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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Why Van Nuys Homeowners Choose CertainTeed Roofing
We provide Van Nuys CertainTeed service as an independent roofing repair company, specializing in Landmark architectural shingles, Presidential Shake, Symphony synthetic slate, and Flintlastic SA low-slope systems. As an independent CertainTeed service provider – not an authorized dealer – we diagnose and repair based on what your roof actually needs, not what a manufacturer program tells us to sell. If you’re dealing with granule loss, seal-strip lift, or a low-slope leak on a CertainTeed roof in Van Nuys, call (866) 321-6172 for a straight diagnosis and a written estimate. No runaround, no brand steering – just a clear answer on repair versus replacement.
Rick Dominguez, who runs Van Nuys Roofing Co, grew up off Sepulveda Boulevard a few blocks from the old Van Nuys Municipal Airport. He learned roofing through the construction technology program at Los Angeles Valley College, where we also offer CertainTeed service in Valley Glen, then spent the better part of two decades on rooftops across the San Fernando Valley. That background matters when you’re dealing with a CertainTeed roof in Van Nuys heat. He’s seen how these products perform after years of 100-degree summers. He knows what fails, what holds, and what’s worth fixing versus tearing off.
Key Takeaways:
- We service all major CertainTeed product lines: Landmark, Presidential Shake, Symphony, XT 30/Highland Slate, and Flintlastic SA.
- We’re an independent CertainTeed service provider – no manufacturer authorization, and no pressure to sell one brand over another.
- Diagnosis comes first. We’ll tell you if a targeted repair carries the roof or if it’s time for a tear-off.
- Free estimates. Call (866) 321-6172.
Why Trust Van Nuys Roofing Co for Your CertainTeed Roofing?
Our crews work with CertainTeed products regularly – not occasionally, not as a side line. We know the Landmark line’s nailing requirements, the seal-strip activation temperature window, the underlayment pairing CertainTeed specs for their warranty, and how Presidential Shake responds to Valley UV the way a roofer who only touches one brand never will. When we walk a CertainTeed roof in Van Nuys, we read it for what it’s telling us: granule loss patterns, seal-strip adhesion, flashing transitions, ventilation adequacy. That’s the difference between a patch that holds and a guess that leaks again in February.
Rick has been known around Van Nuys for flat roof work and for being straight with people about what actually needs fixing versus what can wait another season. His signature line on a job site – “If it doesn’t need replacing, I’m not going to tell you it does” – isn’t a slogan. It’s how we run the company. That’s why homeowners who’ve been quoted full tear-offs by other roofers call us for a second opinion. Sometimes the roof really is shot. Sometimes two slopes, a ridge vent, and new flashing are what the house needs. We’ll tell you which one yours is.
We’re also not pushing one particular brand. We work with seven: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means when we recommend a CertainTeed repair or replacement, it’s because it’s the right move for your roof and your budget – not because we have inventory we need to move. For Van Nuys homeowners, that matters. You shouldn’t have to wonder if your roofer’s material recommendation is genuine or quota-driven.
Styles & brands we work with






Common CertainTeed Roofing Problems We Fix in Van Nuys
The Valley’s specific conditions – dry summer heat, UV intensity, occasional Santa Ana wind events, and the first heavy winter rain – stress CertainTeed roofs in predictable ways. Here’s what we see most often in Van Nuys:
- Landmark granule loss and curling on south- and west-facing slopes. When attic ventilation is insufficient, heat builds. Van Nuys roofs routinely bake at surface temperatures far above the ambient 100°F. That concentrated heat accelerates granule shedding on the sun-hit slopes and causes shingles to curl at the corners. The shingle isn’t defective – it’s being cooked. Ventilation fixes and targeted slope replacement are the answer, not always a full roof.
- Seal-strip adhesion failures on Landmark and Presidential Shake. CertainTeed’s seal strips need to activate properly during installation. If shingles were installed below the manufacturer’s temperature window, the strips never fully bond. The tabs lay there looking fine until a Santa Ana wind event comes through the Van Nuys basin and lifts entire courses. We’ve fixed this on roofs less than five years old. The repair is re-sealing the liftable courses and replacing the failed tabs – not a tear-off.
- Symphony synthetic slate cracking at fastener points. Symphony tiles look like slate but they don’t handle the same way. When the roof deck flexes or, more commonly, when roof traffic crosses the tiles without walk pads, they crack and delaminate at the fasteners. In Van Nuys, where tight lots mean people are on their roofs more than they’d like to admit (cleaning gutters, checking for rats, troubleshooting that one persistent vent), this is a real pattern.
- Flintlastic SA seam blisters and edge lift. Flintlastic is self-adhered modified bitumen for low-slope sections – common on the thousands of 1940s and 1950s stucco bungalows in Van Nuys that still carry their original low-slope roofs. If the laps weren’t rolled properly at installation, or if ponding water sits at poorly pitched transitions, the seams blister and the edges lift. Water finds the gap. It’s a repair we do constantly on pre-war and postwar tract homes.
- Flashing failures at stucco-to-roof transitions. The classic Van Nuys failure on older CertainTeed roofs isn’t always the shingle field – it’s the connection between a stucco parapet wall and the roof deck. After 60 years of Valley heat cycling, the stucco cracks, the flashing pulls loose, and the first big winter storm drives water straight into the ceiling. This is repair work, not replacement work, and it’s where our inspection-first approach saves you real money.
We got called out to a Van Nuys ranch house where the west-facing Landmark field had wind-lifted tabs along two courses after a Santa Ana event – the seal strips never fully bonded during a cool-weather install. Our crew re-sealed the liftable courses, replaced the failed tabs, swapped the cracked neoprene vent boots on the plumbing stacks, and added ridge ventilation to cut the attic heat that was cooking the shingle field. The homeowner got a watertight slope for a fraction of the tear-off they’d been quoted elsewhere.
CertainTeed Parts & Our Repair-vs-Replace Approach
When we’re matching an existing CertainTeed field – say, a Landmark color like Moire Black or Georgetown Gray – we install genuine CertainTeed shingles and accessories. The starter strips, hip-and-ridge caps, and underlayment need to match what’s there, both for the profile continuity and so any remaining manufacturer warranty stays intact. Mixing in off-brand field shingles is a shortcut that voids warranties and always looks wrong within two years of UV exposure. We don’t do it.
That said, we’re not religious about OEM parts across the board. Flashing, vent boots, and fasteners are different. We’ll use quality aftermarket flashing and neoprene vent boots when they outperform and outlast the OEM equivalent. A cracked vent boot on a plumbing stack is usually the weak link long before the shingle itself fails. Put a real boot on it once and you don’t touch it for 20 years.
Repair versus replace comes down to what the roof is telling us. A Landmark slope with granule loss but intact seals and a stable deck might have five to seven good years left – a targeted repair is honest. A curling, seal-failed slope with water intrusion into the sheathing needs a tear-off. We’ll give you the straight answer either way. Call (866) 321-6172 and we’ll come look.
Our CertainTeed Service Process – Step by Step
Here’s how a CertainTeed service call works with us:
- 1
Diagnosis. We walk the roof, inspect the shingle field, the seal strips, the flashing, the penetrations, and the ventilation. For low-slope CertainTeed systems (Flintlastic), we check seam integrity, ponding zones, and edge details. Rick’s flat-roof background puts him in a different position than most Valley roofers when it comes to reading these systems.
- 2
Repair or install. If it’s a repair, we match the existing CertainTeed material – genuine shingles, correct color, correct profile. We re-seal liftable tabs where they’ll hold, replace failed ones, and address the underlying cause where there is one (ventilation is usually part of the answer). If it’s a full replacement, we tear off, assess the deck, and install per CertainTeed spec.
- 3
Test. We water-check the repaired area where practical. For low-slope work, we look for any remaining ponding or seam gaps. For shingle repairs, we make sure tabs are seated and seal strips are positioned to bond in the next heat cycle.
- 4
Warranty. We walk you through what’s covered under your remaining CertainTeed manufacturer warranty, what’s our workmanship coverage, and how to keep the roof serviceable. No fine-print surprises.
See the difference
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AfterCertainTeed Products We Service & Install in Van Nuys
We work across the CertainTeed residential lineup:
- Landmark and Landmark PRO architectural shingles – the most common CertainTeed roof in Van Nuys. We know this line inside out.
- Presidential Shake and Presidential TL – triple-laminate luxury shingles with serious weight and specific nailing requirements.
- XT 30 and Highland Slate – heavier architectural profiles that show up on a lot of 1980s and 1990s Valley homes.
- Symphony and Symphony Slate – synthetic slate with good curb appeal and specific foot-traffic vulnerabilities.
- Flintlastic SA – self-adhered modified bitumen for the low-slope and flat sections you find on postwar Van Nuys bungalows.
We keep common Landmark colors and accessory profiles accessible locally for fast repair turnaround. Specialty items like Presidential Shake or Symphony tiles are sourced as needed.
We Also Service These Brands
CertainTeed is one of seven roofing brands we work with. If you have GAF or Owens Corning shingles on another part of your property, or if a comparison with those systems would help you make a decision, we’ll give you a straight answer. Seven brands, one crew that knows them all. Your roof, your material choice.
FAQs – CertainTeed Roofing Service in Van Nuys
It’s common, but it’s not normal wear – it’s a ventilation problem. Landmark shingles, like most architectural shingles, hold up fine in Valley heat when the attic space has proper airflow. When ventilation is inadequate, heat builds under the deck, and the sun-hit slopes (south and west) shed granules faster and curl at the corners. Twelve years in is usually when it becomes visible. The roof may still have years left if we address ventilation and replace only the failing slopes. Call (866) 321-6172 and we’ll tell you honestly what you’re working with.
Yes. We install genuine CertainTeed Landmark shingles in the correct color and profile when matching an existing field. CertainTeed hasn’t discontinued Landmark colors as aggressively as some other manufacturers, so matching an older field is often doable. Some 20-year-old colors have shifted in the California sun, so we’ll bring sample boards and work with you on getting the closest match that won’t look patched.
We repair Flintlastic SA low-slope sections all the time – it’s one of the most common things we do, along with CertainTeed repair in Encino. Seam blisters, edge lift, and ponding-related failures can be repaired with proper seam re-adhesion, edge detailing, and sometimes a targeted membrane patch. We won’t push you toward a full roof replacement unless the membrane is truly failing or the deck underneath has water damage.
Depends on your roof deck and your goals. Presidential Shake is a triple-laminate that looks genuinely upscale and handles Valley sun well, but it’s heavy – your deck needs to support it, and not every 1950s Van Nuys bungalow is framed for that. Symphony synthetic slate looks like real slate at a fraction of the weight and cost, but it’s vulnerable to cracking at fasteners if people walk the roof. We’ll assess your deck, your roofline, and your budget before recommending one over another. No brand steering.
Santa Ana winds expose seal-strip failures on Landmark and Presidential. If the shingles were installed when the temperature was below CertainTeed’s activation window, the seal strips never fully bonded. The tabs sit there through months of normal weather, then a 50-mph gust finds the unbonded edges and lifts them. It’s an installation-temperature problem, not a product defect. We re-seal the liftable courses and replace the ones that cracked. Call (866) 321-6172 for a free estimate on the repair.
No. We’re an independent CertainTeed service provider. That means we’re not bound by any manufacturer’s program or sales quotas, and we don’t get incentives to push CertainTeed over another brand. We work with CertainTeed materials because they’re genuinely good products with a strong share of the Valley market, and we know their failure modes and repair methods as well as anyone. When you ask us for a recommendation, the answer comes from the roof, not from the brand.
When we’re matching an existing CertainTeed field, yes – genuine CertainTeed shingles, starter strips, hip-and-ridge, and underlayment. When it comes to aftermarket flashing, vent boots, and fasteners, we use quality aftermarket components where they outperform the OEM part. The goal is a repair that lasts, not a parts manifest.
It depends on the scope: a targeted shingle repair or seal-strip job runs a few hundred dollars, while a full Landmark tear-off and replacement on a typical Van Nuys ranch home runs several thousand, depending on the deck condition, ventilation work needed, and accessory choices. Our estimates are free and line-itemed. Call (866) 321-6172 and we’ll give you a real number for your specific roof.
Book Your CertainTeed Service in Van Nuys, CA
If your CertainTeed roof is curling, lifting, leaking, or just needs an honest inspection, call Rick and the team for Sherman Oaks CertainTeed service or anywhere in the Valley. We’ll come out, read the roof, and tell you straight what it needs. Free estimates. Call (866) 321-6172.
Written by Rick Dominguez, Owner at Van Nuys Roofing Co, serving Van Nuys and the San Fernando Valley.