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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 Koreatown, CA | Marquis Roof Repair
Marquis Roof Repair provides independent Owens Corning roofing service across Koreatown’s 90005 zip code, from shingle replacement on surviving bungalows to our Roof Repair in Koreatown flashing work where pitched OC shingle roofs meet flat membrane systems. Koreatown is a flat-roof district, so Owens Corning shingle work here usually means small, steep pitches tucked between low-rise apartment flats, and the transition flashing between the two roof types fails first. We’re independent Owens Corning installers, not factory-authorized, and we say that plainly. Call (866) 705-2978 for a free estimate.
Why Koreatown Residents Choose Us for Owens Corning Service
Most Koreatown roofing contractors live and breathe flat membranes, because that’s what covers the bulk of 90005. When a homeowner with an Owens Corning Oakridge or Duration shingle roof calls around, they often hear vague answers about pitched work. We’re different. Ron Thibodeau, our owner, spent two-plus decades doing roofing across the San Fernando Valley before planting Marquis Roof Repair in Burbank, and he learned early, working alongside his uncle’s general contracting crew, that good work speaks for itself and shortcuts always show up eventually. We also offer Owens Corning repair in Hollywood for nearby residents. That’s the standard we bring to every Koreatown OC shingle roof we touch. We match Owens Corning shingles and accessory products to the actual system on the roof, and when a low-slope detail calls for a better aftermarket underlayment, we use it and tell you why. From first inspection to final shingle, the right material for your roof is the only thing we’ll recommend.
Styles & brands we work with
Common Owens Corning Roofing Problems We Solve in Koreatown
- Seal-strip thermal cracking on Oakridge and Duration shingles. Koreatown’s hot, dry summers bake small pitched roofs for months at a stretch. The adhesive seal strips on Owens Corning architectural shingles cure hard, then crack, and when Santa Ana winds roll through, tabs lift. We see this constantly on the surviving bungalows scattered through 90005.
- Underlayment and accessory flashing tape breakdown around parapets and roof hatches. Koreatown’s 1920s-to-1990s low-rise stock frequently has flat portions that were shingled-over or underlayment-wrapped. Owens Corning underlayment and flashing tape break down quickly under UV at parapet edges and hatch penetrations, and the rare but intense winter rain wicks straight into decking.
- Duration shingle sagging over old wood-frame decking. Many Koreatown bungalows with pitched roofs sit on 1920s-1950s wood decking that’s from the building’s original construction. Once that decking delaminates, Duration shingles sag and crack at panel joints. The shingle looks fine from the ground until you walk it.
- Valley and vent-boot failures from rooftop HVAC condensate. Koreatown’s flat-roof buildings pack rooftop HVAC units and water heaters right next to any adjoining pitched roof. When condensate discharge keeps the surrounding Owens Corning shingle saturated year-round, valley details and vent boots fail early.
- Transition flashing corrosion where pitched OC shingle meets flat membrane. This is the Koreatown signature problem. The pitched shingle roof on a bungalow sits beside a flat built-up or TPO membrane roof, and the flashing at that junction corrodes and leaks first. We’ll explain how we fix it below.
Owens Corning Service in Koreatown: What Local Conditions Mean for Your Equipment
Here’s the thing most roofing pages won’t tell you about Koreatown. In 90005, the pitched Owens Corning shingle work we see is almost always on the small surviving single-family bungalows tucked between low-rise apartment flats. The OC shingle roof is a steep, hard-to-access slice sitting right beside a flat membrane roof, and the two meet at a transition flashing that leaks first, not the shingle field. On a bungalow off Western Avenue, our crew found Owens Corning Oakridge shingles lifting along a valley where the pitched roof tied into the neighboring flat membrane. The transition flashing had corroded and the decking at the joint was soft. We replaced the rotted decking, rebuilt the valley flashing, and re-shingled with matched Oakridge, hauling everything in through a rear alley because no truck could reach the roof. That’s the reality of Koreatown OC work: tight alley access, tenant-occupied units, and a leak that starts where two roof systems meet, not in the open shingle field. A roof done right the first time is the only version worth doing.
Owens Corning Models & Products We Service in Koreatown
We service the full Owens Corning asphalt shingle lineup you’ll find on Koreatown pitched roofs: Oakridge architectural shingles, Duration shingles, and Supreme plain shingles, including TruDefinition granite and onyx color lines. Our parts approach is simple. We match Owens Corning shingles and accessory products to the actual system on the roof, and we use quality aftermarket underlayments where the OEM line doesn’t suit a low-slope detail. We stock common OC shingle colors and accessory flashing locally so Koreatown turnaround stays tight, and for less common TruDefinition color lots, we order direct and keep you informed on timing.
See the difference
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After
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Before
AfterOwens Corning Service Pricing in Koreatown
Owens Corning shingle repair in Koreatown typically runs $180 to $340 for isolated shingle replacement and small flashing repairs, while larger transition-flashing rebuilds where the pitched roof meets the flat membrane can hit $800 to $1,600 depending on decking condition. Full re-shingles of small Koreatown bungalow roofs generally land between $6,000 and $12,000, with square footage, tear-off, and decking replacement driving the number. Every free estimate includes a written line-item scope, and if the decking under your OC shingle is shot, we tell you straight. Call (866) 705-2978 for an exact quote, estimates are free.
Serving Koreatown, CA — Our Local Coverage Area
We’re based in the Koreatown 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 Koreatown
Yes, and we do it regularly. The key is rebuilding the transition flashing where the pitched OC shingle roof meets the flat membrane, because that junction is where Koreatown leaks start. We’ll strip back the old flashing, inspect and replace rotted decking, install new transition metal, and re-shingle with matched Owens Corning. Call (866) 705-2978 and we’ll walk the roof first.
It depends on the decking. Curling tabs are a UV and seal-strip issue, and if the underlying decking is sound, targeted shingle replacement usually holds. If the roof is 1920s-1950s wood frame and the decking has delaminated, patch work only buys time. We investigate before we recommend, so call (866) 705-2978 and we’ll tell you the honest answer.
Usually yes, and we coordinate that carefully. Most 90005 flat buildings and bungalows require access through a rear alley, exterior stairs, or a roof hatch, often passing through tenant-occupied spaces. We schedule with building owners or property managers in advance and keep disruption minimal. Call (866) 705-2978 to discuss your building’s access situation.
Koreatown’s rain is rare but intense, and it arrives after months of dry UV exposure. When failed flashing at parapets, hatches, or the pitched-to-flat transition has been wicking moisture slowly, the first big storm turns it into a visible leak. By then, decking damage is often already underway. If you suspect flashing failure, call (866) 705-2978 before the next rain system, estimates are free.
Yes. Condensate discharge from HVAC units and water-heater equipment keeps surrounding shingles saturated for months at a time, which shortens the life of both the shingle and the accessory flashing around valleys and vent boots. We rebuild those details with correct slope and drainage so water doesn’t sit against the OC shingle. Call (866) 705-2978 for an inspection.
Service Areas Near Koreatown
Our Koreatown service area covers the full 90005 zip, and we regularly serve nearby neighborhoods including Burbank, Glendale, North Hollywood, Studio City, and Universal City. For Owens Corning sales & service across the region, or Owens Corning service in Beverly Hills and Owens Corning service in Los Angeles, we’re a phone call away.
Book Your Owens Corning Service in Koreatown Today
Call (866) 705-2978 to schedule your free Owens Corning roofing estimate in Koreatown or to inquire about Echo Park Owens Corning service. We’ll inspect your pitched roof, flat membrane, and the transition between them, then give you a written scope with no pressure. Seven manufacturer lines, one point of contact, built to the Marquis standard.
Written by Ron Thibodeau, Owner at Marquis Roof Repair, serving Koreatown and the greater Los Angeles area.