Owens Corning Roofing in San Fernando, CA

Owens Corning Roofing in San Fernando, CA | Marquis Roof Repair

Marquis Roof Repair provides independent Owens Corning roofing service across San Fernando, CA, covering everything from targeted leak repair to full reroofs with Duration and Oakridge shingles. The one thing that makes our Owens Corning work different here is that we know San Fernando’s pre-1970s housing stock often mixes steep shingle roofs with flat, low-slope additions, and that combination requires a specific approach to flashing, transitions, and Title 24 compliance. If you’re dealing with failing shingles or ponding on a flat section, call (866) 705-2978 for a free estimate.

Call (866) 705-2978

We’ve been installing and repairing Owens Corning shingles across the San Fernando Valley for over 15 years, so we know which product lines hold up under the east Valley’s brutal UV and thermal cycling. Our crews are trained on Owens Corning’s full system, from underlayment to hip and ridge, and we bring that focused expertise to every San Fernando roof we touch. This is not a side brand for us. It’s half the roofs we see in this city, and we treat it that seriously.

Learn more about our broader Owens Corning sales & service work across the region, or keep reading to see how this plays out block by block in San Fernando.

Why San Fernando Residents Choose Us for Owens Corning Service

Owens Corning shingles behave differently in San Fernando than they do in, say, a coastal city with marine layer mornings. Here, the roof surface bakes. Ron Thibodeau, our owner, spent two-plus decades doing roofing work across the Valley before planting Marquis in Burbank, and he’s the first to tell you that an east Valley roof with southern exposure ages faster than the same roof five miles west. That’s not marketing. That’s thermal cycling, and we’ve repaired enough UV-brittle Owens Corning installations in San Fernando to know exactly where the weak points are.

What you get when you call us is a roofer who already knows your housing stock. The 1950s and 1960s single-family homes that dominate San Fernando came out of an era when builders put shingles where the slope allowed and tar-and-gravel where it didn’t. Most Owens Corning work here involves both. We handle the transition correctly because we’ve corrected enough botched transitions to know what the city inspector will flag.

Common Owens Corning Roofing Problems We Solve in San Fernando

• UV-baked granule loss on south- and west-facing slopes. San Fernando’s dry season sun is punishing. Owens Corning shingles on these exposures lose granules, then the asphalt underneath starts to crack. We see this constantly on homes off Brand Boulevard and the older blocks near the civic core. By the time you’re sweeping granules out of your rain gutters, the shingles are usually brittle, not just worn.
• Nail pops and broken sealant strips from thermal expansion. Older Owens Corning three-tab installations, especially Supreme lines from decades past, expand and contract hard in San Fernando’s heat. Nail heads push up through the shingle. Sealant strips lose their grip. Then a Santa Ana wind gust finds an edge and lifts it. We re-secure what’s salvageable and replace what isn’t.
• Blistering on improperly shingled low-slope sections. A lot of San Fernando additions and garage roofs were framed at a pitch that should never have received shingles. When Owens Corning shingles get installed over a low-slope section, air and moisture trapped beneath the shingle cause blisters. The fix is rarely more shingles. It’s a proper transition to a membrane system rated for that pitch.
• Wind uplift on Owens Corning Supreme without proper starter strip. The original Supreme shingles on San Fernando’s post-WWII homes often lack the starter strips and edge cementing that today’s installation standards require. When the winds come through the passes, those edges lift. We see it on whole blocks of 1950s tract homes after a windy stretch.
• Ponding at the shingle-to-flat transition. This is the most San Fernando problem on the list. When the flat membrane section drains into the shingled section, poor transition flashing sends water under the shingles. Repeated patching by previous owners makes it worse. We cut out the failed area and rebuild the transition properly with Owens Corning-compatible flashing.

Owens Corning Service in San Fernando: What Local Conditions Mean for Your Equipment

Here’s something you won’t read on a generic Owens Corning page. San Fernando’s pre-1970s tract homes often have low-slope or flat roof sections originally covered with tar-and-gravel or modified bitumen, so Owens Corning shingle replacements frequently require a seamless transition to a cool-roof rated flat membrane to pass the city’s Title 24 and seismic retrofit checks. Contractors who spend most of their days in newer Valley communities don’t bump into this, because the stock there is pitched and newer. In San Fernando, it’s not an edge case. It’s a routine part of the job. We plan for the inspection reality from the first estimate, not after the old roof is already torn off.

We ran into this on a 1950s bungalow near the civic core not long ago. The original low-slope rear addition was covered in sun-baked tar-and-gravel that had been patched repeatedly, while the main pitched roof still had the original Owens Corning Supreme shingles with severe granule loss and brittle cracks. We removed the failed flat section, installed a Title 24-compliant modified bitumen membrane, and replaced the pitched roof with Owens Corning Duration shingles, tying in new flashing at the transition and bringing the seismic strapping up to code. That’s what a proper Owens Corning service in Shadow Hills or San Fernando looks like. Not just shingles. The whole roof system, done to the standard the city actually enforces.

Owens Corning Models & Products We Service in San Fernando

We install and repair the Owens Corning lines most common in San Fernando: Oakridge for a solid mid-tier performer that handles Valley sun well, Duration for homeowners who want the SureNail strip and better wind resistance, Supreme for the older three-tab installations still on many original roofs here, and WeatherGuard where it’s been applied over low-slope sections. For repairs, we use Owens Corning OEM shingles and accessories to maintain system integrity, and quality aftermarket underlayments and sealants where they meet or exceed OEM specs. We keep common Owens Corning colors and accessory parts stocked locally so Owens Corning service in Van Nuys and San Fernando repairs don’t wait on a distributor run.

Owens Corning Shingle Replacement, Leak Repair, and Full Roof Replacement in San Fernando

Our Owens Corning work in San Fernando splits into three services. Shingle replacement is for isolated damage, whether it’s wind-lifted edges, cracked shingles from sun damage, or nail pops that need to be re-driven and sealed. Leak repair is diagnostic work first. Ron built his reputation on finding the actual source of a leak, not just sealing the water stain on the ceiling. In San Fernando, that often means checking the flat-to-pitched transition before touching a shingle. Full roof replacement is what we recommend when granule loss is widespread, shingles are brittle, or the underlying decking has been wet long enough to soften. For most Owens Corning roofs showing moderate wear, targeted San Fernando Roof Repair work can extend life. But once the shingles snap when bent rather than flex, a full replacement is the honest recommendation. We won’t suggest a reroof when a precise repair will hold.

Owens Corning Service Pricing in San Fernando

FAQs – Owens Corning Roofing in San Fernando

My San Fernando home has a flat roof with Owens Corning shingles on the pitched parts. Can you match the shingles and fix the flat area?
Yes. That’s the exact combination we work on most in San Fernando. We’ll match your existing Owens Corning shingle line and color on the pitched sections, then replace or repair the flat area with a Title 24-compliant membrane, tying the two together with proper transition flashing. Call (866) 705-2978 for an exact quote.

How do I know if my Owens Corning shingles are failing from sun damage or just normal wear?
Sun damage shows up as granule loss concentrated on south- and west-facing slopes, along with cracks that run across the shingle rather than with the grain. Normal wear is more even across the roof. If you’re seeing bare asphalt patches or shingles that snap when bent, that’s UV degradation, and it’s common in San Fernando. We’ll tell you honestly during an inspection whether repair or replacement makes sense.

Do you use Owens Corning OEM parts for repairs or aftermarket?
We use Owens Corning OEM shingles and accessories for replacements to keep the roof as one consistent system. For underlayments and sealants, we use quality aftermarket materials where they meet or exceed OEM specs. We’ll walk you through exactly what goes on your roof and why.

Will replacing my Owens Corning roof trigger a city inspection and cool-roof requirement in San Fernando?
Very likely, yes. A reroof in San Fernando goes through the city, and if you’re replacing over a low-slope or flat section, Title 24 cool-roof standards apply. We handle the permitting and the inspection-ready details so you’re not surprised mid-project. That’s been part of our San Fernando reroofs for years.

Can you repair wind damage on Owens Corning Supreme shingles without a full replacement?
It depends on the shingle condition. If the tabs lifted but the shingles still flex without cracking, we can re-secure and cement the edges. If the shingles are already brittle from San Fernando sun, re-cementing them is a temporary fix at best, and we’ll tell you that straight. Call

Service Areas Near San Fernando

We serve San Fernando from our base in Burbank, with regular work in Universal City, North Hollywood, Glendale, Tujunga, and Studio City. If you’re in Owens Corning service in Century City or Owens Corning service in North Hills, we cover those areas too. For the full picture, see our San Fernando service area page.

Book Your Owens Corning Service in San Fernando Today

If your Owens Corning roof is showing its age under the San Fernando sun, call (866) 705-2978 for a free estimate. We’ll walk the roof with you, point out what’s failing and what’s holding, and give you a written line-item quote before any work starts. A roof done right the first time is the only version worth doing.

Written by Ron Thibodeau, Owner at Marquis Roof Repair, serving San Fernando and the San Fernando Valley.