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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 | Gable Roof Repair
We provide independent CertainTeed roofing service across Lomita, CA, handling everything from leak diagnosis and flashing repair to full replacements. What sets our CertainTeed work here apart is simple: we understand how these shingles actually behave on Lomita’s low-pitch mid-century ranch roofs, where marine-layer damp and salt air create failures other roofers miss. Call (866) 650-8319 for a free estimate.
Lomita sits in a narrow pocket of the South Bay where 1950s and 60s tract housing dominates, and those original roofs are reaching the end of their service life right about now. We work on CertainTeed Landmark, XT 25, XT 30, Presidential Shake, and Presidential TL assemblies weekly. If you need CertainTeed sales & service from a crew that actually knows how these products fail under coastal conditions, you’ve found the right page.
Why Lomita Residents Choose Us for CertainTeed Service
We’ve spent years pulling worn CertainTeed assemblies off Lomita’s ranch roofs, and that’s the kind of experience you can’t fake. Neil Drummond, owner at Gable Roof Repair, grew up around Orange County’s older housing stock and learned early that the roof is where residential failures start. His training at Saddleback College’s construction technology program gave him the framing and waterproofing fundamentals, but it’s the decades of hands-on roof work since that built the diagnostic instinct our customers rely on.
We carry OEM-compatible CertainTeed materials and match color and profile to your existing assembly when a repair makes sense. No single-brand upsell here. We work with seven major shingle manufacturers because your roof came with a specific product, and the fix should match it. That’s why our approach is inspection first, recommendation second. If a two-square patch over sound decking solves the problem, that’s what we tell you. If the decking is shot and a full replacement is honest, we tell you that too. We serve all of Lomita service area with the same standard.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Lomita
- Chimney and swamp cooler leaks after winter storms. Lomita’s marine-layer damp settles into fascia and sheathing edges around chimneys and old swamp coolers, producing hidden dry-rot that only shows itself as a stain after the first real rain. The shingles look fine from the ground, but the deck underneath is failing. We pull the affected courses, inspect the framing, and replace what’s rotted before reinstalling.
- Wind-driven rain backing up under shingle courses on low slopes. Lomita’s ranch homes often sit at pitches low enough that winter storm winds push water uphill beneath the shingle laps. CertainTeed XT 25 and XT 30 three-tab roofs on these slopes are especially vulnerable, since the reduced lap coverage can’t shed water fast enough. We correct this with proper underlayment and, where needed, re-sloped flashing at valleys.
- Rusted flashing and fasteners from salt-laden air. The onshore breeze off the Palos Verdes peninsula and harbor area carries salt that eats through valley metal, pipe collars, and exposed fastener heads years before the shingle field wears out. We replace corroded flashing with properly rated metal and inspect every penetration while we’re up there.
- Sun-baked seal strips that won’t bond after cool nights. CertainTeed shingles on south and west roof planes in Lomita get hammered by afternoon sun, then cool rapidly once the marine layer rolls in. Over years, the seal strips lose their tack, leaving tabs loose and vulnerable to wind lift. We re-seal or replace affected courses depending on the extent of the damage.
- Hidden dry-rot over 1x skip sheathing with second-layer shingles. Lomita’s older homes often have original 3-tab CertainTeed shingles with a second layer stacked on top of skip sheathing. That assembly traps moisture against the deck, and the rot that results is invisible until the leak appears. We pull both layers, inspect every board, and re-deck where the wood has given up.
CertainTeed Service in Lomita: What Local Conditions Mean for Your Roof
Lomita Boulevard runs through the heart of the 90717 core, and the ranch homes along that corridor share a failure pattern we don’t see across town in Irvine or Costa Mesa, or even just west in CertainTeed in West Carson. The marine layer settles in overnight, damp gets trapped under second-layer 3-tab shingles over skip sheathing, and dry-rot develops at the fascia and sheathing edges around chimneys and old swamp coolers. By the time a homeowner sees the ceiling stain after a winter storm, the deck has been quietly failing for months. That’s why a leak call in Lomita is really a deck-and-flashing inspection, not a shingle patch. If you live near Lomita Boulevard and your home still carries its original or second-layer roof, the smartest move is a free inspection before the next storm cycle.
CertainTeed Models & Products We Service in Lomita
We service the full range of CertainTeed residential lines, including Landmark architectural shingles, XT 25 and XT 30 three-tab shingles, Presidential Shake and Presidential TL, plus DiamondDeck and RoofRunner underlayments. When a repair calls for partial replacement, we match the existing shingle’s color and profile, and we use CertainTeed underlayment where the original product was installed. Our local stock covers the most common Landmark colors and accessory components, so Lomita jobs don’t stall waiting on parts. If you’re comparing CertainTeed service in South Gate or anywhere else in the region, the same parts-and-matching standard applies.
See the difference
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AfterCertainTeed Service Pricing in Lomita
CertainTeed service costs in Lomita vary by scope, but here’s what drives the number:
- Small leak repair (shingle or flashing): $350 – $900, depending on access and the number of affected courses.
- Chimney flashing replacement: $600 – $1,400, higher if the surrounding decking needs replacement.
- Valley metal replacement: $500 – $1,200 per valley, depending on length and metal gauge.
- Full CertainTeed Landmark replacement on a typical Lomita ranch: $9,000 – $16,500, including tear-off, new underlayment, and flashing.
Your free estimate includes a written line-item quote. We don’t quote over the phone without seeing the roof. Call (866) 650-8319 to schedule a visit and get exact numbers for your Lomita home.
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
The leak is almost always in the flashing or the decking around the chimney, not the shingle field itself. Lomita’s marine-layer damp rots the fascia and sheathing edges at chimney penetrations, and the shingles continue to look fine from the ground while the structure underneath fails. We inspect the flashing, the deck, and the shingle-to-chimney transition together. Call (866) 650-8319 for an exact diagnosis and a free estimate.
We won’t do it on most Lomita ranch homes. If your house has original 3-tab over 1x skip sheathing, or a second layer already stacked on top, a new layer over that traps moisture and guarantees early failure. We tell you plainly when re-decking and a full replacement is the honest answer. The roof doesn’t lie – the materials tell you exactly what went wrong and when.
Landmark works well on Lomita’s low-pitch ranch roofs when installed with proper underlayment and flashing details. The key is ensuring the deck is sound before installation. On homes with skip sheathing or existing rot, the deck needs replacement first – otherwise even a quality shingle like Landmark can’t perform.
The salt-laden onshore air that comes off the Palos Verdes peninsula and the harbor area accelerates corrosion on exposed metal, a pattern we also address with CertainTeed in Rolling Hills Estates. Fasteners and valley metal take the brunt of it, often failing years before the shingle field itself is spent. We replace corroded components with properly rated metal and inspect every penetration during service.
No. We are an independent South Bay roofing company that works on CertainTeed products every week, but we are not authorized, sponsored, or endorsed by CertainTeed. We choose to service their shingles and underlayments because they’re common on Lomita’s homes and we know how they age under coastal conditions. That independence means our recommendation is based on your roof’s actual condition, not a brand quota.
Service Areas Near Lomita
We serve Lomita and the surrounding South Bay communities. Our crews also work regularly in Irvine, Tustin, Costa Mesa, and Santa Ana. If you’re looking for CertainTeed service in Baldwin Park, we cover that area too. Call us to confirm coverage for your street.
Book Your CertainTeed Service in Lomita Today
Your Lomita roof has been dealing with marine-layer damp, salt air, and low-slope drainage for decades. Let’s see what’s actually going on up there. Call (866) 650-8319 to schedule your free estimate, and we’ll give you an honest read on what your CertainTeed roof needs.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Lomita and the South Bay since day one, including Manhattan Beach CertainTeed service.