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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
CertainTeed Roofing in Lomita, CA | Koreatown Roofing
We provide independent CertainTeed roofing service across Lomita, from routine shingle replacement to leak repair on Landmark, XT 25, Presidential Shake, and Flintlastic systems. The thing that makes CertainTeed work different here is the marine layer: Lomita’s fog keeps north-facing roof planes damp long into the morning, and that moisture is what kills shingles years before the sun-exposed slope on the same house. Manny Cordero’s crews know which CertainTeed systems hold up on Lomita’s postwar tract homes and which ones need closer watching. Call (866) 974-2271 for a free estimate.
Why Lomita Residents Choose Us for CertainTeed Service
We work on CertainTeed roofs every week across Lomita, which means we know exactly how Landmark architectural shingles, XT 25 three-tabs, and Flintlastic low-slope systems perform under the city’s coastal fog. Unlike a general contractor who sees a roofing job twice a year, roofing is all we do. That focus pays off when a homeowner needs a straight answer about whether a CertainTeed roof is worth repairing or should come off. Manny Cordero learned material specs and installation sequencing at Los Angeles Trade-Technical College before he ever touched a customer’s roof, and he’s been applying that training on Lomita houses for over two decades. Our stance is simple: CertainTeed sales & service mean we stock OEM shingles and accessories for color and warranty consistency, and we’re not shy about switching to quality aftermarket flashing when OEM lead times would leave a leak open. Tell us what your roof actually needs, and that’s what you’ll get, no upsell, no guesswork.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Lomita
- Landmark sealant strip failure on north-facing slopes. Lomita’s fog-cooled, shaded roof planes keep shingles damp well past sunrise. On CertainTeed Landmark roofs, that prolonged moisture softens the sealant strips, so tabs lift and curl while the sunny slope stays flat. We routinely replace the failed plane and leave the good one alone.
- XT 25 tab corner cracking on 1940s – 60s tract homes. The three-tab XT 25 was common on Lomita’s postwar stucco houses, many of which still have original skip sheathing underneath. When marine moisture cycles with Santa Ana heat, the tab corners crack. That’s a repair we see almost weekly on older streets off Lomita Boulevard.
- Flintlastic SA lap and flashing failures at detached garages. Low-slope additions and detached garages tie into the main roof along step flashing and lap seams. If overnight damp prevents proper adhesion during installation, those laps fail early. We’ve fixed this exact issue on more Lomita rooflines than we can count.
- Presidential Shake algae and edge rot on shaded planes. The thicker profile of Presidential Shake traps moisture between the shingle and underlayment, and Lomita’s fog means that moisture lingers. On north-facing or tree-shaded slopes, we see premature algae and edge rot that inland roofs never get.
- Corroded flashing and vent boots from constant damp. The marine layer doesn’t just wet shingles, it keeps metal flashing and vent boots damp for hours every day. Corrosion sets in faster than homeowners expect, and it’s often the real source of a “shingle leak” in Lomita.
CertainTeed Service in Lomita: What Local Conditions Mean for Your Equipment
On the older streets off Lomita Boulevard, the north-facing roof planes stay wet long enough that CertainTeed Landmark tabs curl and lift from moisture, not heat. That’s the detail that changes everything about how we diagnose a CertainTeed roof in Lomita. On a 1950s stucco tract house just off Lomita Boulevard, our crew found the north-facing Landmark slope with lifted, curled tabs while the south slope was still flat and sealed. We replaced the failed plane with new Landmark shingles, upgraded the underlayment, and repaired the corroded vent boots and step flashing where the detached garage tied into the main roof. The homeowner avoided a full tear-off because we caught the moisture-driven failure before the decking got wet. A contractor unfamiliar with our Lomita service area would have quoted a full replacement. We quoted the repair, and the roof is watertight.
CertainTeed Models & Products We Service in Lomita
We install, repair, and replace CertainTeed in Torrance and the lines most common on Lomita homes: Landmark architectural shingles for sloped roofs, XT 25 three-tab shingles for older tract house re-roofs, Presidential Shake luxury shingles for higher-end Westside-style properties, and Flintlastic SA modified bitumen for the low-slope additions and flat sections that appear all over this built-out city. We use OEM CertainTeed shingles, underlayments, and accessories for color and warranty consistency, but we won’t wait weeks on a CertainTeed flashing lead time when a storm is coming. We switch to proven aftermarket flashing and vent boots to close a leak now, then note it on the invoice. That’s the practical call.
See the difference
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AfterCertainTeed Service Pricing in Lomita
CertainTeed repair and service pricing in Lomita runs roughly $350 – $900 for targeted shingle repair, $450 – $1,400 for flashing and vent boot work, and $2,800 – $7,000 for a full plane replacement, depending on slope height, access, and whether the decking or underlayment is involved. Full re-roofs of Lomita’s small postwar single-story homes vary with square footage and material line. Our free estimate includes a written, line-by-line breakdown, so you’ll see exactly where every dollar goes before any work begins. Call (866) 974-2271 and we’ll put a number on it.
Serving Lomita, CA — Our Local Coverage Area
We’re based in the Lomita 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 – CertainTeed Roofing in Lomita
That’s marine-layer moisture, not heat. Lomita’s fog cools the north-facing slope and keeps shingles damp for hours, which softens the sealant strips on CertainTeed Landmark shingles. The tabs lift and curl. The sunny side dries faster and stays sealed. It’s a repair, not a full replacement, in most cases. Call (866) 974-2271 and we’ll check both slopes.
Yes. If the leak is from lifted tabs, corroded flashing, or a failed vent boot, we replace the affected shingles and hardware. We only quote a full replacement when the decking or underlayment is compromised. Repair first is how we work in Lomita. Call (866) 974-2271 for a free estimate.
It does. Skip sheathing was standard on Lomita’s postwar tract homes, and it changes how we lay underlayment and fasten shingles. We’ll map the roof during inspection, explain what needs to come off, and write it into the quote. No surprises at demo time. Call (866) 974-2271 with your address and we’ll walk you through it.
We’re an independent contractor, not authorized or sponsored by CertainTeed. For warranty work, we document the installation and material conditions, then help you file directly with CertainTeed. Most Lomita homeowners find our repair-vs-replace guidance more useful than warranty paperwork, but we’ll help either way.
Yes. Flintlastic SA is designed for low-slope and flat roof sections, and we install it on Lomita additions and garage roofs regularly. The key is getting the laps sealed before the marine layer hits, which is something our crews plan around every morning. Call (866) 974-2271 for a quote on your addition.
Service Areas Near Lomita
Our CertainTeed roofing crews serve Lomita and the surrounding South Bay. You’ll also find us working in Torrance, Harbor City, Wilmington, Carson, and Redondo Beach. For reference, we also provide CertainTeed service in Monrovia and CertainTeed service in Palos Verdes Estates for clients who own property in those areas too.
Book Your CertainTeed Service in Lomita Today
Need a CertainTeed roof looked at? Call (866) 974-2271 to schedule a free estimate with our Lomita crew. We’ll inspect the roof, explain what’s actually failing, and quote only what the roof needs.
Written by Manny Cordero, Owner at Koreatown Roofing, serving Lomita and the South Bay.