Metal roofing
Architectural shingles
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GAF
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Los Angeles
Roof replacement in Los Angeles usually costs between $9,500 and $22,000 for a typical single-family home, with flat and low-pitch built-up roofs on pre-war apartments running higher because of the tear-off and gutter work involved. Most of the housing in central and South LA was built between the 1920s and 1950s, which means your roof is more likely to be flat or nearly flat than pitched, and that changes everything about how the replacement gets scoped. We’re Koreatown Roofing, and we work these neighborhoods every day with Roof Replacement crews who know what LA’s housing stock actually looks like under the surface. Call (866) 974-2271 to have us look at your roof and give you a straight answer.
Why Koreatown Roofing Is Los Angeles’s Preferred Roof Replacement Company
We’re a roofing-only contractor, which means every job we take in Los Angeles is a roof, not a kitchen remodel or a bathroom that happens to have a leak. Manny Cordero, who runs our replacement crews, has spent years walking the streets of Koreatown, Echo Park, and the neighborhoods around USC, and he can tell you what a pre-war box gutter is doing just by looking at the staining on the stucco. That kind of local knowledge is not something a franchised call center can phone in. Our clients in Los Angeles call because they want someone who answers the phone from a few blocks away, not a rotating crew from two counties over.
When you’re replacing a roof on a 1920s bungalow or a flat-roof apartment building near Vermont Avenue, the details matter. We know which buildings in the 90036 and 90039 ZIPs have original wood shake under the composition shingles, and which ones were re-roofed in the 1980s with a tar-and-gravel system that’s now cracking. Our approach to Roof Replacement in Los Angeles is built on that familiarity. We inspect first, explain what’s actually there, and then give you real material options from seven manufacturers. No single-supplier dependency, no take-it-or-leave-it brand pitch.
Styles & brands we work with
Asphalt Shingle Roof Replacement in Los Angeles
Asphalt Shingle Roof Replacement in Los Angeles typically runs $9,500 to $16,000 for a standard single-family bungalow, depending on the number of layers being torn off and whether the decking underneath is still sound. The Los Angeles version of this job is different from what you’d see in the Inland Empire, because so many of our shingle roofs are on low-pitch 1920s and 1930s homes where the original framing wasn’t built for two layers of modern architectural shingle. We regularly find original wood shake under old composition shingles, and that changes the tear-off scope.
What Replacement Involves Here
We strip everything down to the decking, because you can’t tell what’s happening underneath the shingles from the surface. On Los Angeles bungalows, rotten decking at the drip edge is common, especially near the shallow box gutters that only show leaks after the first big winter rain. We replace damaged decking boards, lay the proper underlayment, and install shingles that can handle LA sun without curling within a few summers.
Materials That Hold Up in LA
The sun in these neighborhoods is brutal on asphalt. We recommend architectural shingles with a higher granule density for South LA roofs, and we install ridge vent and proper airflow so heat doesn’t bake the underside of the decking. GAF in Los Angeles and CertainTeed are two of the brands we stock locally, and we’ll spec whichever fits your roof’s pitch and your budget.
New Roof Installation in Los Angeles
New Roof Installation in Los Angeles, whether it’s for a new construction or a full tear-off to bare framing, typically runs $14,000 to $24,000 for single-family homes and more for flat-roof multifamily because of the built-up roofing layers involved. A new roof on a Los Angeles pre-war apartment building isn’t the same scope as a new roof on a 2005 tract home. On new construction, we’re also looking at roof decking replacement and flat roofing installation on many of the structures going up in the 90037 and 90038 corridors.
New Construction and Flat Roofing
When we install a new roof on a new build in Los Angeles, we spec materials that match both the architectural style and the climate reality. Flat roofing here means built-up roofs or a membrane system with tapered drainage, not just rolled asphalt and hope. The ponding water we see on flat roofs across South LA is a consequence of poor drainage design, and a new install is your best chance to get that right from the start.
Decking and Underlayment on LA-Spec Roofs
Most of the decking under Los Angeles flat roofs is solid but old, and we inspect it before we ever quote a replacement. If you’re building new or re-roofing a bungalow with a low-pitch deck, we treat the underlayment and flashing as load-bearing decisions, not afterthoughts. Owens Corning and Boral are two more of the manufacturers we install, and we’ll walk you through which system fits your building’s framing and drainage.
Trusted Brands We Service in Los Angeles
Your roof, your material choice. We install from seven leading manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Los Angeles customers, that matters because it means we recommend a material based on how it performs on your roof, not because we have one brand in the yard and need to move it. We stock local parts for the common systems in these neighborhoods, so a replacement doesn’t sit waiting for a special-order shingle or a flashing profile that nobody in the 90036 ZIP carries. We work with the brands you already trust, and we’re not obligated to push any single one. That’s the whole point of being a roofing-only contractor.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Los Angeles Homes
- Box-gutter seams on pre-war flat roofs fail year after year. The ponding water at the seam eats through flashing and then the decking beneath it, which is why the same apartment buildings around USC call for patches every winter. A proper replacement rebuilds the gutter with new flashing and sealed joints, not another coat of mastic.
- 1920s bungalow low-pitch roofs only leak after the first winter storm. A roof that looks fine in September is already failing at the drip edge and valleys, because shallow gutters hold water against the roof’s edge for days. By the time you see the stain on the ceiling, the decking under it has been wet for weeks.
- LA sun and heat degrade asphalt shingles faster than most climates. The dry heat bakes the oils out of composition shingles, and we see granule loss on south-facing slopes within a decade. A cheap spec that skips proper underlayment and ridge vent shows its age within a few summers.
- Pre-war apartment buildings hide rotten decking under built-up roofs. The tar-and-gravel systems from the 1970s and 1980s crack at parapet walls and around roof drains, and once water gets under the cap sheet, it rots the decking silently. Tear-off is the only way to know what you’re actually working with.
Pricing for Roof Replacement in Los Angeles, CA
A typical asphalt shingle roof replacement in Los Angeles runs $9,500 to $16,000, and a flat or built-up roof on a pre-war building runs higher, often $14,000 to $24,000, because of the tear-off, gutter work, and drainage correction involved. What drives the cost here isn’t just square footage. It’s how many layers are on the deck, whether the box gutters need rebuilding, whether the decking is sound, and whether your building is in a hotter microclimate like the 90037 or 90038 blocks near the 10. We give free estimates on every replacement, and we’ll walk you through the line-item scope before you sign anything. Call (866) 974-2271 to schedule yours.
We Also Serve Cities Near Los Angeles
Our replacement crews work daily across Los Angeles and into the surrounding neighborhoods where the housing stock runs older and flatter. We’re in Koreatown every day, and we regularly handle replacements in Echo Park, Silver Lake, and Hollywood. If you’re in one of those neighborhoods and wondering whether your roof is due, the answer usually starts with us coming out and looking at what’s actually on your deck. Call (866) 974-2271.
Serving Los Angeles, CA — Our Local Coverage Area
We’re based in the Los Angeles 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 Los Angeles
Your low-pitch bungalow roof leaks after the first rain because shallow gutters hold water against the drip edge and valleys for days, and that standing water finds every small seam that the dry season has opened up. In Los Angeles, the long dry season means the roof membrane contracts and the flashing loosens, so by November the roof is full of small gaps waiting for the first real storm. Call (866) 974-2271 and we’ll inspect the drip edge and valleys before the next rain arrives.
We rebuild box gutters by tearing off to sound decking, replacing the flashing, and sealing the joints with new material rather than patching over old mastic. On these pre-war buildings around USC and Koreatown, the box gutter is a structural feature as much as a drainage one, and skipping the seam work means the same leak comes back next winter. Our Roof Replacement crews do this work in-house; we don’t subcontract it out to a generalist crew.
Yes, we measure in roofing squares, which are 100 square feet each, and we quote per square after accounting for tear-off, decking, underlayment, flashing, and gutter work. A straight re-shingle on a standard Los Angeles bungalow might be 15 to 20 squares, but a flat built-up roof on a pre-war apartment is a different calculation entirely. We’ll show you the square count on your written estimate.
We install from seven manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For your Los Angeles roof, the right brand depends on the roof’s pitch, the sun exposure, and the drainage profile, and we’ll walk you through the trade-offs without pushing a single supplier. Manny Cordero can show you samples and explain which systems hold up best on LA’s flat and low-pitch housing stock.
We inspect the decking and soffit because that’s where Los Angeles roofs fail first: ponding water at box-gutter seams and shallow drip edges rots the decking from underneath, while the soffit shows the first signs of trapped heat and moisture. A quote that skips that inspection is guessing, and a guess means a change order once the old roof comes off. We’d rather look before we quote. Call (866) 974-2271 for a free estimate.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Los Angeles.