Owens Corning
Architectural shingles
Metal roofing
Tile roofing
GAF
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Owens Corning Roofing in Los Angeles, CA | Mercer Roofing Co Los Angeles
Roof Repair in Los Angeles with Owens Corning means repairing and installing shingles that have to survive everything from Santa Ana wind gusts to months of brutal UV exposure. We’re an independent Owens Corning service provider, not a factory-authorized dealer, which means we pair genuine Owens Corning shingles with the right underlayment and flashing for Los Angeles-specific code and weather challenges. Call (213) 521-8272 for a written estimate before any work starts.
Why Los Angeles Residents Choose Us for Owens Corning Service
Grant Whitlock, our owner, trained at Los Angeles Trade-Technical College and has spent the better part of two decades working on Owens Corning roofs across the LA basin. That includes flat torch-down decks in the Valley and clay tile on hillside bungalows in Silver Lake. We know which Owens Corning shingle lines hold up on a south-facing slope in Van Nuys and which ones struggle with the thermal swings up in the foothills.
Every Mercer Roofing technician is background-checked, identity-verified, and arrives in a clean, marked uniform with a photo ID badge. We send the technician’s name and photo to you before they knock on the door. That’s the Threshold Verified standard we’re held to on every visit. When you call, a live person answers, 24/7. No voicemail maze, no call-back form.
We’ve worked extensively on Owens Corning sales & service across Southern California, and we know the product lines well enough to tell you honestly when a repair will hold and when it’s time to re-roof. We’d rather talk you out of spending money you don’t need to spend than close a job that isn’t the right call.
Styles & brands we work with
Common Owens Corning Roofing Problems We Solve in Los Angeles
- Sun-scorched and brittle asphalt on older Oakridge or 3-tab shingles. South- and west-facing slopes in the San Fernando Valley take relentless direct sun from May through October. Granule loss shows up in your gutters first, then cracking follows. We see this constantly on homes built in the 1980s and 1990s where the original Owens Corning shingles have simply baked past their service life.
- Wind-lifted or missing shingle tabs after Santa Ana events. The problem usually traces back to nail placement, not the shingle itself. On many 1950s LA homes, the original decking is softer cedar or plywood that doesn’t hold standard roofing nails when the wind gets underneath. We re-fasten with longer ring-shank fasteners and replace only the affected courses when the surrounding shingles are still sound.
- Valley and flashing leaks on Duration shingle roofs. Los Angeles swings from 40°F winter mornings to 100°F summer afternoons, and that thermal expansion and contraction dries out sealant along valleys and sidewalls. Once the sealant separates, water finds its way under the shingle. We replace the flashing and use a sealant rated for this kind of temperature range.
- Curling and blow-off on lower-grade Supreme shingles on hillside exposures. Hillside homes in areas like Mount Washington or Baldwin Hills get gusting that gets under the shingle edge. Supreme shingles are a budget line, and on steep pitches with wind exposure, they curl at the corners first. We often recommend upgrading to Duration shingles when a repair reaches the point of diminishing returns.
- Granule loss and surface cracking on Woodcrest shingles near the coast. Salt air in neighborhoods like San Pedro and Wilmington accelerates oxidation on asphalt shingles. Woodcrest has a thicker profile, but the salt and fog still take their toll on the sealant strips. Homes within two miles of the water usually need sealant checked more often.
Owens Corning Service in Los Angeles: What Local Conditions Mean for Your Roof
Los Angeles is the only major U.S. city where Owens Corning shingles are routinely specified for both the mild, salty coast at San Pedro and alpine snow-load zones in the San Gabriel Mountains. Sometimes on the same crew’s schedule in a single week. That forces real material changes: coastal jobs need corrosion-resistant fasteners and sealants that won’t break down in salt fog, while mountain jobs above 3,000 feet need longer nails, ice-and-water shield underlayment, and shingles rated for snow load. A neighboring city like Pasadena never sees that split. Neither does a national Owens Corning page. If your roofer treats every Los Angeles job the same, they’re guessing. We don’t.
Owens Corning Models & Products We Service in Los Angeles
We work on the full Owens Corning residential line: Oakridge, Duration Series including TruDefinition Duration, Berkshire, Supreme, and Woodcrest. We use genuine Owens Corning shingles and accessories when color matching or warranty documentation matters. But we’re not shy about pairing them with a stronger, code-rated underlayment or corrosion-resistant flashing from a quality aftermarket manufacturer, especially in fire-prone hills where standard roll goods may not satisfy local Chapter 7A requirements. We keep common Owens Corning colors and accessory stock in our Los Angeles inventory, which means most repairs don’t wait on a special order.
See the difference
Before
After
Before
After
Before
AfterOwens Corning Service Pricing in Los Angeles
What you’ll pay depends on the scope, the shingle line, and your roof’s pitch and accessibility. Here’s what homeowners across Los Angeles can generally expect:
- Shingle replacement (spot repair, 10 – 20 shingles): $350 – $750, including sealant and fasteners.
- Leak repair with flashing work (valley, sidewall, or chimney): $450 – $1,100, depending on how much flashing needs to be cut out and replaced.
- Tile underlayment replacement under Owens Corning shingles or adjacent tile (per 100 sq ft): $900 – $1,600, including tear-off, new underlayment, and re-installation.
- Full Owens Corning Duration re-roof on a typical 1,800 sq ft LA home: $14,000 – $22,000, depending on decking condition, pitch, and whether we’re pulling permits.
The free estimate includes a written line-item quote before any work starts. No change orders, no surprises on the invoice. Every repair comes with a written guarantee and a free second visit if the repair fails within the 365-Day Done Right Promise window. Call (213) 521-8272 for exact numbers on your roof.
Serving Los Angeles, CA - Our Local Coverage Area
We’re a Roofing Company in Los Angeles that knows 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 Los Angeles
Because the wind rating assumes proper fastening. On many older Los Angeles homes the decking is softer than what the shingle manufacturer specifies, and installers used standard nails instead of the longer ring-shank fasteners now required by local inspectors. The shingle isn’t failing. The fastening system is. We verify nail type, length, and placement on every wind-damage repair. Call (213) 521-8272 and we’ll tell you what’s actually holding your shingles on.
Yes, but your underlayment and flashing choices matter more than your shingle choice. Hollywood Hills homes fall under Chapter 7A wildfire requirements, and Owens Corning standard roll goods may not satisfy them. We pair genuine Owens Corning shingles with a fire-rated underlayment and corrosion-resistant flashing that meets the local inspector’s checklist. The shingle itself is only half the compliance picture.
Yes, original 1920s Owens Corning clay tiles aren’t manufactured anymore, and you won’t find vintage matches. When one cracks on a hillside bungalow in Silver Lake or Echo Park, we color-match a modern tile from a current manufacturer rather than trying to source a vintage piece. The color match on a modern tile is typically closer than a weathered reclaimed tile, and the modern tile will outlast the originals. We’ll pull a few undamaged tiles from a less visible slope to use as donors if the match needs to be perfect on the street-facing side.
The fog isn’t the problem. It’s the salt and the constant moisture cycle. Homes within about two miles of the water get salt deposition on the shingle surface, which accelerates sealant-strip oxidation. The shingles don’t necessarily wear out faster, but the sealant loses its grip sooner, which means wind-driven rain finds more entry points. On coastal homes we check sealant condition at every service visit and recommend a sealant refresh before the winter rains start. Call (213) 521-8272 if you’re within sight of the water and haven’t had your roof looked at in five years.
Because the underlayment is the waterproofing layer, not the shingles. Shingles shed water. Underlayment stops water that gets past the shingles. In Los Angeles, years of thermal cycling breaks down even quality underlayment, and once it’s compromised, the next leak is a matter of time. We recently pulled Owens Corning Oakridge shingles off a 1948 Silver Lake home that looked fine from the curb, but the underlayment underneath had turned to paper. The homeowner had already patched the leak twice. The real fix was replacing the underlayment. That’s a repair that costs $900 – $1,600 per 100 square feet, with a written price before we start.
Service Areas Near Los Angeles
We serve Los Angeles and the surrounding communities, including Los Angeles service area coverage that stretches from the Valley to the coast. If you’re in Owens Corning service in Burbank or Owens Corning service in South Gate, we can usually get a technician out the same week. We also cover Lynwood, Gardena, and Bell Gardens.
Book Your Owens Corning Service in Los Angeles Today
A roof should be the last thing on your mind, let’s keep it that way. Call (213) 521-8272 and we’ll schedule your free Owens Corning roof estimate with a written line-item price before any work begins. A live person answers, and the technician’s name and photo arrive before they do.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving Los Angeles since 2000.