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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 looks different than it does almost anywhere else in the country. Most LA homes have flat or low-slope roofs, which means your replacement is about drainage, coatings, and parapet flashing rather than shingle wind ratings. Seacrest Roofing has been handling exactly this kind of work across Los Angeles for years. We stock seven major shingle and membrane brands, so whether your 1920s Spanish Revival in the Wilshire corridor needs a full tear-off or your 1960s flat-roof duplex near Koreatown needs a new TPO membrane, we’ll give you a straight answer on what it takes. Call (855) 597-2817 to schedule a free roof replacement estimate in Los Angeles.
Why Seacrest Roofing Is Los Angeles’s Preferred Roof Replacement Company
What sets us apart in Los Angeles is that we don’t come to your roof with a single brand and a single answer. We’re authorized installers across seven manufacturers, including GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means when we inspect your flat roof in Silver Lake or your bungalow in Echo Park, we diagnose the actual problem first, then match the material to the roof, not the other way around. Too many Los Angeles roofers push one product line because that’s what they have in the warehouse. We carry the full lineup.
Noel Chambers, our lead at Seacrest Roofing, built the company around this material-neutral approach. It matters especially in Los Angeles, where the right answer for a 1930s Spanish Revival with a built-up tar roof is rarely the right answer for a 1970s flat-roof box in Hollywood. Los Angeles homeowners comparing contractors tell us the same thing: they want someone who will show them every option and explain the tradeoffs without pushing. That’s how we work. Our inspections are a standalone service too. You can get a professional assessment of your Los Angeles roof without any commitment to move forward.
Styles & brands we work with






Reroofing in Los Angeles
Reroofing in Los Angeles means installing a new roof over the existing one when the underlying structure is still sound and only one layer is currently in place. On flat and low-slope roofs, this often comes down to whether the existing membrane or built-up roof is still adhered well enough to serve as a substrate. For many Los Angeles homes with torch-down or hot-mop roofs, reroofing is not viable because the saturated felt and cracked layers underneath will telegraph problems through any new material. We’ll tell you plainly when a reroof works and when it doesn’t.
A reroof on a typical Los Angeles flat or low-slope home runs $6,500 – $11,000 depending on square footage and material. If you’re in a 90036 or 90039 ZIP with an older built-up roof, expect us to look hard at the condition underneath before recommending this route. We’d rather tell you it needs a full tear-off than sell you a reroof that fails in two winters.
Single-Ply Membrane Reroof
When the existing roof is a sound single-ply system like older TPO or EPDM, we can often install a new membrane directly over it. This keeps labor costs down and avoids the dump fees and tear-off noise that come with a full replacement. We use the same GAF and Owens Corning membrane systems we’d install on a full tear-off.
Coating-Over-Built-Up Reroof
Some Los Angeles homeowners ask about recoating an old built-up roof instead of replacing it. If the existing hot-mop layers are still intact and dry, a new elastomeric coating can buy a few years. But we’re honest about the limits: a coating over cracked, sun-baked felt is a bandage, not a fix. Los Angeles’ dry-season neglect cycle hides the real damage until the first winter downpour.
Flat Roof Replacement in Los Angeles
Flat roof replacement in Los Angeles is the core of what we do, because flat roofs are the core of LA’s housing stock. A full replacement on a flat roof means tearing off the old membrane or built-up layers down to the decking, inspecting and replacing any rotted or saturated sheathing, then installing a new system. For most Los Angeles homes, that system is a TPO or PVC single-ply membrane with new flashing at every parapet wall, penetration, and drain.
A full flat roof replacement in Los Angeles typically runs $11,000 – $24,000 for a standard residential roof depending on size, access, and whether we’re adding tapered insulation to correct ponding. Crews working in 90037 and 90038 deal with dense stucco apartment buildings and tight alley access, which can add labor hours. We scope every job in person before quoting, and our line-item estimates show exactly where your money goes.
Tapered Insulation and Drainage Correction
The single most common upgrade we make on Los Angeles flat roofs is adding tapered insulation to direct water toward drains and scuppers. Decades-old flat roofs were often built with insufficient slope, and decades of UV damage have made the problem worse. When water ponds after a rain, membrane seams sit in standing water and fail faster. Correcting the slope with tapered ISO board is part of the replacement, not an upsell.
Parapet Wall Flashing and Re-Sealing
Parapet walls define Los Angeles’ flat-roof skylines, and they’re where flat roofs leak most often. Years of UV exposure delaminate the flashing metal and the counter-flashing separates from the stucco, letting water wick down behind the wall during the first heavy rain. On every flat roof replacement, we strip the parapet flashing down to the substrate and re-flash it with new metal, properly lapped and sealed.
Trusted Brands We Service in Los Angeles
Seacrest Roofing installs GAF, CertainTeed, Owens Corning, and IKO systems on Los Angeles roofs, along with Atlas, Tamko, and Boral. We keep local access to these products so turnaround on your Los Angeles replacement doesn’t stall waiting on a distributor. What matters more than the brand name is the match: for low-slope Los Angeles roofs, we lean on GAF Liberty and CertainTeed systems for their low-slope ratings and the manufacturers’ warranty programs. Oakwood homeowners and Mid-Wilshire condo owners get the same material-neutral recommendation, not a one-brand pitch.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Los Angeles Homes
- Parapet wall flashing delaminates after years of sun. UV breaks down the seal between flashing and stucco, and the first winter storm drives water behind the wall. We strip and re-flash every parapet as standard practice.
- Undersized scuppers and interior drains. Many Los Angeles flat roofs were built with drains sized for a different era. Los Angeles County Building Code now requires verification of scupper and drain capacity against current flow rates. We catch undersized drains before they cause a ponding failure.
- Sun-baked elastomeric coatings hiding saturated decking. The dry-season Los Angeles cycle cracks and blisters old coatings while the felt and sheathing underneath stay wet. A tear-off often reveals damage no visual inspection could have spotted.
- Santa Ana wind peel-back on membrane edges. October wind events in Los Angeles lift flat-roof membrane edges at the parapet and at penetrations. If an edge has any age on it, the Santa Anas will find it.
Pricing for Roof Replacement in Los Angeles, CA
Roof replacement pricing in Los Angeles runs in predictable ranges. A flat roof replacement on a 1,500-square-foot home lands between $12,000 and $22,000. A smaller bungalow flat roof in Koreatown or Echo Park might come in at $9,000 – $13,000. A mid-century flat-roof duplex near Hollywood could run $18,000 – $28,000 depending on whether we’re adding tapered insulation and new drainage. The two biggest factors in Los Angeles are tear-off depth (one layer versus multiple built-up layers) and whether the existing drains pass current code. Every Seacrest estimate is line-item, and it’s free. Call (855) 597-2817 and we’ll walk your roof with you.
We Also Serve Cities Near Los Angeles
Beyond Los Angeles itself, our crews work regularly in Koreatown, Echo Park, Silver Lake, and Hollywood. If you’re in one of these neighborhoods and comparing Roof Replacement in Los Angeles companies, we’d like to put an estimate in front of you. Same material-neutral approach, same line-item pricing.
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
Yes, Los Angeles County requires a building permit for flat roof replacement, and we pull that permit for every job. The permit process includes an inspection verifying that your existing scupper and interior drain sizing meets current flow-rate requirements under the Los Angeles County Building Code. If your drains are undersized, the permit will not close until they’re corrected. We handle this as part of the replacement scope, not as an add-on. Call (855) 597-2817 and we’ll explain exactly what your roof needs to pass inspection.
We scope both buildings separately and quote them as one job with a single mobilization. A detached ADU or shop in Los Angeles usually has its own flat roof with its own drainage issues, and the county permit covers both structures on the lot. Working both roofs at once saves you on dump fees, equipment rental, and our setup time. We’ll walk the whole lot before quoting so there are no surprises when the crew shows up. Call (855) 597-2817 for a free estimate on the full property.
Los Angeles’ long dry season is the cause. Months of UV radiation crack and separate the roof membrane, and those hairline cracks go unnoticed because it never rains. Then the first winter storm arrives, and suddenly every crack, every separated seam, and every failed parapet flashing lets water in at the same time. The roof didn’t fail that week; it failed incrementally over months and revealed itself in one rain. That’s why we recommend spring and fall inspections, before the wet season hits. Call (855) 597-2817 to schedule one.
Not every flat roof requires tapered insulation, but many Los Angeles homes benefit from it, and in some cases the county’s drainage flow-rate verification effectively requires it. If your roof ponds water after standard rain, the standing water sits on membrane seams and shortens the roof’s life. Adding tapered insulation to create positive slope is the correct fix, and we’ll tell you in the estimate whether your roof needs it and what it adds to the price. Call (855) 597-2817 and we’ll show you the numbers.
Square-footage discrepancies on flat roof bids usually come down to how each contractor measures. Some quote only the horizontal deck area; others include parapet walls, curbs, and upstands, which legitimately add membrane. The right number is the actual surface area being covered, including all vertical surfaces. We measure every job in person with a laser, show you the dimensions on the estimate, and explain exactly what’s included. If a bid is vague about squares, ask for the measurement. Or call (855) 597-2817 and we’ll give you a line-item number you can compare against any other bid in Los Angeles.
We’ve seen flat roofs all over Los Angeles that were patched year after year when they should have been replaced. A 22-square GAF Liberty low-slope assembly we did on a 1950s flat-roof duplex near 84th Street in the 90001 ZIP was a good example. The original hot-mop had cracked and separated along the parapet walls, and the owner had lived with interior drips for six winters. We tore off to the decking, installed new tapered insulation to correct ponding, added a secondary scupper at the low corner, and finished with GAF EverGuard TPO and new flashing at every penetration. That first winter rain produced no interior leaks for the first time in six years. That’s the standard we bring to every Los Angeles roof.
For a free, honest estimate on your Los Angeles roof replacement, call (855) 597-2817 and ask for Seacrest Roofing. Roof Replacement is what we do, and we’ll show you every material option that fits your roof and your budget.
Written by Noel Chambers, Owner at Seacrest Roofing, serving Los Angeles with honest roof replacement since day one.