Owens Corning
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Owens Corning Roofing in Sherman Oaks, CA | Marquis Roof Repair
We provide independent Owens Corning roofing service across Sherman Oaks, from mid-century ranches on the Valley floor to hillside homes south of Ventura Boulevard. The thing that makes our Owens Corning work different here is simple: we know how these shingles actually fail in this specific climate, where Santa Ana wind and brutal summer sun do more damage than rain ever will. Call (866) 705-2978 for a free Owens Corning roof estimate in Sherman Oaks.
Our team works on Owens Corning Oakridge, Duration, and Supreme shingle lines every week across Sherman Oaks. We’re a full-service roofing contractor, not a manufacturer affiliate, which means we call problems as we see them. Ron Thibodeau, our owner, spent more than two decades roofing across the San Fernando Valley before establishing Marquis Roof Repair, and he built the company around one habit: diagnose before recommending. That mindset matters when you’re deciding between a targeted Owens Corning repair and a full replacement.
Our Owens Corning sales & service work covers everything from single shingle replacements to complete tear-offs, always matched to the specific conditions of your Sherman Oaks roof.
Why Sherman Oaks Residents Choose Us for Owens Corning Service
We’ve spent years crawling across Owens Corning roofs in Sherman Oaks, and that local repetition teaches you things a manufacturer spec sheet never will. You learn which sides of which hills take the worst Santa Ana wind. You learn that a south-facing Oakridge roof on a 1960s ranch near the boulevards will show granule loss years before the same shingle on a shaded lot a few blocks over. You learn where the original flashing details on 1970s two-story hillside homes tend to pull loose first.
That’s the kind of familiarity that changes how we quote a job. We don’t guess at what your Owens Corning roof needs because the same sun and wind patterns that shaped it are patterns we see on dozens of Sherman Oaks homes every year. And when repairs are the right call, we use Owens Corning shingles and matching accessory components where the roof is sound, plus quality aftermarket underlayment and flashing where a better detail exists. The goal is a roof that handles the next Santa Ana and the next winter rain without a drip.
Ron’s background shapes how we work. He studied building construction technology at Los Angeles Valley College, then spent more than twenty years roofing across the Valley before Marquis Roof Repair took root. The standard here is methodical: find the actual source, not the symptom. Sherman Oaks homeowners who’ve been burned by upsells appreciate that we investigate before we recommend.
Styles & brands we work with






Common Owens Corning Roofing Problems We Solve in Sherman Oaks
- Granule loss and surface cracking from relentless sun. South-facing Owens Corning Oakridge and Duration shingles in Sherman Oaks get hammered by thermal cycling. Summer heat expands the asphalt, cool nights contract it, and after years of that the granule layer starts shedding and hairline cracks appear. On hillside roofs with full exposure, this shows up well ahead of the national lifespan estimates. We’ll tell you honestly whether it’s isolated enough to patch or far enough along to replace the field.
- Santa Ana wind uplift on ridge and rake shingles. Foothill neighborhoods south of Ventura Boulevard take wind that the flat blocks north of it never feel. Owens Corning shingles that lift along the ridge line or pull loose at the rake edges leave fastener holes exposed, and the season’s first rain finds those holes. We reset and replace lifted shingles before water gets in.
- Flashing failure at chimneys and sidewalls on hillside homes. The 1970s and 80s two-story homes tucked into the slopes around Sherman Oaks often carry flashing details that have been cooking in the Valley heat for forty-plus years. Thermal expansion pulls the metal loose from the mortar and the underlayment, and the first storm after a hot dry stretch pushes water straight in. We re-flash chimneys, sidewalls, and valleys with materials that outlast the original detail.
- Sudden leaks after the first real rain of winter. Sherman Oaks gets nearly all its rain in a short window, which means leaks don’t develop gradually the way they do in wetter climates. They surface suddenly, usually after a Santa Ana event lifted something and the first storm exploited it. When you see a ceiling stain in November or December, that’s the pattern.
- Hidden deck deterioration on re-layered hillside roofs. Older hillside homes in Sherman Oaks often have original or re-layered roofing that traps heat against the deck. The wood bakes and breaks down quietly, and soft spots only become obvious once the wind and sun have finished their work. We check deck condition on every hillside inspection because it’s the difference between a shingle job and a structural problem.
Owens Corning Service in Sherman Oaks: What Local Conditions Mean for Your Roof
Here’s something you won’t find on a national roofing blog: homes south of Ventura Boulevard toward the Santa Monica Mountains get noticeably more Santa Ana wind exposure than the flat neighborhoods a few blocks north. The same Owens Corning shingle can fail by wind uplift on a hillside roof while holding strong for years on a Valley-floor ranch a half mile away. Wind funnels down off the mountains and picks up speed through the canyons, and Sherman Oaks sits right in that path. We quote and repair differently depending on which side of Ventura you’re on, because the wind load isn’t equal across the ZIP codes we serve in 91403, 91413, and 91423.
After a fall Santa Ana event we were called to a 1970s two-story hillside home off the slopes south of Ventura Blvd where a row of Owens Corning Oakridge shingles had lifted along the ridge and the chimney flashing had pulled loose. We reset and replaced the lifted field shingles, re-flashed the chimney and sealed a valley that was starting to leak, and the owner made it through the first winter rain without a drip. That’s the Sherman Oaks version of roofing: wind and heat do the damage, rain just reveals it.
Owens Corning Models & Products We Service in Sherman Oaks
We service the full Owens Corning shingle range that shows up on Sherman Oaks homes: Oakridge architectural shingles, Duration architectural shingles, Supreme and other Class 3 tab asphalt shingles, and TruDefinition Duration Designer lines. Our parts approach is straightforward: use Owens Corning shingles and matching accessory components where the existing roof is sound, and quality aftermarket underlayment, flashing, and vent boots where they outperform the original detail. We stock common Owens Corning shingle profiles for faster turnaround on Sherman Oaks repairs, and we can source any current-production line within days. We’re an independent contractor, not affiliated with or authorized by Owens Corning, and we buy the same materials any licensed roofer can.
See the difference
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AfterOwens Corning Service Pricing in Sherman Oaks
Owens Corning roofing costs in Sherman Oaks depend on what we find when we get on the roof. A targeted repair for a few lifted or cracked shingles runs on the lower end, while re-flashing a chimney or sealing a valley lands somewhere in the middle. A full replacement with Oakridge or Duration architectural shingles sits higher, and the final number shifts with roof pitch, deck condition, and hillside access. Our free estimates include a written line-item quote so you can see exactly what’s being done and why. We’d rather show you a number than dance around it. Call (866) 705-2978 for an exact Owens Corning roof estimate in Sherman Oaks.
Serving Sherman Oaks, CA — Our Local Coverage Area
We’re based in the Sherman Oaks 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 – Owens Corning Roofing in Sherman Oaks
Yes, and it’s the most underrated roof killer in this part of the Valley. Santa Ana wind shears tab edges and lifts ridge and rake shingles on foothill homes, exposing fastener holes that the next rain finds. Hillside streets south of Ventura Boulevard take the worst of it, and we see the same Owens Corning shingle lines fail there years before identical shingles on flat lots a few blocks north. Call (866) 705-2978 if you suspect wind damage, and we’ll assess the actual condition before recommending anything.
Because the leak was created months earlier, during the hot dry stretch or a Santa Ana event. Thermal expansion pulls flashing loose over the summer, wind lifts shingles and exposes fasteners, and then the first storm pushes water into openings that didn’t exist when the previous winter ended. Sherman Oaks’s concentrated rain window makes this pattern especially common. If you see a stain after the first storm, don’t wait for the second. Call (866) 705-2978 for a free inspection.
Yes, when the damage is isolated to a few shingles or a single flashing line, a precise repair is the right call. We replace the damaged Owens Corning shingles with matching product and re-secure the surrounding field. The honest limit: if the shingle field is broadly sun-cracked or the deck beneath is soft, a repair won’t hold and we’ll tell you that plainly. The decision starts with a free inspection at (866) 705-2978.
For most hillside Sherman Oaks homes, an architectural shingle like Owens Corning Duration or Oakridge is the smart base choice, with installation details that account for wind uplift along ridges and rakes. TruDefinition Duration Designer adds color options without changing the structural profile. The slope, the deck condition, and the specific wind exposure on your street should drive the final pick. We’ll walk you through it on the roof, not from a brochure. Call (866) 705-2978 to schedule a look.
We’re a full-service roofing contractor, so we inspect, repair, and replace tile and metal roofs alongside Owens Corning shingle work. Our seven-manufacturer material portfolio includes GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral, which means recommendations are driven by your roof and your Sherman Oaks exposure, not by whichever brand is convenient that week. If you’re not sure what you have, call (866) 705-2978 and we’ll tell you straight.
Service Areas Near Sherman Oaks
Our Owens Corning service covers Sherman Oaks and the surrounding south Valley. We also work across the hills in Owens Corning service in Koreatown, over through Studio City and Universal City, and south into Owens Corning service in Beverly Hills. If you’re near Sherman Oaks and need Owens Corning work, call and we’ll let you know when we can get out. Our full Sherman Oaks service area covers 91403, 91413, 91423, and 91495.
Book Your Owens Corning Service in Sherman Oaks Today
If your Owens Corning roof is showing sun damage, wind lift, or a fresh leak, don’t wait for the next storm to find the weak spot. Call (866) 705-2978 to schedule your free Owens Corning roof estimate in Sherman Oaks. We’ll assess what’s actually going on and give you a straight answer.
Written by Ron Thibodeau, Owner at Marquis Roof Repair, serving Sherman Oaks and the San Fernando Valley. A roof done right the first time is the only version worth doing.