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 Roof Replacement Across Commerce
A full roof replacement on a typical Commerce home runs between $9,800 and $18,500 depending on the roof’s pitch, decking condition, and material you choose. Most projects here take five to nine working days from tear-off to final inspection. If you’re calling from a mid-century stucco house near Bandini Boulevard or a warehouse flat roof off Eastern Avenue, we know what you’re dealing with before we even climb up.
Koreatown Roofing has crews working in Commerce weekly. We’re not a general contractor that subs out roofing. We’re roofing specialists, and we carry material options from seven manufacturers so you actually get a choice on your own roof. Call (866) 974-2271 to schedule a free inspection and written line-item estimate. No pressure, just numbers you can compare.
Why Koreatown Roofing Is Commerce’s Preferred Roof Replacement Company
Commerce is a small city with a split personality when it comes to roofs. Half the work here is flat TPO and modified-bitumen over warehouses and manufacturing buildings along the rail corridor. The other half is original composition shingle on 1950s and 1960s single-story stucco homes, baked brittle by inland sun. We do both, and we do only roofing. Not kitchens, not bathrooms, not additions. That focus means our estimate reflects what your roof actually needs, not what a generalist hopes to upsell.
Manny Cordero runs our team with a straightforward rule: inspect first, price second, and put every change in writing before we touch it. Homeowners in Commerce tell us the same thing again and again – they got a low quote from someone who never looked at their valleys or decking. Then the surprise invoice lands. We don’t work that way. Our crew has tore off enough original Commerce roofs to tell you what’s under the shingles before we start.
Response time to Commerce from our core yard is short. We schedule inspections within a few days, and we carry common decking, underlayment, and flashing stock locally so material delays don’t stall your job once it’s underway. The city’s building department has its own rhythm, and we’re familiar with how Commerce processes reroof permits and inspections. That familiarity keeps your project moving without guesswork.
Styles & brands we work with
Asphalt Shingle Roof Replacement in Commerce
Asphalt Shingle Roof Replacement on Commerce’s mid-century homes usually means tearing off one brittle layer of 3-tab, inspecting the decking, and setting a new architectural shingle system. A standard single-story home here runs $9,800 to $14,200 for architectural asphalt, assuming the decking is sound. If the decking is soft – and on 1950s low-pitch roofs it often is – you’ll add roughly $2.50 to $3.50 per square foot for plywood or OSB replacement, plus disposal.
When the original shingles have had enough
Commerce summer sun bakes composition shingles until the granules are gone and the mat underneath is cracked and curling. We see roofs off the 5 and 710 where the south-facing slopes fail years before the rest of the roof. If you can see bare fiberglass or curled corners from the street, the roof’s past its service window.
Replacing decking and valleys the easy way
The smart time to replace soft decking is during the reroof, not after it leaks. We write a decking allowance into our contract up front, so when we find rot, we photograph it, mark the square footage, and get your approval in writing before cutting new plywood. No surprise invoice at the end. No vague “as needed” line items.
New Roof Installation in Commerce
New Roof Installation on a Commerce home or an accessory structure follows the same path: we tear off the old system, correct the decking, and build up a new roof that suits the building’s pitch and the property’s exposure to diesel soot and sun. New construction and full tear-offs on detached garages, ADUs, or rebuilt homes here typically run $11,500 to $18,500, depending on the roofline and material spec. A simple gable roof with architectural shingles lands on the lower end; steep or complex roof shapes with multiple valleys run higher.
Choosing materials that make sense in Commerce
We don’t stock one brand and try to make it fit every job. GAF and CertainTeed architectural lines perform well on pitched mid-century homes here. For flat and low-slope sections, modified bitumen and TPO make sense where sun and standing water at drains and scuppers are the real enemy. Your roof, your material choice – we’ll walk you through the trade-offs in plain language.
Protecting the valleys before they leak again
Low-pitch valleys on small Commerce homes trap water longer than steep roofs do, so valley protection matters more here than it does in the hills with better drainage. We use ice and water shield in valleys, around penetrations, and at drip edges as standard on full replacements. It’s cheap insurance compared to re-sheeting a rotted valley deck in three years.
Trusted Brands We Service in Commerce
We work with the brands you already trust – GAF, CertainTeed, Owens Corning, and Boral among them – and we don’t push a single supplier just because it’s convenient for our inventory. That means when we recommend an architectural shingle or a flat membrane for your Commerce roof, it’s because it fits the slope, the sun exposure, and your budget. We keep fast-moving flashing and underlayment stock on hand for Commerce jobs, so small repairs don’t stall a full replacement waiting on a delivery truck. One contractor, every stage: inspection, repair, replacement.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Commerce Homes
- Sun-baked original shingles from the 1950s and 60s. Inland UV here breaks down organic mat shingles faster than coastal air. By the time we tear them off, they snap like crackers, and the decking underneath is often wet-rotted at the valleys.
- Soft decking hidden under brittle shingles. Low-pitch roofs trap water longer near the eaves and valleys. We find soft plywood on a large share of Commerce replace rooves, and it never shows from the ground until the old shingles are off.
- Failed flashing at drip edges and penetrations. Diesel soot from truck traffic near the rail yard and freeways grinds into metal over time. Rusted drip edge and corroded pipe boots are common, especially within a few blocks of Eastern, Bandini, and the 710 corridor.
- Ponding at flat roof drains and scuppers. On the industrial flat roofs that dominate Commerce’s building stock, standing water at scuppers accelerates membrane wear fast. We see modified-bitumen and TPO failures concentrated around drains, not across the whole field.
Pricing for Roof Replacement in Commerce, CA
Here’s what you can expect in Commerce right now. A basic architectural shingle reroof on a 1,200 to 1,500 square foot single-story house runs $9,800 to $14,200. Full tear-off with decking replacement, new fascia, and upgraded valley protection lands between $14,500 and $18,500. New construction and complex rooflines start around $11,500 and go up from there. Flat roof replacement on a smaller commercial bay runs $8 to $12 per square foot installed. What moves the number: decking condition, roof pitch and cut-up geometry, material choice, and whether the old roof has two layers to tear off. Our estimates are free, in writing, and line-item detailed. Call (866) 974-2271 and we’ll send someone out to inspect before we quote.
We Also Serve Cities Near Commerce
If your property sits across the city line, we regularly work in Maywood, Bell, Cudahy, and Bell Gardens too. Our Roof Replacement team handles mid-century shingle homes and flat commercial roofs throughout this pocket of Los Angeles County. When you’re in Commerce or any of those neighbors, the same focused roofing crew shows up – not a rotating subcontractor.
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 Replacement in Commerce
Because the original bidder never looked under the shingles. On 1950s and 1960s Commerce homes, the low-pitch valleys and overhangs trap water for decades, and the decking rots from the top down. Once we tear off the sun-baked shingles, we often find a third or more of the plywood needs replacement. A low quote is a guess. We write a decking allowance into the contract and show you photos of the rot before any new material goes down. Call (866) 974-2271 for an estimate that treats decking as a real line item, not a surprise.
Yes, Commerce requires a building permit for a roof replacement, and the inspection typically triggers code checkups for the decking attachment and edge details. If the decking is rotten or the sheathing is thinner than current code allows, the inspector can require replacement. We handle the permit and schedule the inspection, and our contract includes allowances for code upgrades so you’re not blindsided mid-job. We recommend having a professional handle the permit – roof work at height and code compliance are not worth improvising.
Line up the line items side by side, not the bottom line. One Commerce bid might skip decking replacement, valley membrane, or permit fees to look cheaper. Another might spec the cheapest 3-tab shingle while we’d quote an architectural shingle with a longer real-world lifespan under inland UV. Ask each bidder what they’ll do if the decking is soft, what membrane goes in the valleys, and whether the permit and dump fees are included. Then call (866) 974-2271 and we’ll walk through our numbers with you, no games.
Yes. Commerce’s industrial tax base means much of our roofing work here is flat TPO and modified-bitumen near the rail yard and along the freeway corridors, not just houses. So the same crew that patches a sun-baked shingle roof near the Civic Center might re-membrane a warehouse flat roof off Eastern Avenue that same week. We bid both types of work from the same office, with material options across seven manufacturers, so you’re not calling a separate company depending on what your building looks like.
We set ice and water shield in every valley, around plumbing stacks, at chimneys, and behind drip edges as standard on full replacements. On a 1958 single-story stucco house off the rail corridor, our crew tore off the original 3-tab shingles and found the drip edge rusted through and about a third of the decking soft where the low-pitch valleys had trapped water for decades. We replaced the decking, laid down ice and water shield in the valleys, and set new architectural shingles with a starter strip and ridge vent – then wrote up the decking and fascia repair as a signed change order before the homeowner ever saw an invoice. For an exact quote on your Commerce roof, call (866) 974-2271 – estimates are free.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Commerce and nearby communities with focused roofing inspection, repair, and replacement.