitumen products matched to the membrane on a flat industrial roof. We stock common repair parts so we’re not waiting on materials when your roof is open.
It can, and that’s the part most contractors don’t mention until the surprise hits. When a repair opens up framing, decking, or electrical that’s out of current code, the city may require upgrades as part of the permit. We write allowances into the contract where we can and price out any additional work in writing before proceeding, so you’re never staring at an unexpected invoice at the end.
Get Your Commerce Roof Looked At Before It Leaks
Roof problems don’t announce themselves politely. They show up as a water stain the week it finally rains, or a warehouse tenant calling about a drip over the loading dock. If you own a home or commercial building in Commerce, the best move is a clear-eyed inspection that tells you what’s wearing out now and what can wait. Koreatown Roofing handles inspection, repair, and replacement, all under one roof. Call (866) 974-2271 for your free estimate, and talk to Manny’s team about what your building actually needs.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Commerce and the surrounding corridor with roofing-only expertise.