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 Alhambra, CA | Hollywood Roofing Co
We provide independent Owens Corning roofing service across Alhambra, from tear-offs on 1920s Spanish-tile homes near Alhambra Park to Owens Corning repair in East San Gabriel on 91801 flats. What makes our Owens Corning work here different is that we’ve spent years diagnosing the specific failure patterns of their Duration and Oakridge lines in this exact climate: months of San Gabriel Valley UV followed by concentrated winter storms. If your Owens Corning roof is leaking or shedding granules, call (833) 589-7971 for a straight answer and a free estimate.
We’re an independent contractor, not affiliated with, authorized by, or endorsed by Owens Corning. That matters because our recommendation comes from what your Alhambra roof actually needs, not a brand mandate. Roland Vega grew up in Los Feliz and learned the trade at Los Angeles Trade-Technical College, spending nearly three decades on roofs across the San Gabriel Valley. He’s pulled enough failed Owens Corning underlayment out of Alhambra attics to know exactly what’s happening under your tile, and he brings that same expertise to Owens Corning service in San Gabriel.
Why Alhambra Residents Choose Us for Owens Corning Service
Owens Corning products have been going onto Alhambra roofs for generations. The 1950s and 60s tract homes along Main and Valley got Oakridge architectural shingles. The 1920s through 40s Spanish Colonial Revival homes near Alhambra Park got clay tile laid over Owens Corning felt underlayment. And the post-1990s re-roofs, especially the apartment buildings scattered through 91801 and 91802, got Duration shingles. We’ve worked on all of them.
What homeowners actually need is someone who knows these product lines well enough to tell when a shingle has failed versus when the underlayment beneath is gone. That’s the line we walk on every inspection in Alhambra. We use genuine Owens Corning shingle bundles and OC-approved underlayments when a repair requires the same profile so color and wind ratings stay consistent. When they don’t, we say so. Owens Corning sales & service is one part of our broader work across seven leading roofing brands, which means our sizing and material guidance isn’t tied to a single supplier’s inventory.
Styles & brands we work with






Common Owens Corning Roofing Problems We Solve in Alhambra
- Baked-out Oakridge and Supreme 3-tab shingles from the 1990s and 2000s. Decades of San Gabriel Valley sun degrades the asphalt and the seal-tab adhesive. Granule loss shows in gutters after the first rain. The leak only appears when winter rain drives sideways. We see this constantly on 1950s – 80s tract homes and rear additions along Main and Valley in the 91801 flats.
- Original Owens Corning felt turned to dust beneath clay tile. Sixty to eighty years of heat cycling breaks down tar-paper underlayment to powder. Water travels far from any missing tile. We’ve found ceiling stains in bedrooms directly under intact barrel tile, which is the signature of failed underlayment, not cracked tile.
- Santa Ana wind damage to Duration Storm tabs and ridge caps. Bungalows facing the open valley in 91896 get hit with wind bursts that lift unsealed shingle tabs and peel ridge caps. The failure is usually localized, but it opens the roof decking to the next rain event.
- Failed flashing and vent boot collars on low-pitch Spanish roofs. UV-hardened sealant around plumbing vents and chimneys cracks open. Water pools on the aged underlayment and seeps inside. The tile above looks fine. The flashing below is the culprit.
- Ponding water on flat built-up roofs over rear additions. Many Alhambra bungalows have a flat-roof rear addition that collects water after winter storms. If the original OC felt or modified bitumen has aged out, the ponding becomes an interior stain within a day or two.
Owens Corning Service in Alhambra: What Local Conditions Mean for Your Roof
After every serious winter storm, roofers in Alhambra get a wave of calls from the 1920s – 40s Spanish-tile homes near Alhambra Park and the 91801 flats. The homeowner sees a water stain on an interior ceiling, often in a bedroom or hallway nowhere near the roof’s edge, and can’t find a single cracked barrel tile from the outside. The tile is often still perfectly serviceable. What’s failed is the original Owens Corning felt underlayment beneath it, which after 60 to 80 years has disintegrated into dust over the wood sheathing. Rain gets through the tile’s gaps, hits that dust instead of a water barrier, and travels along the sheathing until it finds a seam or a nail hole. The stain shows up rooms away. This is a distinctly Alhambra pattern. In neighboring foothill cities where shingle roofs dominate, the diagnosis is usually a torn shingle or failed flashing, unlike the Owens Corning repair in South Pasadena we often handle. Here, with the city’s dense stock of pre-1960 Spanish Colonial Revival and bungalow homes, the real question is almost always what’s under the tile. We’ve handled this same diagnosis across multiple 91801 flats where the tile looked untouched but the felt beneath had returned to powder.
Owens Corning Models & Products We Service in Alhambra
We work on the full range of Owens Corning roofing products common across Alhambra. That includes Oakridge architectural shingles on 1950s – 80s tract homes and apartment re-roofs along Main and Valley, Duration and Duration Storm shingles on post-1990s single-family re-roofs, Supreme 3-tab shingles on older garages and rear additions, and Owens Corning clay-tile and tile underlayment systems like Titanium PSU and RhinoRoof-style synthetic underlayments on Spanish Colonial Revival homes.
For repairs, we use genuine Owens Corning shingle bundles when the profile and wind rating need to match the existing roof. For tile underlayment replacement, we use synthetic underlayment rather than felt, whether or not it carries the OC label. The synthetic holds up better under Alhambra’s UV load and handles the concentrated winter rain more reliably.
See the difference
Before
After
Before
After
Before
AfterOwens Corning Service Pricing in Alhambra
Every Alhambra roof has a different cost profile, but the biggest driver is whether we’re doing a spot repair or addressing failed underlayment across a wider span.
- Shingle repair (ridge, valley, or flashing): typically walks in the $400 – $900 range depending on access and the amount of shingle area involved.
- Tile roof repair with flashing replacement: usually $500 – $1,200 when we’re re-setting a run of tile and replacing a vent boot or chimney flashing.
- Tile underlayment replacement (tear-off, synthetic underlayment, re-set tile): runs $8 – $14 per square foot for the underlayment area, with rotted decking replacement adding $4 – $7 per square foot.
Our estimates are free and the quote is a line item, not a ballpark. Call (833) 589-7971 to get a real number before you decide anything.
Serving Alhambra, CA — Our Local Coverage Area
We’re based in the Alhambra 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 Alhambra
If the clay tiles themselves are intact, we often replace only the underlayment and any rotted decking, then re-set the original tile. A full tear-off and underlayment replacement is usually the cheaper long-term call once the original OC felt has disintegrated across a large area. Call (833) 589-7971 for an inspection that tells you which path your roof actually needs.
It’s a San Gabriel Valley problem. Twenty years of UV exposure degrades the asphalt and wears the granule surface on any shingle. Oakridge shingles from the 1990s and 2000s are hitting that point in Alhambra right now, especially on south-facing slopes and roofs with limited ventilation. Call (833) 589-7971 and we’ll tell you whether you need spot repair or a full re-shingle.
Because the tile isn’t the leak source. The original Owens Corning felt underlayment beneath the tile has aged out and disintegrated, and water travels along the sheathing until it finds an interior seam. The stain shows up far from the entry point. This is the single most common call we get from pre-1960 Spanish Colonial Revival homes in Alhambra.
If the seal-tab adhesive has baked out from UV exposure, high winds can lift unsealed tabs and ridge caps. Homes in 91896 that face the open valley are more exposed. The fix is usually localized: re-sealing the tabs, replacing the ridge cap, and checking the nailing pattern. Call (833) 589-7971 and we’ll check the windward side before the next Santa Ana hits.
It matters because we’re not trying to fit your roof into a single brand’s product line. Many Alhambra homes have Owens Corning shingles on the main house and a different brand on a rear addition or garage. We work with all seven leading brands, so we match the existing profile rather than forcing a replacement brand where it doesn’t belong. Call (833) 589-7971 to get a straight answer about your specific roof.
Service Areas Near Alhambra
We serve Alhambra and the surrounding San Gabriel Valley communities, including the 91896 and 91801 ZIP codes. We also provide Owens Corning service in Bell for homeowners with similar 1940s – 60s housing stock, and Owens Corning service in Commerce for the shingle and tile roofs common across that city’s mix of older homes and apartment buildings. We cover Universal City, Silver Lake, Echo Park, Beverly Hills, Glendale, and Studio City as part of our broader Alhambra service area.
Book Your Owens Corning Service in Alhambra Today
A roof doesn’t ask for much – just that you pay attention before it has to ask loudly.
If your Owens Corning shingles are shedding granules, your ridge caps are lifting, or you’ve got a ceiling stain you can’t explain, call us. We’ll inspect, diagnose, and give you a line-item quote so you know exactly what’s going on up there. Call (833) 589-7971 to schedule your free estimate.
Written by Roland Vega, Owner at Hollywood Roofing Co, serving Alhambra and the San Gabriel Valley.