Roofing Contractor in Commerce, CA Built for Dry Summers and Winter Storms
In Commerce, a roof can look fine for eight straight months. Then the first atmospheric river of the winter comes through and you find out about every cracked flashing joint, ponding spot, and worn shingle at once. Add 95°F-plus heat, year-round UV, Santa Ana gusts, and diesel grime blowing off the I-5 and I-710, and roofs here wear out faster than most people expect. Commerce Roofing Company has been fixing that problem since 2005. We find the damage during the dry months, repair or replace it properly, and get your home or building ready before the rain shows up.
We've worked on the roofs this area actually has: 1920s bungalows in Bell and Huntington Park, postwar stucco ranches in Bandini and Rosewood Park, concrete-tile homes along Monterey Park's Garvey corridor, and huge flat-roof warehouses in the Vernon industrial district. We know which homes probably have skip sheathing hiding under old shake, which patio covers tend to leak, and which building department handles your permit. We're bonded and insured, we put estimates in writing, and we cover a 20-mile radius from Commerce.
- ✓Serving Commerce and the Gateway Cities since 2005
- ✓Bonded and insured
- ✓Financing available
- ✓Free written estimates
- ✓Residential and commercial roofing
- ✓Emergency roofing and roof tarping
- ✓20-mile service radius from Commerce
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Why Commerce and Southeast LA Roofs Wear Out Differently
The southeast LA Basin is hard on roofs in its own way. We don't get much hail or snow here. Instead, roofs take a long, hot, dry beating and then get hit with a few very heavy storms. Most of the houses they sit on are 60 to 100 years old, and the local permit rules can trip up homeowners who haven't dealt with them before.
Climate: Long Dry Heat, Then It All Comes at Once
Commerce gets about 14–15 inches of rain a year, and almost all of it falls between November and March. The other seven or eight months are close to rain-free, so a cracked boot or lifted shingle can go unnoticed until a storm finds it. Atmospheric rivers like the ones in early 2023 and February 2024 dropped several inches in a few days. That flooded clogged gutters and left water standing on low-slope roofs. Summer highs regularly hit the upper 80s and 90s, and September and October heat waves can top 100°F. Dark shingles and torch-down surfaces get much hotter than the air, which speeds up granule loss and blistering. Big swings between day and night temperatures keep flashing and seams expanding and contracting. Santa Ana winds loosen ridge caps, and soot from the freeways and rail yards clogs drains and scuppers.
Built Environment: Old Homes, Layered Roofs, Hidden Additions
Most homes in Commerce and the Gateway Cities went up between the 1920s and 1960s. Bell, Maywood, Walnut Park, and Belvedere Gardens in East LA have a lot of Craftsman cottages and Spanish Colonial homes with clay tile. Commerce, Bell Gardens, Pico Rivera, South Gate, and Downey mostly filled in after WWII with shallow-pitch stucco ranches. Those homes often have two or three shingle layers, skip sheathing left over from wood-shake roofs, dry-rotted fascia, and old tar-and-gravel on flat sections. Unpermitted rear additions, garage conversions, and patio covers tied poorly into the main roof are some of the most common leak sources we see. On the commercial side, the warehouses, cold-storage buildings, and distribution centers in Commerce and Vernon have acres of built-up, mod-bit, TPO, and metal roofing, plus skylights and rooftop HVAC units.
Regulations: Permits, Cool Roofs, and Layer Limits
Every re-roof here needs a permit, but who issues it depends on where you live. LA County Building and Safety covers Commerce, East LA, Florence-Graham, Walnut Park, and East Compton. Downey, South Gate, Huntington Park, Montebello, Alhambra, and several other cities run their own building departments, and LADBS handles the City of LA. Title 24 Part 6 requires CRRC-rated cool-roof products on most low-slope re-roofs in Climate Zones 8 and 9. The building code generally requires a full tear-off once a roof already has two layers. Pre-1978 homes call for lead-safe work practices. Old built-up roofs and mastics can contain asbestos that has to be handled under SCAQMD Rule 1403. Switching to heavier tile can trigger a structural review, which matters in an area with active faults. Hillside parts of Monterey Park and Montebello need Class A roofing.
The Local Market: Value, Trust, and Fast Response
A lot of homeowners here are long-time residents on fixed incomes, families in multigenerational households, or landlords with duplexes and backyard units. They want honest advice on whether to repair or replace, clear written numbers, and financing when a full roof isn't in the budget. Door-to-door storm chasers and unlicensed handymen work this area every winter. That's why being bonded and insured, being around since 2005, and putting the scope in writing actually matter here. Warehouse and logistics operators along the I-5 and I-710 have a different priority: fixing leaks without shutting down operations.
Common Roofing Problems We See Across Commerce and the Gateway Cities
Most roof failures around here have a local cause behind them, like a long dry season, an old house, a hidden addition, or freeway grime. Here are the problems we find most often, roughly ordered by how urgent they are, with what causes them and the warning signs to watch for.
First-Storm Roof Leaks and Active Water Intrusion Emergency
This is water actively coming into the home or building during heavy rain. It usually comes through failed flashing, a cracked pipe boot, a worn valley, or a low spot where water ponds. Once it's inside, it soaks drywall and insulation, and electrical fixtures can get wet.
Why it's common hereWith seven or eight rain-free months, small defects don't get tested. Sealant dries out, flashing pulls loose as the roof heats and cools, and gutters fill with leaves and soot. Then an atmospheric river drops two or three inches in 48 hours and everything fails at the same time. That's why emergency calls across Commerce, Bell Gardens, and South Gate pile up between November and March, and why roofers who wait until the first storm usually end up booked solid.
Signs you'll notice- Dripping or brown water stains on ceilings during or after rain
- Bubbling paint or soft drywall near exterior walls
- Musty smell in the attic after a storm
- Water around light fixtures or ceiling fans
- Overflowing gutters or downspouts that don't drain
- Damp insulation visible through the attic hatch
We see this most often on postwar ranches in Rosewood Park and Bristow Park with shallow pitches, on Huntington Park homes near Pacific Boulevard where several roof layers have aged together, and on flat-roof warehouses in Vernon whose drains are clogged with rail-yard particulates.
Our fix: We tarp right away to stop more water from getting in, document the damage for insurance, then trace the leak back to its source and make a permanent flashing, boot, or membrane repair once it's dry.
Wind-Lifted Shingles and Torn Ridge Caps Serious
High winds can break the seal strips on asphalt shingles, fold them back, or tear them off completely. Ridge and hip caps are especially vulnerable. Once they're gone, the underlayment and nail holes are open to rain and UV.
Why it's common hereSanta Ana winds blow through the basin in fall and winter, often right before or during rain season. Years of heat bake the adhesive strips on shingles until they're brittle and lose their grip. Older 3-tab shingles common on 1950s–60s tracts in Pico Rivera and Downey are lighter and less wind-resistant than modern architectural shingles. Roofs that were layered over, instead of torn off, often have nails that never reached solid decking, so the shingles pull up easily.
Signs you'll notice- Shingles or ridge caps lying in the yard or driveway
- Visible lines of lifted or creased shingle tabs
- Exposed black underlayment or bare wood
- Nail heads backing out through shingles
- Granules piled at downspout outlets
- Missing pieces along hips and edges
Common on west-facing slopes in the Smith Park area of Pico Rivera, on hillier lots in Monterey Park and Montebello, and on older layered roofs in Bell Gardens along the Florence Ave corridor.
Our fix: We replace the damaged shingles and ridge caps with matched material, hand-seal the tabs, re-nail where the fasteners have failed, and check the decking underneath for moisture.
Ponding and Failing Flat Roofs on Additions Serious
Ponding means water that's still sitting on a low-slope roof 48 hours after rain. It breaks down tar-and-gravel, rolled roofing, and modified bitumen. Over time it leads to blisters, open seams, and rotted decking underneath.
Why it's common hereSo many homes here have rear additions, garage conversions, or backyard units that were built without permits and framed with almost no slope. A lot of them still have rolled roofing or built-up tar-and-gravel that has been drying out in the sun for decades. Where the addition meets the main roof, the flashing tie-in is often just a bead of mastic. Heavy winter rain overwhelms these sections first.
Signs you'll notice- Standing water or dried silt rings on the flat section
- Blistered, alligatored, or cracked surface
- Leaks along the wall where addition meets house
- Gravel washed into gutters
- Soft or spongy spots when walked on
- Interior stains in back bedrooms or converted garages
Extremely common in Florence-Firestone, Walnut Park, Cudahy, Maywood, and the Bandini neighborhood of Commerce, where dense lots led to rear additions. Duplexes and rental ADUs make up a large share of these calls.
Our fix: We fix low spots by tapering or re-sloping, rebuild the tie-in flashing, and install a new TPO, modified bitumen, or coated system that meets Title 24 cool-roof requirements.
Heat and UV Shingle Deterioration Moderate
Shingles age early from sun and heat. They lose granules, curl, crack, and turn brittle well before the end of their rated lifespan, and they protect the home less and less as that happens.
Why it's common hereCommerce sits inland of the marine layer, so summer highs in the 90s and fall heat waves over 100°F are normal. Dark asphalt shingles can get much hotter than the air, and UV is strong all year. Poor attic ventilation, which is common in 1940s–60s homes, traps that heat under the decking and cooks the shingles from below as well. A roof rated for 25 years might only give you 15 to 18 good years here.
Signs you'll notice- Bald patches where granules have worn away
- Curling or cupped shingle edges
- Cracks across shingle tabs
- Heavy granule buildup in gutters
- Attic temperatures well above outdoor air
- Rising summer AC bills
Most noticeable on south- and west-facing slopes of postwar ranch homes in Commerce's Ayers / Veterans Park area, South Gate near Tweedy Blvd, Paramount, and Lynwood, where shallow pitches take direct afternoon sun.
Our fix: Depending on what's left of the roof's life, we either repair isolated sections or recommend replacing it with cool-rated architectural shingles and balanced attic ventilation.
Cracked, Slipped, or Underlayment-Failed Tile Roofs Moderate
Clay and concrete tile can last a very long time, but the felt underlayment beneath it usually gives out after 20 to 30 years. Cracked or slipped tiles let water through to that worn layer, and that's where the leaks start.
Why it's common hereSpanish Colonial Revival homes in East LA's City Terrace and Belvedere Gardens, and concrete-tile homes from the 1950s–70s in Monterey Park and Alhambra, often still have their original underlayment. Seismic movement from the Puente Hills and Whittier fault systems shifts tiles out of place. Untrained workers walking on the roof to service AC units or dishes crack tiles all the time.
Signs you'll notice- Broken or displaced tiles visible from the ground
- Tiles slid down and overlapping gutters
- Leaks that appear without visible roof damage
- Brittle, torn felt visible at eaves
- Debris and soot dams behind tiles
- Stains near valleys or chimneys
Concentrated in Monterey Park's Monterey Hills and Garvey Ave corridor, Alhambra's older neighborhoods, Montebello Park, and Spanish-style homes in Huntington Park and East LA.
Our fix: For a tile reset, we carefully remove and stack the tiles, install new underlayment and flashing, replace any broken pieces, and then re-lay the original tiles.
Rotted Fascia, Eaves, and Skip Sheathing Moderate
This is wood rot along the roof edges, plus old spaced-board decking left over from wood-shake roofs. Neither one gives new roofing a solid surface to fasten to, and they have to be fixed before a new roof goes on.
Why it's common hereLots of 1920s–1950s homes in Bell, Maywood, and Huntington Park originally had wood shakes nailed over skip sheathing. When those roofs were replaced, shingles were often laid right over the gaps. Gutters overflowing in winter storms soak the fascia over and over, and the summer heat dries it out again. After a few decades of that, the wood rots and the eaves sag.
Signs you'll notice- Peeling paint and soft wood along fascia boards
- Sagging or wavy roof edges
- Gutters pulling away from the house
- Visible gaps between attic deck boards
- Daylight through roof boards in the attic
- Birds or pests nesting in eaves
We find this on most tear-offs of pre-1950 homes in Bell, Walnut Park, Florence-Graham, and Huntington Park, and on many wood-sided bungalows near Downtown Downey.
Our fix: We replace the rotted fascia and rafter tails, re-sheathe skip-board decks with plywood, and pass the sheathing inspection before the new roof goes on.
Clogged Drains, Gutters, and Commercial Scuppers Minor
This is debris, soot, and industrial particulates blocking gutters, downspouts, roof drains, and scuppers. It's a minor fix, but it turns into a serious leak or structural load problem if nobody clears it before the rain starts.
Why it's common hereThe I-5, I-710, and rail-yard corridors put out a constant stream of diesel soot and freight dust. Fall wildfire ash adds to it. All of that settles on roofs during the dry months and gets washed into drains by the first rain. Parapet-walled warehouses in Commerce and Vernon depend completely on their drains, and if those clog, water builds up behind the parapets fast.
Signs you'll notice- Black grime streaks down walls and downspouts
- Gutters overflowing during light rain
- Standing water behind parapet walls
- Plants or debris growing in gutters
- Stained ceiling tiles near roof drains
- Dirty, darkened roof surface reducing reflectivity
Worst in the Vernon industrial district, along Commerce's rail corridors near Bandini, and on homes backing onto the I-710 in Bell Gardens and South Gate.
Our fix: We clean gutters, drains, and scuppers before the season, add strainers, and set up maintenance schedules for commercial roofs so drainage keeps working through the winter.
Roofing Services for Homes and Businesses in Commerce, CA
We work on shingle, metal, TPO, EPDM, tile, slate, flat, and coated roof systems for homeowners, landlords, and commercial property owners. We'll give you an honest recommendation, which sometimes means a targeted repair and sometimes means replacement. Either way, the work is done to meet local code and Title 24 requirements.
Roof Repair, Leak Repair, Patching & Damage Repair ⭐ Specialty
We find out where the water is actually getting in, which is often not directly above the ceiling stain. Then we make a permanent fix to flashing, boots, valleys, shingles, tile, or membrane. We also handle roof patching and general damage repair from age, foot traffic, or debris.
Our approachWe start with an attic inspection, trace the water path, and use moisture checks and controlled water testing when needed. Then we use matched materials, proper fasteners, and new flashing instead of a smear of tar.
In Commerce, CAAround here, most leaks start where patio covers or rear additions tie into the main roof, or at dried-out flashing on postwar homes in Commerce, Bell Gardens, and Pico Rivera. Fixing those spots before November saves a lot of emergency calls.
Best for: Homeowners and landlords with a specific leak, stain, or damaged area on a roof that still has useful life left.
Emergency Roofing Services & Emergency Roof Tarping ⭐ Specialty
When a storm or an accident opens up your roof, we get it covered fast. We secure tarps, stop water from getting in, and document the damage so you can file an insurance claim.
Our approachWe use heavy-duty tarps fastened and weighted so they don't add new damage. We take photos and notes for your adjuster, then schedule the permanent repair as soon as the weather allows.
In Commerce, CAAtmospheric-river storms between November and March create waves of emergency calls across the Gateway Cities. Having a local crew in Commerce matters most then, when out-of-area roofers are booked and storm chasers are knocking on doors.
Best for: Active leaks, wind-torn roof sections, fallen-tree damage, and anyone who needs damage documented for an insurance claim.
Roof Repair for Storm and Wind Damage
We repair damage from Santa Ana winds and winter storms. That includes lifted or missing shingles, torn ridge caps, displaced tiles, damaged flashing, and torn flat-roof membranes.
Our approachWe inspect the whole roof, not just the obvious spots. We replace and hand-seal shingles, reset tiles, re-nail weak fastening, and check the decking for water damage.
In Commerce, CAWind damage clusters on older 3-tab and layered roofs in Pico Rivera, Downey, and Bell Gardens, where baked adhesive strips and short nails don't hold up to Santa Ana gusts.
Best for: Homes and buildings with visible wind or storm damage, or owners documenting a claim after a weather event.
Roof Replacement & Roof Installation
We do full tear-off and replacement on worn-out roofs, plus new roof installation on additions and new construction. That covers permits, inspections, decking repair, underlayment, flashing, ventilation, and final cleanup.
Our approachWe tear off down to the deck, replace rotted or skip sheathing with plywood, pass the sheathing and nailing inspection, and install a complete system with new drip edge, flashing, and vents.
In Commerce, CAMany homes in Bell, Huntington Park, and South Gate already have two layers, so code requires a tear-off. We plan for skip-sheathing replacement and tight-lot dumpster placement from the start.
Best for: Roofs past their service life, roofs with multiple layers, or homes with recurring leaks across several areas.
Asphalt, Architectural, 3-Tab & Composite Roof Shingles
We install and repair asphalt shingle roofs, including architectural (dimensional) shingles, budget-friendly 3-tab shingles, and composite roof shingles, with cool-rated options that reflect more of the sun.
Our approachWe follow the manufacturer's installation specs, including proper nailing patterns, starter strips, ice-and-water or synthetic underlayment at valleys, and balanced ventilation so the shingles don't cook from below.
In Commerce, CAArchitectural and cool-rated shingles are the most common choice for postwar stucco ranches in Commerce, Downey, Paramount, and Lynwood. They hold up better against heat, UV, and Santa Ana winds than older 3-tab roofs do.
Best for: Steep-slope residential roofs where owners want good value, a wide range of colors, and solid wind and heat performance.
Roof Tiling & Slate Roofing
We install clay and concrete tile roofs, do tile resets with new underlayment, replace individual tiles, and repair and install slate roofs.
Our approachWe remove and stack tiles carefully, install new underlayment and flashing, fasten to current code, and match replacement tiles. Before switching any home to heavier tile, we check the structure.
In Commerce, CASpanish Colonial homes in East LA and Huntington Park and concrete-tile homes in Monterey Park and Alhambra usually need a reset, not new tile. Because of the area's seismic risk, structural review matters when adding weight.
Best for: Owners of tile or slate homes with leaks, worn underlayment, or broken pieces who want to keep their original look.
Metal, Standing Seam, Steel & Corrugated Metal Roofing
We install and repair standing seam metal, steel panel, and corrugated metal roofs on homes, outbuildings, patio covers, and commercial buildings.
Our approachWe use concealed-fastener standing seam or exposed-fastener corrugated panels, depending on the use. Every install gets proper underlayment, trim, and flashing, plus fastening details that allow for thermal expansion.
In Commerce, CAMetal holds up very well against Commerce heat and UV, and reflective finishes can meet cool-roof goals. It's lightweight, which helps on seismic retrofits, and it's common on warehouses and patio covers.
Best for: Owners who want a long-lasting, low-maintenance, fire-resistant roof, plus commercial and accessory structures.
Flat Roofing: TPO, EPDM Rubber & Modified Bitumen
We replace and repair flat and low-slope roofs on additions, garages, duplexes, and commercial buildings using TPO, EPDM rubber, and modified bitumen systems.
Our approachWe tear off old built-up roofing, handling any asbestos-containing material properly. We correct slope with tapered insulation or crickets and install heat-welded TPO or fully adhered EPDM with proper edge and wall flashing.
In Commerce, CARear additions in Florence-Firestone, Cudahy, and Maywood often have aging tar-and-gravel that ponds. Title 24 requires CRRC-rated cool roofing on most low-slope re-roofs here, and white TPO meets that requirement.
Best for: Flat or low-slope sections that pond, blister, or leak at the wall tie-in.
Commercial Roofing
We handle roofing for warehouses, distribution centers, cold storage, retail, and manufacturing buildings. That includes repairs, replacements, coatings, drainage, skylights, and maintenance programs.
Our approachWe schedule work to keep your business running, follow Cal/OSHA fall-protection rules, flash around rooftop HVAC units, deal with parapet walls and drains, and keep fire-department access clear.
In Commerce, CAThe Vernon industrial district and the rail and freeway corridors through Commerce, South Gate, and Pico Rivera have huge flat roofs whose drains get clogged with particulates. Keeping the drainage working is just as important as the membrane.
Best for: Property managers, logistics operators, and manufacturers who need leak response and planned roof management.
Roof Coating & Roof Restoration
We restore aging flat and metal roofs with silicone or elastomeric coatings. It extends their service life and makes the surface reflective, without the cost of a full tear-off.
Our approachWe clean, repair seams and blisters, prime, and apply the coating at the manufacturer's specified thickness. Before recommending a coating, we confirm the substrate is dry and sound.
In Commerce, CACoatings reflect the intense Commerce sun, lower building heat, and can help with cool-roof goals. They're a popular, budget-friendly option for warehouses and residential flat sections that are worn but still structurally sound.
Best for: Structurally sound flat or metal roofs showing surface wear, and owners who want lower cooling costs.
Roof Inspection, Maintenance & Estimates
We provide detailed roof inspections, seasonal maintenance, and free written roof estimates and quotes, so you know your roof's condition and your options before you spend anything.
Our approachWe look at the roof surface, flashing, attic, ventilation, and drainage, take photos, and give you a written scope with prioritized repair and replacement options.
In Commerce, CAThe best time to inspect is September or October, before the first storm and after the summer heat has done its damage. Landlords with Bell Gardens or Huntington Park rentals use inspections to plan their budgets.
Best for: Home buyers, landlords, owners of aging roofs, and anyone who wants to get ahead of winter.
Attic Venting Installation & Repairs
We install and repair attic ventilation, including ridge vents, soffit vents, and roof vents, to lower attic heat, protect shingles, and reduce air-conditioning load.
Our approachWe calculate how much intake and exhaust the attic needs, clear blocked soffits, replace damaged vents, and seal every penetration properly so it can't leak.
In Commerce, CAMany 1940s–60s homes in Commerce, Paramount, and Lynwood have little or no intake ventilation, so attics get extremely hot during 100°F heat waves. Balanced venting helps shingles last longer and keeps AC bills down.
Best for: Homes with hot upstairs rooms, high summer energy bills, or shingles aging too early.
Skylight Installation, Repair & Skylight Leak Repair
We install new skylights, replace failed units, and fix skylight leaks on both residential and commercial roofs.
Our approachWe use proper curb construction, manufacturer flashing kits, and correct integration with the roof membrane or shingles, and we replace cracked or hazy lenses.
In Commerce, CAOlder skylights on warehouses in Commerce and Vernon, and on remodeled homes in Downey and Montebello, often leak where the flashing around them has dried out from years of heat.
Best for: Owners who want more natural light, or who have a skylight leaking, fogging, or cracking.
Chimney Flashing
We repair and replace chimney flashing, step flashing, and counter-flashing so water stops getting in where the chimney meets the roof.
Our approachWe cut counter-flashing into the masonry joints, install step flashing with each shingle course, and add a cricket behind wider chimneys so water doesn't pool there.
In Commerce, CABrick chimneys on 1920s–40s bungalows in Bell, Maywood, and Downtown Downey often have flashing that's just tarred-over metal, and it cracks with daily heat cycles.
Best for: Homes with stains or leaks near the chimney, or with flashing that's covered in tar.
Residential Roofing & General Roofing Service
We handle complete roofing service for single-family homes, duplexes, small multifamily buildings, and backyard units, from small repairs to full replacements.
Our approachWe schedule around tenants, protect landscaping and tight driveways, clean up with magnetic nail sweeps, and explain every option in plain language.
In Commerce, CADense lots, alley access, and street-parking limits in Huntington Park, Cudahy, and East LA call for careful planning of material deliveries and dumpster placement.
Best for: Homeowners, heirs updating family homes, and landlords managing rental properties.
Dependable Gutter Services in Commerce, CA
In Commerce, gutters fill up slowly and then fail all at once. For months of dry weather, diesel soot from the I-5 and I-710 corridors, industrial dust, leaves, and fall wildfire ash settle into gutters and downspouts. Then the first November storm or an atmospheric river arrives, like the ones in early 2023 and February 2024. Several inches of rain fall in a few days, and blocked gutters spill onto fascia, stucco walls, patios, and foundations. Commerce Roofing Company handles gutter cleaning, repair, and replacement as part of keeping your whole roof draining. Before we hang new gutters, we check the pitch, clear the downspouts, and make sure the fascia behind them is solid. On warehouses and low-slope additions, we clear scuppers and roof drains that freight-corridor grime tends to block. We work on roofs first, so we also check how water leaves the roof edge. Book before the rainy season and call for a free estimate.
- Gutter and downspout cleaning to remove soot, debris, and wildfire ash before the November–March rains
- Gutter repair, re-pitching, and replacement to stop overflow during heavy atmospheric-river storms
- Checks for dry-rotted fascia and eaves before new gutters go up, common on 1920s–1960s Gateway Cities homes
- Scupper and roof-drain clearing for flat and low-slope commercial roofs in Commerce and Vernon
- Drip edge and patio-cover tie-in checks so roof runoff lands in the gutter, not behind it
Trusted Siding Contractor in Commerce, CA
The walls of many homes around Commerce take as much punishment as the roof. Strong year-round UV, summer heat waves above 100°F, and big day-to-night temperature swings crack exterior finishes, open seams, and dry out the trim. In older Craftsman bungalows in Bell, Maywood, and Huntington Park, and in postwar ranch homes across Commerce, Bell Gardens, and Pico Rivera, small gaps often go unnoticed until winter rain gets in behind the siding. Commerce Roofing Company fixes and replaces damaged siding with an eye on where the roof meets the wall. That's where flashing, eaves, and fascia most often let water in. We check for hidden rot, patch or replace failed sections, and seal transitions so the walls and roof shed water together. Many local homes were built before 1978, so we plan siding work around the lead-safe practices California requires for those homes. Call Commerce Roofing Company for a free siding estimate.
- Siding repair and replacement on bungalows, Craftsman cottages, and postwar stucco ranch homes
- Inspection for hidden rot and moisture behind cracked or loose siding before rainy season
- Roof-to-wall flashing and trim fixes where water most often gets in
- Sealing seams and transitions worn down by heat, UV, and big daily temperature swings
- Work on pre-1978 homes planned around California's lead-safe work requirements
Expert Skylight Contractor in Commerce, CA
Skylights bring daylight into Commerce homes and warehouses. They also put a hole in the roof, and that hole has to stay sealed through hot summers and sudden winter storms. Day-to-night temperature swings make skylight flashing and sealant expand and contract over and over. Strong UV clouds and cracks older plastic domes. Months of dry weather hide failing seals until the first heavy rain sends water into a living room or onto warehouse inventory. Commerce Roofing Company repairs, re-flashes, and replaces skylights on residential and commercial roofs. Because we install the roofing around them, we treat each skylight as part of the roof system. On re-roofs, we look at re-flashing or replacing old skylights while the roof is open. That way, an old unit doesn't become the weak spot on a new roof. On flat commercial roofs in Commerce and Vernon, we also look at curb condition and drainage around each opening. Call now for a free skylight estimate.
- Skylight leak repair, including re-flashing and resealing curbs worn out by heat and temperature swings
- Replacement of UV-damaged, cracked, or cloudy skylight domes and units
- Skylight work coordinated with shingle, tile, TPO, and modified-bitumen re-roofs
- Curb and drainage checks around skylights on large flat warehouse and distribution roofs
- Pre-season skylight checks so failed seals are found before the November–March rains
Professional Waterproofing Company in Commerce, CA
Most leaks in Commerce start where water sits or where two surfaces meet. Rear additions, converted garages, and backyard units often have low-slope roofs that pond after a big storm. Parapet walls, rooftop HVAC curbs, and badly attached patio covers give water easy ways in. Older tar-and-gravel and rolled roofing dries out under the Southern California sun. Commerce Roofing Company provides waterproofing for homes and commercial buildings, matched to each surface. Options include silicone and elastomeric roof coatings, flashing and seam repair, and fixes for ponding areas on flat sections. Many coatings can also help low-slope roofs meet the cool-roof reflectance standards in California's Title 24 energy code. Before we disturb old built-up roofs or mastics, we factor in testing, since older materials may contain asbestos regulated by South Coast AQMD. Get ahead of the next atmospheric river and call for a free estimate.
- Silicone and elastomeric coatings for flat and low-slope residential and commercial roofs
- Fixes for ponding on rear additions, converted garages, and backyard units
- Parapet wall, HVAC curb, and patio-cover tie-in waterproofing
- Flashing and seam repair worn down by heat, UV, and daily expansion and contraction
- Coating options that can help meet Title 24 cool-roof reflectance requirements
Energy-Smart Window Installation Service in Commerce, CA
Many homes in Commerce and the nearby Gateway Cities were built between the 1920s and 1960s. Lots of them still have old windows that let in heat during September and October heat waves and leak when winter storms push rain against the walls. Homes near the I-5, I-710, and rail-yard corridors also deal with freight noise and dust coming through worn frames. Commerce Roofing Company installs replacement windows with the same focus on keeping water out that guides our roofing work. A window is only as good as the flashing and seal around it. That matters most in stucco walls, where a poor install can send water behind the finish. We measure carefully, prepare the opening, check for hidden rot, and seal and flash each unit so it works with the walls and roof above it. For pre-1978 homes, we plan the work around California's lead-safe requirements. Call Commerce Roofing Company for a free window estimate.
- Replacement window installation for 1920s–1960s bungalows, ranch homes, and Spanish Colonial Revival homes
- Careful flashing and sealing at stucco openings to keep wind-driven winter rain out
- Upgraded windows that help reduce heat gain during inland heat waves above 100°F
- Better-sealed frames to cut dust and freight-corridor noise near the I-5 and I-710
- Rot checks around openings and work on pre-1978 homes planned around lead-safe requirements
How Our Roofing Process Works
Here's what happens from your first call to the final cleanup, in order. You'll get a written scope before any work starts and updates as the job moves along. If we find something we didn't expect once the old roof is off, we tell you before we do anything about it.
Call or Request Your Free Estimate
- We ask about leaks, roof age, and any recent storms
- We schedule a convenient inspection time, including for tenant-occupied units
- If water is coming in, we dispatch emergency tarping
Local note: Between November and March, call as soon as you notice a stain. Storm weeks fill up fast across the Gateway Cities.
Roof and Attic Inspection
- We check the surface, flashing, valleys, vents, and drainage
- We inspect the attic for moisture, ventilation, and sheathing condition
- We take photos to show you what we found
- We note the number of layers, any additions, and possible asbestos or lead concerns
Local note: On pre-1978 homes and old built-up roofs, we flag lead-safe and SCAQMD Rule 1403 requirements early so they don't surprise you later.
Written Estimate and Options
- We give you an itemized written scope with repair and replacement options
- We explain material choices and Title 24 cool-roof requirements
- We talk through financing if it helps
Local note: We tell you up front about likely extras, like skip-sheathing replacement on homes that used to have shake roofs.
Permits, Scheduling, and Installation
- We pull the permit through County Building and Safety, your city, or LADBS
- We plan delivery and dumpster placement for tight lots and alleys
- We tear off, repair the decking, and pass any required sheathing inspection
- We install underlayment, flashing, ventilation, and roofing
Local note: We do as much work as possible in the dry months and protect open roof areas if the forecast changes.
Final Inspection, Cleanup, and Walkthrough
- We clean the site and run magnetic nail sweeps
- We get the final permit inspection signed off
- We walk you through the finished work and give you your documentation
Local note: You'll keep the permit records and photos. They help with insurance claims and when you sell the property.
Why Commerce Property Owners Choose Commerce Roofing Company
We've Been Local Since 2005
Commerce Roofing Company opened its doors on February 18, 2005, and we've been working on Gateway Cities roofs ever since. That's two decades of storm seasons, heat waves, and Santa Ana wind events. We know what's usually under the shingles on a 1925 Bell bungalow, how a 1955 Pico Rivera ranch tends to fail, and where Vernon warehouses collect water. You can't learn that from a few storm-season visits. When you call us, you're getting a contractor who will still be around next winter.
Bonded and Insured, With Proof Available
Unlicensed handymen and door-to-door storm chasers show up in Southeast LA every rainy season. We're bonded and insured, and we're glad to show you the paperwork before you sign anything. Whoever you hire, we encourage you to look up their license on the CSLB website and ask for current insurance certificates. If an uninsured worker gets hurt on your roof or damages your property, you could end up paying for it. A bonded, insured contractor keeps that risk off you.
Code-Compliant Work, Not Shortcuts
Permits, Title 24 cool-roof rules, two-layer tear-off requirements, lead-safe practices on pre-1978 homes, and SCAQMD Rule 1403 for old built-up roofs all add cost. That's exactly why some operators skip them. We pull the right permit from County Building and Safety, your city, or LADBS, and we build to pass inspection. Skipping a permit can come back to bite you when you sell, file an insurance claim, or have to get an addition legalized later.
Every Roof Type This Area Has
We handle every roof type you'll find on a single block in Huntington Park or across a business park in Commerce. That means architectural and 3-tab shingles, clay and concrete tile, slate, standing seam and corrugated metal, TPO, EPDM, modified bitumen, and silicone or elastomeric coatings. Because we work with all of them, we recommend what fits your building and budget, not just the one material we happen to install. It also means mixed roofs, like a tile main house with a flat rear addition, get handled by one crew.
Honest Repair-vs-Replace Advice
Plenty of roofs around here have a few more good years left after a solid repair. If yours does, we'll tell you. If it's on its third layer with soft decking, we'll tell you that too, and show you photos. Many of our customers are long-time owners on fixed incomes or landlords watching cash flow, so we lay out the options side by side in a written estimate. You decide what makes sense.
Emergency Response When the Storms Hit
When an atmospheric river hits and water's coming through your ceiling, you need someone close by. We offer emergency roofing and roof tarping across our 20-mile service area to stop the damage fast. We document everything with photos for your insurance company, then come back to make the permanent repair once the weather clears. Commercial clients get leak response planned around keeping their operations running.
Financing That Makes a New Roof Possible
A roof replacement is a big expense, and it often comes up at the worst time. We offer financing so you can fix the problem now and not wait while a leak rots your decking. Combine that with a clear written estimate and you'll know exactly what you're paying for and how you'll pay for it, with no surprises halfway through the job.
A Roofing Contractor Commerce Has Relied On Since 2005
Since February 2005, homeowners, landlords, and businesses across Commerce and the Gateway Cities have trusted us with leaks, storm damage, re-roofs, and commercial flat roofs. Most of our work comes from neighbors recommending us to neighbors, and we earn that with honest estimates and solid workmanship.
Bonded • Insured • Financing available
Roofing Service Areas Around Commerce, CA
We're based in Commerce and serve homes and businesses within about 20 miles. That covers the Gateway Cities, East LA, the San Gabriel Valley edge, and South LA. Every city on this list has its own building stock and permit office, and we've worked with all of them.
Commerce and the Industrial Core
Gateway Cities South and East
Southeast LA and Hub Cities
Not sure if we cover your area? Call (323) 677-0939.
How Much Does a Roof Cost in Commerce, CA?
Roofing costs in Commerce and the Gateway Cities depend a lot on what's under the current roof, which material you choose, and which code requirements apply to your project. These ranges are typical for the area. Your free written estimate will give you your actual number.
Roof Size, Pitch, and Material Primary Factor
Roofs are priced per square, which is 100 square feet. Architectural asphalt shingles are the most economical full system. Tile resets, standing seam metal, and slate cost noticeably more for labor and materials. A typical 1,200–1,600 sq ft postwar ranch in Commerce or Bell Gardens needs about 16–22 squares once you count overhangs. Steeper or more cut-up roofs, like Spanish-style homes with lots of hips, add labor time.
Tear-Off Layers and Decking Condition Primary Factor
If your home already has two layers, code requires a full tear-off, and each extra layer adds labor and dump fees. Older homes in Bell, Maywood, and Huntington Park often have skip sheathing under former shake roofs, which means re-sheathing with plywood. Rotted decking, fascia, or rafter tails get priced per sheet or per linear foot. This is usually the biggest variable on 70–100-year-old homes.
Code and Compliance Requirements Secondary Factor
Permits, Title 24 cool-roof products on low-slope sections, and required sheathing inspections all go into the price. On pre-1978 homes, lead-safe practices add some labor. If testing turns up asbestos in an old built-up roof or mastic, SCAQMD Rule 1403 abatement adds a separate line item. A properly priced, compliant bid will look higher than a handyman's quote that skips all of this.
Flat Sections, Additions, and Drainage Secondary Factor
Many local homes have a flat rear addition or garage conversion on top of the main sloped roof. Fixing ponding with tapered insulation or crickets, rebuilding the tie-in flashing, and installing TPO or modified bitumen adds to the total. Patio covers tied in badly to the main roof may need to be reworked too. Commercial roofs add drains, scuppers, parapets, and HVAC curbs to the cost.
Access, Ventilation, and Extras Additional Factor
Tight driveways, alley-only access, and street-parking limits can affect dumpster and delivery costs. Upgrades like balanced attic ventilation, new skylights, chimney flashing, and cool-rated shingles add some cost up front but pay off in shingle life and summer energy bills.
| Typical project | Details | Estimated range |
|---|---|---|
| Leak repair at patio cover or flashing tie-in | Single-story stucco home in Commerce or Pico Rivera; reflash junction, replace damaged shingles, seal penetrations | $450 – $1,800 |
| Flat-roof replacement on a rear addition | 300–500 sq ft low-slope addition in Florence-Firestone or Cudahy; tear-off of tar-and-gravel, re-slope, cool-rated TPO | $3,500 – $8,500 |
| Full shingle re-roof on a postwar ranch | 1,400 sq ft home in Bell Gardens or South Gate; two-layer tear-off, partial re-sheathing, architectural shingles, new vents and flashing | $11,000 – $20,000 |
| Concrete or clay tile reset | 1,800 sq ft tile home in Monterey Park or East LA; lift and stack tile, new underlayment and flashing, replace broken tiles | $16,000 – $32,000 |
We offer financing, so a needed roof replacement or major repair doesn't have to wait until you've saved the full amount. Ask about options when you schedule your free estimate. A properly permitted roof built for this climate protects your home's structure, cuts summer cooling costs with cool-rated materials and good ventilation, and keeps your insurance and resale records clean. Paying a little more for code-compliant work usually costs less than redoing a cheap job later.
Recent roofing Projects in Commerce, CA
Roofing FAQs for Commerce and Southeast LA
How much does a new roof cost in Commerce, CA?
For a typical 1,200–1,600 sq ft single-story home in Commerce, Bell Gardens, or South Gate, a full architectural shingle replacement usually runs about $11,000 to $20,000. Tile resets and metal roofs cost more. The biggest variable is what we find under the current roof. Multiple layers, skip sheathing from an old shake roof, or rotted decking all add cost, and they're common on 70–100-year-old homes. A flat rear addition usually adds a few thousand dollars on its own. We give you a free written estimate, and financing is available if it helps.
How long does a roof replacement take?
Once the permit is issued, most residential re-roofs here take one to four working days. Small repairs are often done in a single visit. Tile resets and larger homes take longer, and commercial roofs are scheduled in phases to keep operations running. Permit timing depends on whether your property is handled by LA County Building and Safety, your own city's building department, or LADBS. Sheathing inspections can add a short pause mid-job. If you can, schedule replacements between April and October, when there's almost no chance of rain.
Do I need a permit to replace my roof in Commerce?
Yes. Re-roofs need a permit. Commerce, East LA, Florence-Graham, Walnut Park, and East Compton are handled through LA County Building and Safety. Cities like Downey, South Gate, Huntington Park, Montebello, Monterey Park, and Alhambra have their own departments, and the City of LA uses LADBS. Re-roofs usually require inspections, sometimes including a sheathing or nailing check before the new roof goes on. Low-slope re-roofs generally have to meet Title 24 cool-roof standards. We pull the permit for you, which protects you when you sell or file an insurance claim.
Can you put new shingles over my old roof?
Sometimes, but it's usually not a good idea around here, and often it isn't allowed. The building code generally requires a tear-off once a roof already has two layers, and lots of older homes in Bell, Huntington Park, and Maywood are already there. Even with a single layer, overlaying hides rotted decking and skip sheathing, traps heat that shortens shingle life, and keeps nails from reaching solid wood, which hurts wind resistance. A tear-off lets us inspect and fix the decking. That's the only way to know the new roof is going on something solid.
When should I get my roof inspected or repaired?
The best time is September or October, after the summer heat has done its damage and before the November–March rains. Since we go seven or eight months without real rain, small problems stay hidden until a storm finds them. Call right away if you see ceiling stains, granules piling up in gutters, lifted or missing shingles after Santa Ana winds, or standing water on a flat section. If water is actively coming in, call for emergency tarping. Waiting even one storm can turn a $600 flashing repair into a ceiling, insulation, and decking job.
How can I prevent roof leaks before the rainy season?
Start with drainage. Clear gutters, downspouts, and flat-roof drains, especially if you live near the I-710, I-5, or the rail yards, where soot builds up fast. Have the flashing checked at chimneys, skylights, pipe boots, and especially where patio covers or rear additions meet the main roof, since that's where most local leaks start. Replace cracked tiles and lifted shingles. Make sure your attic has balanced ventilation to reduce heat damage. Commercial owners should schedule drain and scupper cleaning plus a membrane check every fall. A yearly maintenance visit costs far less than storm-season emergency work.
Should I repair or replace my roof?
If the roof is under about 15 years old and the damage is localized, like a flashing failure, a few blown-off shingles, or one leaking skylight, repair usually makes sense. Replacement is the better call when you see widespread granule loss or curling, leaks in several spots, soft decking, two or more layers, or old tar-and-gravel that has dried out. Commerce's heat and UV mean many shingle roofs wear out earlier than their rated life. We'll show you photos and give you both options in writing, so you can weigh the cost against how long you plan to stay.
What's the best roofing material for the Commerce climate?
For most sloped homes, cool-rated architectural asphalt shingles give the best balance of cost, wind resistance, and heat performance. Standing seam metal lasts longer and reflects heat very well. Clay and concrete tile work beautifully on Spanish-style homes, but switching to tile from a lighter material may require a structural review because of the area's seismic activity. On flat and low-slope sections, white TPO or a silicone coating handles the strong UV and meets Title 24 cool-roof rules. Good attic ventilation helps with any of these.
Serving Commerce, CA & Nearby
Get Your Roof Ready Before the Next Storm
Don't wait for the first atmospheric river to find out your roof has a problem. Schedule a free inspection now, while it's dry, and get a clear written plan from a Commerce roofer who's been here since 2005.
- ✓Free roof inspection and written estimate
- ✓Bonded and insured roofing contractor since 2005
- ✓Honest repair-vs-replacement recommendations with photos
- ✓Permits pulled and code-compliant work, including Title 24 cool roofs
- ✓Shingle, tile, metal, slate, TPO, EPDM, and coating expertise
- ✓Financing available
- ✓Emergency roofing and roof tarping when storms hit
⚡ Water coming through the ceiling right now? Call us for emergency roof tarping to stop the damage and document it for your insurance claim.
Bonded • Insured