County coverage
Roof repair and replacement across southeast Los Angeles County
We cover the southeast corner of Los Angeles County: Long Beach, the Gateway Cities to its north, the Harbor area and the eastern edge of the South Bay. We do not serve the whole county.
Roofing in Los Angeles County at a glance
Nearest office: Long Beach. Phone answered 24/7.
Call (562) 414-1770Los Angeles County is huge, and no single roofing company covers all of it well. Our service area is the part we can reach quickly from our Long Beach office at 421 E 1st Street and our La Mirada office at 13303 Biola Ave. That includes Long Beach and Signal Hill, the Gateway Cities such as Lakewood, Bellflower, Downey, Norwalk, Cerritos, Artesia, La Mirada and Whittier, and the Harbor and South Bay communities of Carson, San Pedro and Torrance.
Within that area, housing ranges from early 1900s bungalows and Spanish Revival homes to post-war tracts, mobile home parks, apartments and large industrial buildings. Each part of the area has its own building department and its own roofing patterns. Our crews know those differences because we work here every week.
Homes and roofs in the parts of LA County we serve
Near the coast, in Long Beach, San Pedro and parts of Torrance, older Craftsman, Spanish Revival and mid-century homes face salt air and marine haze. Clay tile, concrete tile, shingle and flat roofs all appear, and metal flashing and fasteners wear out faster here. Many apartment buildings and commercial roofs line the harbor and downtown areas.
Inland, the Gateway Cities are mostly post-war tract neighborhoods with single-story homes and shingle or concrete tile roofs, along with older cores in Downey and Whittier. Carson and parts of the area have mobile home parks and industrial buildings. Summer heat and sun are harder on roofs inland than at the coast.

Roof problems we see most in Los Angeles County
Coastal corrosion
Within a mile or two of the ocean or harbor, flashing, vents and nails rust faster. Leaks often start at corroded metal parts.
Aging post-war roofs
Many 1950s homes in the Gateway Cities are on aging second or third roofs. Shingles curl, crack and lose granules.
Tile underlayment failure
Concrete and clay tile roofs often outlast their felt underlayment. Leaks appear in the first big storm after years of dry weather.
Flat roofs on apartments and businesses
Low-slope roofs on apartments, shops and warehouses pond water and fail at seams and penetrations.
Permits and response times across our LA County area
Each city we serve in Los Angeles County has its own building department, and San Pedro falls under the City of Los Angeles. Long Beach has historic districts where visible changes can need extra review. We handle permits and inspections in every city and check Title 24 cool roof rules before ordering material.
Our two offices split the area well. Long Beach crews cover the coast, the Harbor area and nearby cities, while La Mirada crews cover the Gateway Cities to the north and east. We answer the phone 24/7 and dispatch from whichever office is closer when a storm opens up a leak.
Most-requested here
Roofing services for Los Angeles County
Roof Repair
Roof repair covers the targeted fixes that keep a roof working: replacing broken tiles or shingles, resealing penetrations, fixing flashing and patching worn sections of a flat roof.
Read moreRoof Replacement
Roof replacement means tearing the old roof down to the decking, fixing what is underneath and installing a new roof system.
Read moreTile Underlayment Replacement
Tile underlayment replacement, often called lift and relay, means removing your tiles, replacing the worn underlayment and flashings, and putting the sound tiles back.
Read moreCommercial Roofing
Commercial roofing covers repair, restoration and replacement of low-slope roofs on warehouses, retail centers, offices, restaurants and light industrial buildings, using systems such as TPO, PVC, modified bitumen, built-up roofing, spray foam and coatings.
Read moreEmergency Roof Repair
Emergency roof repair is the work that stops water getting in fast: tarping, temporary patches and securing loose material until a permanent repair can be made.
Read moreFAQ
Questions from Los Angeles County
Which parts of Los Angeles County do you serve?
We serve the southeast part of Los Angeles County: Long Beach and Signal Hill, the Gateway Cities such as Lakewood, Bellflower, Downey, Norwalk, Cerritos, Artesia, La Mirada and Whittier, and the Harbor and South Bay areas of Carson, San Pedro and Torrance. We do not cover the whole county. Call us if you are unsure whether your address is in our area.
Do roofing permits differ between cities in Los Angeles County?
Yes. Each city in Los Angeles County runs its own building department, and San Pedro is handled by the City of Los Angeles. Requirements and inspection steps vary. We handle the permit and inspection in whichever city your home is in.
How fast can you respond to a roof leak in our part of Los Angeles County?
With offices in Long Beach and La Mirada, we can reach most of our Los Angeles County area quickly. During storms we prioritize active leaks and tarp as needed. Call our 24/7 line and we dispatch from the nearest office.
Roof trouble in Los Angeles County?
Call Denco at (562) 414-1770. Someone answers 24 hours a day, and our crews work out of Long Beach and La Mirada.