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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
CertainTeed Roofing in Montclair, CA | Van Nuys Roofing Co
We provide CertainTeed sales & service across Montclair, CA, handling everything from Landmark shingle repairs on pitched sections to Flintlastic cap sheet work on flat and low-slope areas. The thing that separates our CertainTeed work here is simple: Montclair’s mid-century tract homes mix steep shingle planes with flat-roof sections constantly, and we actually know how to diagnose both. If your CertainTeed roof is showing age, call (866) 321-6172 for a straight assessment and a free estimate.
Why Montclair Residents Choose Us for CertainTeed Service
We’ve worked on CertainTeed systems across our Montclair service area and the Inland Empire long enough to know how their products behave under Montclair’s specific conditions. Landmark architectural shingles, XT shingles, Presidential Shake, Flintlastic SA cap sheet – we see them all on Montclair rooftops, and we know which failure patterns match which product. Rick Dominguez, our owner, grew up off Sepulveda Boulevard and spent two decades on San Fernando Valley rooftops before starting Van Nuys Roofing Co. He’ll walk your roof before recommending anything, because around here, a certain type of flat-roof seam failure gets mistaken for a shingle problem more often than you’d think.
We’re an independent CertainTeed service provider. Not authorized, sponsored, or endorsed by CertainTeed. That independence matters more than most homeowners realize – we recommend what honestly fixes the roof, whether that’s a repair, a partial replacement, or full reroofing. We also carry genuine CertainTeed materials and OEM-grade flashing and ventilation accessories, matched to your existing roof. You get the product consistency without being locked into a single-brand sales pitch.
And because we’re a full-service roofing company, we handle the inspection, the repair, and the replacement in-house. No coordinating between a shingle crew and a flat-roof crew. One team, one call: (866) 321-6172.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Montclair
- Curled and cracked Landmark shingle tabs on south-facing planes. Montclair summers regularly push past 100°F, and the UV load is relentless. Landmark shingles on a south or west exposure dry out, curl at the corners, and crack along the tab line long before the warranty term ends. This is the single most common CertainTeed failure we see in Montclair, and it’s almost always heat-driven, not age-driven.
- Granule loss exposing the fiberglass mat. The thermal cycling between 100°F days and cooler nights accelerates granule shedding on CertainTeed XT and Landmark shingles. Once the fiberglass mat shows through, those tabs become brittle and weak. Then a Santa Ana wind event catches a lifted tab and keeps going.
- Flintlastic SA cap sheet seam failure on flat sections. Low-slope roofs over rear additions and enclosed patios are everywhere in Montclair’s mid-century housing stock. Flintlastic seams at laps and penetrations heat-cycle repeatedly and separate. The maddening part? The leak doesn’t show until the first winter storm pushes water under the seam.
- Shrinkage and splitting at flashing and vent boot seals. The dry heat bakes rubber vent boots and flashing sealant until they shrink and crack, leaving a gap for storm runoff to ride under the shingle courses. Montclair gets little rain most of the year, but when it comes, those gaps get found immediately.
- Santa Ana wind lifting weakened XT shingle tabs. XT shingles are built for impact and wind resistance, but twenty years of UV degradation compromises the tab adhesive. High gust events lift granule-depleted tabs clean off, especially on east-facing roof edges where wind pressure is highest.
CertainTeed Service in Montclair: What Local Conditions Mean for Your Roof
Here’s what you won’t read on a generic Claremont CertainTeed service page. Montclair sits at the foot of the San Gabriel Mountains, and the housing stock is overwhelmingly post-WWII through 1970s single-story stucco tract homes. Many of those homes were built with low-pitch or nearly flat roof sections – enclosed patios, rear additions, carport conversions – that were never steep enough for shingles. That means a typical Montclair CertainTeed job isn’t one roof, it’s two or three roof systems on the same structure: a shingled front pitch, a Flintlastic or modified-bitumen flat section over the addition, and a transition seam where they meet. Coastal LA roofers rarely deal with this mixed-roof reality, but in Montclair it’s the norm. So when we inspect a CertainTeed shingle roof in the 91763 area, we’re always checking the flat section too. The shingles might be fine while the flat-roof seams are already open. Skip one and you’ve fixed half the problem.
CertainTeed Models & Products We Service in Montclair
We service the full CertainTeed line currently on Montclair roofs: Landmark architectural shingles, XT (X=Treme) shingles, Presidential Shake and Presidential Solaris, plus Flintlastic SA cap sheet for low-slope sections. For repairs, we match the existing shingle profile and color family where possible, and we use genuine CertainTeed or OEM-grade accessories for flashing, ventilation, and underlayment. We don’t chase cheap aftermarket matches on a warranty-eligible system – if the manufacturer’s product is what’s on the roof, that’s what goes back on. If you’re replacing a whole plane, we can also talk through warranty-eligible material options across the CertainTeed line, and compare it to alternatives from GAF, Owens Corning, IKO, Atlas, Tamko, and Boral. Your roof, your material choice.
See the difference
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AfterCertainTeed Service Pricing in Montclair
Pricing depends on what’s actually failing. Shingle repair on a Montclair home typically runs $350-$850 for tab replacement, blister repair, or flashing work. A leak repair involving flat-roof Flintlastic seams usually lands between $450 and $1,500 depending on how many penetrations and seams need attention. Full shingle replacement for a typical single-story Montclair rancher starts around $8,500 and can reach $15,000-plus for larger homes or Presidential-grade materials. What drives the cost: the number of roof planes, the condition of the decking, whether the flat section needs cap sheet work, and which CertainTeed repair in Ontario product line you choose. A free estimate gives you the exact number with no obligation. Call (866) 321-6172 and we’ll inspect first, then quote.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair 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 – CertainTeed Roofing in Montclair
Yes, unfortunately. Fifteen years is about when Landmark shingles on south and west exposures in Montclair’s 100°F-plus summers start showing curl, cracking, and granule loss. The shingle was rated for longer, but the Inland Empire UV load is brutal. If the curl is isolated to a few tabs, we can replace them. If it’s across a whole plane, it’s time to think about replacement. Call (866) 321-6172 – we’ll tell you straight which one you’re looking at.
Not always. We inspect both separately. The pitched shingle section has its own lifespan and the Flintlastic flat section has its own, and they don’t necessarily fail on the same schedule. What we won’t do is replace shingles without checking the flat section, because in Montclair those flat seams are usually the first thing to go. If the flat section has life left, we patch it. If it doesn’t, doing both at once is usually the better value.
Only if they’re already compromised. New, properly installed XT shingles with intact adhesive strips hold up well to high wind events. The problem is UV-aged XT shingles – once the granules go and the adhesive breaks down, a strong Santa Ana can lift tabs on east-facing edges. If your XT shingles are more than 12-15 years old and showing granule loss, wind-lift is a real risk. Call (866) 321-6172 for an inspection before the next wind event.
Usually, yes. If the leak is at a flashing point, a vent boot, or a specific seam on the flat section, we repair it directly. The honest answer is that a leak in a localized area gets patched. A leak across multiple planes with failing shingles is a different discussion. We don’t sell replacements where a repair does the job. If it doesn’t need replacing, we’re not going to tell you it does.
We use genuine CertainTeed shingles and Flintlastic membrane wherever a repair needs to match an existing CertainTeed system. For accessories like flashing, underlayment, and ventilation, we use CertainTeed or OEM-grade materials from the seven major manufacturers we work with. No generic substitutes on a warranty-eligible roof. Call (866) 321-6172 for exact pricing on a repair – estimates are free.
Service Areas Near Montclair
We serve Montclair and the surrounding Inland Empire communities, plus our home base in Van Nuys and the San Fernando Valley. If you’re in Ontario, Upland, Pomona, Claremont, or Chino, we can get to you. We also regularly work in CertainTeed service in Huntington Beach and CertainTeed service in Villa Park for clients with rental properties or second homes. Wherever the roof is, we’ll come look at it.
Book Your CertainTeed Service in Montclair Today
If your CertainTeed roof is curling, leaking, or losing granules, don’t wait for the next Santa Ana or winter storm to find the weak spot. Call (866) 321-6172 to schedule a free estimate. Rick and our crew will get on the roof, look hard, and tell you exactly what you’re dealing with – and what you don’t need to spend money on.
Written by Rick Dominguez, Owner at Van Nuys Roofing Co, serving Montclair and the Inland Empire with independent CertainTeed roofing service.