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 Woodland Hills, CA | Mercer Roofing Co Woodland Hills
Mercer Roofing Co Woodland Hills provides independent Owens Corning roofing service across Woodland Hills, CA. We install, repair, and replace Owens Corning shingle roofs, and the thing that sets our work apart here is simple: we know exactly what 110°F Valley heat does to Duration and Oakridge shingles, because we see it every week. If you need a straight answer about your Owens Corning roof, call (341) 217-2677 for a free estimate.
We are not an Owens Corning authorized dealer, and we do not pretend to be. What we are is a local Woodland Hills roofing crew that has worked on hundreds of Owens Corning roofs in this specific climate, from the flats of Warner Center to the hillside streets south of Ventura Boulevard. For more on our full Owens Corning sales & service capabilities, read on. If you are checking whether we cover your part of town, see our Woodland Hills service area page.
Why Woodland Hills Residents Choose Us for Owens Corning Service
Grant Whitlock, our owner, grew up in Los Angeles and learned the trade through the construction technology program at Los Angeles Trade-Technical College. He has been handling Roof Repair - Woodland Hills for well over a decade, including jobs up in the Warner Center corridor where the summer heat alone will tell you everything you need to know about whether a flat roof was installed properly. That experience matters when you are dealing with Owens Corning shingles that have been baking in Valley sun for ten or fifteen years.
We carry genuine Owens Corning bundles for visible replacements so colors and dimensions match, especially on Duration Designer shades that are hard to match from memory. For underlayment, flashing, and vent boots, we select quality aftermarket materials that meet or exceed code and work with Owens Corning nailing specs. We are independent, which means our only incentive is the honest fix. Every job starts with a written price before any work begins, and every technician who arrives at your door is background-checked, uniformed, and carrying a photo ID badge under the Threshold Verified standard.
Styles & brands we work with
Common Owens Corning Roofing Problems We Solve in Woodland Hills
- Premature granule loss on Duration shingles. Woodland Hills routinely exceeds 110°F in summer, and that sustained UV exposure thins the protective granule layer faster than manufacturers’ baseline expectations. You will see granules collecting in gutters and bald patches forming on south-facing slopes. We repair or replace affected sections before the underlying asphalt starts degrading.
- Thermal splitting along shingle edges on Oakridge roofs. The Valley’s wide day-to-night temperature swings cause repeated expansion and contraction. Oakridge shingles are solid, but after enough cycles the edges can split. That is a common call for us in mid-century ranch neighborhoods where roofs are older and the shingles have seen twenty summers.
- Sealant strip failure and wind uplift. Heat degrades the adhesive sealant that holds shingle tabs down. When a Santa Ana event rolls through Woodland Hills, we see entire tabs lifted or blown off on south-facing slopes. The hillside streets south of Ventura Boulevard get hit hardest because the wind funnels through the canyons.
- Nail pull-through on older decks. In mid-century ranch homes around Woodland Hills, the roof decking has often dried out after decades of heat. The wood loses holding power, nails back out, and shingles loosen. We replace the decking section and re-fasten with proper fastener density.
- Transition cracking between asphalt shingles and clay tile. Many hillside homes in Woodland Hills pair Owens Corning shingle fields with clay tile hips and ridges. After a heat wave, the differential expansion between the flexible asphalt and the rigid tile creates stress cracks at the transition points. We repair these almost weekly here, but rarely in flatter neighboring areas like Canoga Park.
Owens Corning Service in Woodland Hills: What Local Conditions Mean for Your Equipment
Here is something you will not read on a generic Owens Corning page. Woodland Hills’ hillside communities south of Ventura Boulevard have a high concentration of Owens Corning Duration shingles paired with clay tile accents. The problem is not the products individually; it is what happens when they meet. After a stretch of 110°F days, the asphalt shingle field expands and contracts differently than the rigid tile hips and ridges above it. That differential movement creates stress cracks at the transition points, the exact spot where shingles meet tile. Water gets in, and the homeowner often does not notice until the first winter rain. We see this failure mode almost weekly in Woodland Hills, but rarely in neighboring flatland areas because those neighborhoods just do not have the same hillside housing stock with tile-and-shingle combinations. If your home sits south of Ventura Boulevard with a mixed-material roof, that transition detail is the first thing we inspect.
Owens Corning Models & Products We Service in Woodland Hills
We work on all the Owens Corning lines you are likely to find on Woodland Hills roofs: Duration Series shingles, Oakridge Series, TruDefinition Duration Designer Colors, and the Berkshire Collection on premium estate homes. When a visible section needs replacement, we use genuine Owens Corning bundles to keep the color and dimensional match exact. That matters most on Designer Colors, where a mismatched bundle sticks out from the street. We keep common Valley shades stocked locally, which means faster turnaround when you need a repair and do not want to wait on a distributor order.
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AfterOwens Corning Service Pricing in Woodland Hills
What should you budget? Here are the ranges we typically quote in Woodland Hills:
- Small spot repair (granule loss, a few lifted tabs): $350 to $750
- Section replacement (one slope, standard Duration or Oakridge): $1,200 to $3,400 depending on slope size and pitch
- Full re-roof on a typical 1,800 to 2,400 sq ft ranch: $14,000 to $24,000, with Berkshire or premium Designer Colors at the high end
- Decking replacement (added to any repair or re-roof): $2.50 to $4.00 per square foot, materials included
What drives the cost in Woodland Hills specifically? Roof pitch, accessibility on hillside lots, how much decking has deteriorated from heat, and whether you have a mixed tile-and-shingle roof that requires transition detailing. Every estimate we write is a fixed line-item price, in writing, before work starts. No change orders mid-job. Call (341) 217-2677 to schedule your free estimate.
Serving Woodland Hills, CA - Our Local Coverage Area
We’re a Roofing Company - Woodland Hills locals trust, and we 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 Woodland Hills
Yes. Poor attic ventilation traps heat under the deck, which raises shingle temperatures well above the already extreme ambient heat. That accelerates granule loss and sealant degradation on Duration shingles. We recommend checking your attic ventilation whenever we do a repair in Woodland Hills, because fixing the ventilation often extends the life of the shingles more than any patch job. Call (341) 217-2677 and we will assess it during your free estimate.
In most cases, yes. If the granule loss is localized and the shingle mat is still intact, we can replace the affected shingles with matching Owens Corning bundles. But if granule loss covers a large area or the shingles have begun to crack and split, patching becomes a short-term fix on a roof that is nearing end of life. We will tell you which situation you have and put the recommendation in writing.
Sometimes. Owens Corning changes and retires colors periodically. If your exact color is discontinued, we source the closest available match and can often blend replacements on less visible slopes. If the visible street-facing slope needs work, we will be straight with you about whether a patch will look right or whether a full slope replacement makes more sense.
They do, with one caveat. Code-compliant installation with proper nail placement and sealant activation handles most wind events. But on older roofs where the sealant strips have heat-degraded, Santa Ana gusts can lift tabs even on properly nailed shingles. That is why we re-activate or replace sealant strips during repairs on south-facing slopes in the hillside communities. Guaranteeing the fix against the next wind event is part of every repair we write.
Yes. Owens Corning shingles are rated for specific minimum slopes. On flat or very low-slope sections, which are common on mid-century Woodland Hills builds, shingles can trap water and fail prematurely. Those sections need membrane roofing, not shingles. We install and maintain both, and we will recommend the right material for each section of your roof rather than forcing one system across the whole thing.
Service Areas Near Woodland Hills
We serve Woodland Hills and the surrounding communities, including West Hills, Winnetka, Topanga, and Calabasas. If you are just over the county line, see our Owens Corning service in Simi Valley page. If you are west toward the Conejo Valley, check our Owens Corning service in Agoura Hills page.
Book Your Owens Corning Service in Woodland Hills Today
Last summer, our team replaced the south-facing roof deck on an Owens Corning Duration-equipped ranch home in the Carlton Terrace hills. The deck’s OSB had dried and split from repeated 115°F days, causing nail pull-through on the Duration shingles and a 4-foot section lifted by a Santa Ana gust. We removed the shingles, installed new CDX plywood with increased fastener density, and re-laid the original Duration shingles after cleaning and reactivating the sealant strips on undamaged pieces. That is the kind of detail we bring to every Owens Corning roof in Woodland Hills.
A roof should be the last thing you worry about. Let’s make sure it is. Call (341) 217-2677 today for your free estimate, and a live person will answer, not a voicemail.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Woodland Hills since 2000.