Southern California
Commercial Roof Inspection and Maintenance in Los Angeles County
Los Angeles County holds the largest concentration of flat commercial roofs in the state, from the rail-served warehouses of Vernon and Commerce to the aerospace campuses of El Segundo and the studio lots of Burbank. We scan, score and maintain those roofs on a fixed schedule so owners can plan capital spending instead of reacting to leaks.
What kinds of commercial buildings are in Los Angeles County?
Los Angeles County is dominated by tilt-up warehouses, older bow-truss manufacturing buildings, neighborhood retail centers and mid-rise offices, almost all with flat or low-slope roofs.
The Central Industrial belt running from Vernon through Commerce, Santa Fe Springs and City of Industry carries millions of square feet of distribution space built between the 1960s and the 2000s.
The South Bay adds aerospace and refinery-adjacent buildings around El Segundo, Torrance and Carson, while the San Fernando Valley mixes light manufacturing in Sun Valley, Pacoima and Chatsworth with studio and media buildings in Burbank and Glendale. The San Gabriel Valley carries a dense layer of 1970s and 1980s industrial parks in El Monte, Irwindale and Azusa, many still on their original built-up roofs.
- Central Industrial belt: Vernon, Commerce, Santa Fe Springs and City of Industry distribution and food processing
- Ports corridor: Wilmington, San Pedro, Carson and Long Beach logistics along the Alameda Corridor
- South Bay aerospace: El Segundo, Hawthorne and Torrance engineering and manufacturing campuses
- San Fernando Valley: Van Nuys, Sun Valley, Pacoima, Chatsworth and Burbank industrial and studio buildings
- San Gabriel Valley: El Monte, Irwindale, Azusa and Baldwin Park industrial parks off the 10 and 210
| Building type | Common roof system | Typical age | What Los Angeles County does to it |
|---|---|---|---|
| Tilt-up distribution warehouse | Single-ply TPO or aged built-up | 15 to 35 years | UV and ponding at interior drains |
| Bow-truss manufacturing building | Built-up or modified bitumen | 40 years or more | Deck deflection and seam splitting |
| Neighborhood retail center | Modified bitumen or TPO | 10 to 30 years | Rooftop HVAC traffic and penetrations |
| Mid-rise office | Modified bitumen or PVC | 15 to 25 years | Equipment curbs and parapet flashing |
| Studio or media building | Spray foam or TPO | 10 to 25 years | Heat load over large clear spans |
What does the Los Angeles County climate do to a flat roof?
The Los Angeles County climate ages a flat roof mainly through ultraviolet exposure and heat, with more than 280 dry days a year in most basins.
Inland valleys such as the San Fernando and San Gabriel regularly pass 100 degrees in summer, which cooks surfacing and shrinks seams, while coastal buildings from Long Beach to Santa Monica take salt air and marine layer moisture that corrodes metal edges and fasteners. The short, intense winter storms then find every open seam and blocked drain at once.
How often should a Los Angeles County commercial roof be inspected?
A Los Angeles County commercial roof should be inspected at least twice a year, once in spring after the rains and once in fall before them.
Warehouses with heavy rooftop equipment, older bow-truss buildings and roofs near the ports or refineries benefit from a quarterly visual check between full scans, because debris and chemical fallout build up faster there. Our commercial roof inspection page explains what each visit covers.
What does a maintenance program cost in Los Angeles County?
A maintenance program for a 120,000 square foot distribution warehouse in Los Angeles County costs $26,400 to $30,000 a year on our Protect program, priced at $0.22 to $0.25 per square foot with a $2,500 minimum.
Most Los Angeles County portfolios fit the Protect program, because the typical building is a mid-life warehouse or retail roof that needs scheduled repairs more than it needs replacement. Owners of newer tilt-ups often start on Monitor, while landlords with several older bow-truss or built-up roofs usually move to Manage for capital planning across the portfolio. Every tier and what it includes is on the maintenance programs and pricing page.
Calculated from our published rates: Monitor $0.12 to $0.15 per square foot a year with a $1,500 annual minimum, Protect $0.22 to $0.25 per square foot a year with a $2,500 annual minimum, Manage $0.40 to $0.45 per square foot a year with a $4,500 annual minimum.
How soon can you scan a roof in Los Angeles County?
We can scan a roof in Los Angeles County as soon as roof access is confirmed after your request, and a 120,000 square foot distribution warehouse takes about 2.5 hours at roughly 50,000 square feet an hour, with the PE-stamped report delivered within 48 hours.
We schedule Los Angeles County scans around dock hours, studio shoots and store openings, and dense industrial districts let us cover several neighboring buildings in one day. Most sites can be scanned within one to two weeks of a request, with the stamped report delivered within 48 hours of the scan. Start with our roof scan request form, or compare every county on the service areas page.
Which Los Angeles County cities do you serve?
We serve all of Los Angeles County, and 58 of its cities have their own page below with the local building stock, climate and permitting.
Roof work in Los Angeles County is permitted by the city where the building sits, or by LA County Public Works for unincorporated areas, and City of Los Angeles neighborhoods such as Van Nuys, Wilmington and San Pedro go through LADBS. Reroofing across the county must meet California Title 24 cool roof requirements, so reflectance targets are part of every replacement plan we price.
- VernonLeonis Boulevard and District Boulevard · Pacific Boulevard and Santa Fe Avenue
- CommerceWashington Boulevard and Garfield Avenue · Telegraph Road along the I-5
- City of IndustryValley Boulevard and the Union Pacific line · Gale Avenue and Azusa Avenue
- Santa Fe SpringsTelegraph Road and Florence Avenue · Norwalk Boulevard and Carmenita Road
- IrwindaleArrow Highway · Irwindale Avenue and Live Oak Avenue
- CerritosCerritos Auto Square · Los Cerritos Center and South Street
- CarsonDominguez Hills industrial area · Alameda Street corridor
- TorranceDel Amo Boulevard and Crenshaw Boulevard · 190th Street corridor
- ComptonAlameda Street and the Alameda Corridor · Artesia Boulevard and the SR-91
- GardenaWestern Avenue and Normandie Avenue · Rosecrans Avenue and Van Ness Avenue
- ParamountGarfield Avenue and Somerset Boulevard · Alondra Boulevard corridor
- DowneyLakewood Boulevard and Firestone Boulevard · Former NASA Industrial Plant site
- NorwalkImperial Highway civic corridor · Firestone Boulevard auto row
- Pico RiveraWashington Boulevard industrial area · Pico Rivera Towne Center
- MontebelloWashington Boulevard and Garfield Avenue · Montebello Town Center
- Monterey ParkAtlantic Boulevard and Garvey Avenue · Corporate Center Drive
- AlhambraMain Street downtown · Fremont Avenue corridor
- San GabrielValley Boulevard plazas · San Gabriel Boulevard
- El MonteFlair Drive business park · El Monte auto row on Santa Anita Avenue
- South El MonteRosemead Boulevard industrial area · Santa Anita Avenue and Merced Avenue
- AzusaGladstone Street and Irwindale Avenue · Foothill Boulevard and Azusa Avenue
- Baldwin ParkArrow Highway and Live Oak Avenue · Kaiser Permanente Baldwin Park Medical Center area
- CovinaDowntown Citrus Avenue · Emanate Health Inter-Community Hospital area
- West CovinaPlaza West Covina · Garvey Avenue South auto row
- WalnutValley Boulevard business parks · Lemon Avenue corridor
- DuarteCity of Hope campus · Huntington Drive corridor
- ArcadiaWestfield Santa Anita · Huntington Drive corridor
- MonroviaHuntington Drive business district · Station Square and the Metro A Line
- PasadenaLake Avenue office corridor · Old Pasadena and Colorado Boulevard
- PomonaMission Boulevard and SR-60 industrial area · Fairplex
- La VerneBrackett Field Airport area · Foothill Boulevard
- San DimasArrow Highway industrial area · Bonita Avenue downtown
- GlendoraRoute 66 corridor · Lone Hill Avenue
- WhittierUptown Whittier on Greenleaf Avenue · Whittier Boulevard corridor
- La MiradaValley View Avenue industrial area · Alondra Boulevard and the I-5
- LakewoodLakewood Center · South Street and Candlewood Street
- BellflowerBellflower Boulevard · Alondra Boulevard
- Long BeachDouglas Park · Westside industrial area
- Signal HillSignal Hill Gateway Center and Town Center · Long Beach Auto Mall on Cherry Avenue
- WilmingtonAlameda Street corridor · Anaheim Street
- San PedroHarbor Boulevard waterfront · Downtown San Pedro on Pacific Avenue and 6th Street
- InglewoodHollywood Park · Century Boulevard near LAX
- HawthorneCrenshaw Boulevard and Rocket Road · Hawthorne Municipal Airport
- El SegundoRosecrans Avenue office corridor · Smoky Hollow
- Redondo BeachNorth Redondo aerospace campus · King Harbor and the pier
- Santa MonicaSanta Monica Airport and Bergamot area · Olympic Boulevard corridor
- Culver CityHayden Tract · Sony Pictures Studios
- LynwoodPlaza Mexico · St. Francis Medical Center area
- South GateFirestone Boulevard industrial area · Azalea shopping center
- Huntington ParkPacific Boulevard shopping district · Alameda Street and Randolph Street edge
- BurbankMedia District on Olive Avenue and Alameda Avenue · Hollywood Burbank Airport area
- GlendaleDowntown Brand Boulevard · Grand Central Business Centre
- Van NuysVan Nuys Airport · Sepulveda Boulevard and Roscoe Boulevard
- Sun ValleySan Fernando Road industrial corridor · Glenoaks Boulevard
- PacoimaSan Fernando Road and Paxton Street · Whiteman Airport area
- SylmarSylmar industrial area along San Fernando Road · Foothill Boulevard and the I-210
- ChatsworthNordhoff Street and Prairie Street industrial district · Lassen Street and Mason Avenue
- NorthridgeNorthridge Fashion Center · Northridge Hospital Medical Center area
What else do Los Angeles County owners ask about commercial roof inspection?
Do you inspect roofs in both the City of Los Angeles and the surrounding cities?
Yes, we inspect commercial roofs in City of Los Angeles neighborhoods and in the independent cities of the county alike. The inspection is the same everywhere, and only the permit office changes when repair or replacement work follows.
Which Los Angeles County roofs need attention most urgently?
Older bow-truss and built-up roofs in the Central Industrial belt and the San Gabriel Valley usually need attention first. Many are past 40 years and show wet insulation that is invisible from the surface until a scan finds it.
How does port and refinery air affect roofs in the South Bay?
Port and refinery air speeds up corrosion of metal flashing, fasteners and HVAC curbs on roofs in Wilmington, Carson and nearby cities. We check those details closely on every South Bay scan and note corrosion in the condition score.
Can you manage roofs across several Los Angeles County cities as one program?
Yes, a multi-building program can cover roofs in any mix of Los Angeles County cities under one schedule and one report format. Each building gets its own condition score, and the portfolio view ranks them for capital planning.
Do Los Angeles County reroofs need a cool roof?
Most Los Angeles County reroofs on low-slope commercial buildings must meet the Title 24 cool roof standard. The replacement plan in our report lists the reflectance requirement so budgets reflect it from the start.
Is there a minimum roof size for a Los Angeles County program?
There is no minimum roof size, but each program has a minimum annual fee. Monitor starts at $1,500, Protect at $2,500 and Manage at $4,500 per year.
How long does a roof scan take on a distribution warehouse in Los Angeles County?
A roof scan on a 120,000 square foot distribution warehouse in Los Angeles County takes about 2.5 hours at roughly 50,000 square feet an hour, and the PE-stamped report follows within 48 hours.
Which Los Angeles County cities have their own page?
Los Angeles County has 58 city pages on this site: Vernon, Commerce, City of Industry, Santa Fe Springs, Irwindale, Cerritos, Carson, Torrance, Compton, Gardena, Paramount, Downey, Norwalk, Pico Rivera, Montebello, Monterey Park, Alhambra, San Gabriel, El Monte, South El Monte, Azusa, Baldwin Park, Covina, West Covina, Walnut, Duarte, Arcadia, Monrovia, Pasadena, Pomona, La Verne, San Dimas, Glendora, Whittier, La Mirada, Lakewood, Bellflower, Long Beach, Signal Hill, Wilmington, San Pedro, Inglewood, Hawthorne, El Segundo, Redondo Beach, Santa Monica, Culver City, Lynwood, South Gate, Huntington Park, Burbank, Glendale, Van Nuys, Sun Valley, Pacoima, Sylmar, Chatsworth, Northridge.
Schedule a non-destructive roof scan anywhere in Los Angeles County.
Trusted since 1983 on over 20,000 commercial roofs. California License 435836.