Architectural shingles
Metal roofing
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 Repair Across Commerce
Roof repair in Commerce, CA typically runs $350 – $1,600 for most residential fixes, with leak repairs starting around $350 and full commercial flat roof patches running $900 – $3,200 depending on membrane type and damage extent. We know Commerce’s roofs sit under a load most cities never deal with: diesel soot from the 710 and I-5 freight corridors, refinery fallout drifting off the industrial belt along Telegraph Road, and decades of sun on 1950s composition shingles. If you’ve spotted staining, curling shingles, or a wet spot on the ceiling, call Ridge Cap Roof Repair at (866) 361-0798 and we’ll send a tech who actually knows what Commerce roofs go through.
Key Takeaways
- Roof repair in Commerce typically runs $350 – $1,600 for residential work; flat commercial patches run $900 – $3,200.
- Diesel soot and refinery fallout shorten shingle life here and clog gutters and flat-roof drains faster than in surrounding cities.
- We inspect before we recommend. Repair when it makes sense. Replace when it doesn’t.
- Led by Noel Cardenas, our crew handles steep-slope homes and hot-mop/modified-bitumen commercial roofs without subcontracting.
Styles & brands we work with
Why Ridge Cap Roof Repair Is Commerce’s Preferred Roof Repair Company
Commerce is a city of two roof worlds. The residential pockets off Eastern Avenue and south of the 5 are mostly single-story tract homes from the 1950s and 60s, with low-pitch roofs and original decking that predates modern plywood standards. A mile away, the warehouse district along Slauson and Bandini is all flat, hot-mop and modified-bitumen roofs carrying HVAC units, vents, and decades of patchwork repairs. Most roofing companies lean one direction or the other. We work both, with the same crew from Roof Repair to full replacement, because our service model is built on inspection, repair, and replacement under one roof. No hand-offs, no subcontractors who never saw the original findings.
Noel Cardenas runs our crews with a simple rule: inspect before we recommend. That means when a Commerce homeowner calls about a ceiling stain, we don’t quote a new roof over the phone. We get on the roof, we look at the decking, the flashing, the drainage path, and the condition of the shingles themselves. Then we tell you what’s actually wrong. Sometimes it’s a $400 repair. Sometimes it’s a decade of deferred maintenance and the math points to replacement. Either way, you’ll know why.
Commercial Roof Repair in Commerce
Commercial Roof Repair in Commerce is a different animal from residential work because so much of this city’s roofing stock is flat or near-flat, bearing the full brunt of the LA Basin’s soot load and the daily rumble of truck traffic off the 710. We repair hot-mop asphalt, modified-bitumen, and single-ply membranes on warehouses, light-industrial buildings, and mixed-use structures, focusing on the places flat roofs fail first: seams, penetrations, drain collars, and parapet flashings.
Flat Roof Patches and Membrane Work
A flat roof patch in Commerce runs $900 – $2,800 on average, depending on membrane match and square footage. We cut back the failed membrane, dry out the saturated insulation board if needed, and weld or mop in a matched material so the repair doesn’t become the next leak. On commercial buildings near the freight corridors, we also clear packed drain baskets and scuppers. Soot and grit settle there year-round, and when a drain plugs, standing water finds every weak seam in the building.
Flashing and Parapet Repair
Parapet walls and cap flashings are the most repaired details on Commerce commercial roofs. The repeated expansion and contraction of hot days and cool nights works metal loose over time, and once the cap flashing lifts, water gets behind it and into the wall cavity. We reseal and re-secure lifted flashing, replace cracked counterflashing, and when the parapet itself is spalling or leaning, we recommend a structural look before the membrane work proceeds.
Roof Leak Repair in Commerce
Roof Leak Repair in Commerce usually starts with a call about a ceiling stain that showed up after the first real rain of the season. That timing is not a coincidence. The long dry stretch from May through October means a small flashing breach or cracked pipe boot can sit there, leaking into the attic only when water finally hits it, and by then the underlayment and original 1950s decking have often soaked through. We trace the water path from the interior stain up to the actual roof breach, because the entry point is rarely directly above the stain.
Flashing, Valley, and Vent Boot Repairs
Valley metal and pipe and vent boots are the most common leak sources on Commerce’s post-war homes. A valley repair runs $400 – $900; a vent boot replacement runs $350 – $600. We replace rusted valley metal, reset and seal lifted flashing, and swap out cracked neoprene boots with new units sized to the pipe. These are the repairs that stop water before it reaches the decking.
Shingle Replacement on Commerce’s Aging Roofs
Shingle replacement in Commerce runs $450 – $1,100 for a typical repair area of 100 – 300 square feet. The original composition shingles on these 1950s and 60s homes are often brittle from decades of sun and the steady fallout load. We match the existing shingle as closely as the current market allows, and we inspect the underlayment and decking below before we nail anything down. Putting new shingles on rotted decking is a waste of your money.
Trusted Brands We Service in Commerce
Commerce homeowners and property managers shouldn’t be locked into one manufacturer’s product line because that’s what the contractor happens to stock. We install and service materials from seven major manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. Seven manufacturers. One crew. That gives us the freedom to match material to climate, roof pitch, and budget without pushing a single brand’s warranty tier. If your existing roof is CertainTeed, we repair it with CertainTeed. If the right long-term play is an Owens Corning or IKO product, we’ll tell you why.
Common Roof Repair Problems We See in Commerce Homes
- Soot-packed gutters and flat-roof drains. The diesel and refinery fallout that darkens Commerce shingles also settles in gutters and drain baskets. Water backs up under the drip edge, rots the fascia and decking, and causes leaks that have nothing to do with the shingles themselves.
- First-rain leak surprises. Long dry summers let small flashing breaches sit unnoticed for months. When the winter rains finally come, the leak is already in the underlayment and original decking, not just on the surface.
- Santa Ana wind damage on low-pitch roofs. Aged, sun-brittle shingles and membrane edges on Commerce’s post-war homes crease and lift under dry-season wind. That opens nail lines and ridge vents to water intrusion months later.
- Original 1950s decking under failing shingles. Many Commerce homes still have their original 1x decking. When shingles fail, the decking below has often been quietly rotting for years. We check it every time, and we price replacement in writing before we pull a board.
See the difference
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After
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AfterPricing for Roof Repair in Commerce, CA
Here’s what we see in Commerce: minor shingle or vent boot fixes run $350 – $600; valley and flashing repairs run $400 – $900; larger shingle replacement areas run $450 – $1,100; flat commercial patches run $900 – $3,200. What moves the number is what we find underneath: rotted decking, compromised fascia, saturated underlayment. That’s why we inspect first and quote in writing before any surprise work is approved. We never hand you a change order after the fact. You’ll know the cost before we touch it.
We Also Serve Cities Near Commerce
We take roof repair calls from Commerce and the surrounding cities of Roof Repair in Commerce, Maywood, Bell, Cudahy, and Bell Gardens. If your roof sits under the same soot load and the same winter rains, the problems are the same and so is our fix. Call (866) 361-0798 and tell us what you’re seeing.
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
Your roof is black and streaky because Commerce sits under a constant settling of diesel soot from the 710/I-5 corridors and refinery fallout from the industrial belt along Telegraph Road. That gritty film bonds to shingle granules, darkens the surface, and accelerates granule loss years ahead of schedule. The same grit packs gutters and flat-roof drains, which becomes its own leak problem. We can assess whether the streaking is surface-level wear or actual shingle degradation. Call (866) 361-0798 for a roof inspection and get an honest read on what’s cosmetic and what’s not.
You didn’t see it because Commerce’s long dry stretch from May through October means small breaches in flashing, valleys, or vent boots only show themselves when rain actually hits the roof. By the first winter storm, water has often soaked into the underlayment and original 1950s decking. The fix then involves more than surface repair. We trace the water path from the interior stain to the actual entry point, because the leak source is rarely directly above where you see the stain. Call (866) 361-0798 and we’ll find the real source, not just patch the symptom.
It can. When a repair exposes structural decking, framing, or requires changes to roof sheathing, a permit is typically required, and once the walls are open, the inspector may flag code upgrades that were never part of the original roof. That’s exactly why we inspect first, write realistic allowances into the contract, and price any surprise in writing before we pull a single board. You approve the number before we spend it. Call (866) 361-0798 to schedule a repair estimate that accounts for what commerce’s older homes actually hide.
Yes. Commerce is a city of flat warehouse roofs and low-pitch post-war tract homes, often within blocks of each other. We work both: hot-mop and modified-bitumen on commercial buildings, composition and architectural shingle systems on residential. The same crew does the inspection and the work, so the findings don’t get lost in a hand-off to a subcontractor. If you’re comparing bids for a commercial property or a home, call (866) 361-0798 and we’ll walk you through the scope.
Put the bids side by side and look at three things: what’s included in the base scope, what allowances are written in for hidden decking or framing, and what happens when a surprise is found. The lowest bid usually has the thinnest allowances, and the surprise hits you as a change order later. We write allowances into every Commerce quote, and any unforeseen work is priced and approved in writing before we start. That’s the only honest way to compare numbers. Call (866) 361-0798 for a line-item estimate you can actually hold up against the next bid.
What Commerce Homeowners Actually Find When We Open the Roof
This is the part nobody tells you about repairing older Commerce homes. What starts as a $600 flashing repair can become a $2,400 job once the shingles come up. Why? Because these 1950s and 60s tract homes were built with 1x decking that predates modern plywood, undersized fascia, and flashing details that were never great to begin with. Add fifty years of soot loading, and you get decking that’s springy underfoot, fascia that crumbles when you touch it, and drip edge that’s rusted through behind the gutter. We opened up a roof repair on a 1956 single-story off Telegraph Road and found the leak wasn’t the shingles at all. Soot-packed gutters had backed water up under a decayed run of drip edge and soft fascia, and the original 1x decking was springy underfoot. We replaced the rotted fascia and decking, laid new ice and water shield in the valleys and along the penetrations, and reset drip edge and starter strip before matching the existing architectural shingles. We priced the decking and fascia surprise in writing and got approval before we pulled a single board.
That’s how Ridge Cap handles every Commerce job. Inspection first, allowances written into the contract, and any surprise priced and approved in writing before we touch it. That’s the whole game. If a contractor won’t show you what’s under the shingles before quoting, you’re buying a gamble, not a roof repair.
Call Ridge Cap Roof Repair for Your Commerce Roof
From the ridge cap down, a roof is only as good as the details nobody sees. That’s where we work. If you own a Commerce home or commercial building, call Noel Cardenas and the Ridge Cap Roof Repair crew at (866) 361-0798 for a free estimate. We’ll inspect what’s actually failing, tell you the honest repair-and-replacement math, and put every number in writing before work starts. Repair when it makes sense. Replace when it doesn’t. We’ll show you which one you’re looking at.
Written by Noel Cardenas, Owner at Ridge Cap Roof Repair, serving Commerce and the surrounding cities of the LA Basin.