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CertainTeed Roofing in Westmont, CA | Van Nuys Roofing Co
We provide independent CertainTeed roofing service across Westmont, CA. Repairs, full replacements, inspections. The thing that makes our CertainTeed work different here is that we actually expect the weird stuff: skip sheathing under those 1920s stucco bungalows, neighbor-to-neighbor roof gaps measured in feet, and UV-baked shingles that look fine until the first real rain. Call (866) 321-6172 for a straight assessment.
Westmont is an unincorporated pocket of South Los Angeles where the housing stock got built before modern roofing standards existed. We work on CertainTeed repair in Lennox and CertainTeed systems every week in the 90047 ZIP, and we know what those roofs do after 60 or 80 years in this specific climate. If you need someone who knows the product line and the neighborhood, you’ve found the right crew.
Why Westmont Residents Choose Us for CertainTeed Service
Most roofers pick one brand and push it. We work with seven: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That means when you call us about your CertainTeed roof, you’re talking to a crew that actually knows the material. We install it, we repair it, and we replace it. We don’t have to look up the spec sheet because we’ve already worked on a hundred of them.
Rick Dominguez, our owner, grew up off Sepulveda Boulevard in Van Nuys and learned roofing through the construction technology program at Los Angeles Valley College. He spent nearly two decades on rooftops across the San Fernando Valley, CertainTeed in West Athens, and South LA before starting Van Nuys Roofing Co. His approach hasn’t changed since: inspect first, recommend second. If it doesn’t need replacing, he’s not going to tell you it does.
For Westmont homeowners, that matters. Many of these roofs are at the age where a salesperson sees a full replacement and a straight shooter sees five more years in the right spot. We’ll tell you which one you actually have. And because we stock both CertainTeed OEM accessories and quality aftermarket flashing, we can usually match what’s already on your roof without waiting on a special order.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Westmont
- Landmark granule loss on west and south slopes. Westmont’s inland South LA sun is relentless. We regularly see Landmark architectural shingles on west- and south-facing slopes losing granules within 10 to 15 years, leaving bare spots where the fiberglass mat shows through. It’s not a defect in the shingle. It’s UV exposure doing what UV does. Repointing the worst sections buys time; full replacement is the real fix when granule loss covers more than half the slope.
- Presidential shingles with heat blisters on low-slope additions. A lot of Westmont homes have rear additions and enclosed patios with low-slope roofs. Presidential shingles need proper attic ventilation. When that’s missing, which it often is on these older additions, the shingles heat up, blister, and crack along the tab edges. We fix the ventilation as part of the repair, because replacing the shingles without fixing the airflow just means doing the job again in five years.
- XT 25 three-tab shingles cracking at valleys and vent boots. The 1950s and 60s homes around Westmont were often roofed with XT 25 three-tab. After decades of thermal cycling in this hot, dry climate, that shingle turns brittle. Cracks show up at the base of valleys and around vent boots first, because those are the stress points. We see it constantly.
- Original CertainTeed organic-mat shingles trapping moisture underneath. Pre-1950 Westmont homes frequently still have original organic-mat CertainTeed shingles hiding under a second layer. Organic mats absorb moisture. They don’t dry out fast in a roof assembly that’s already tight on ventilation. We find deck rot and nail pops during tear-off that nobody saw from the attic. It’s not visible until the old shingles come off.
- Flashing failures that only leak when the rain hits. Westmont gets its rain in a short winter window. Sun-baked flashing and dried-out sealant around chimneys, vent boots, and sidewalls hold up fine all summer. Then the first real storm shows you every weak point at once. Pre-rain-season inspections drive our calendar here for a reason.
CertainTeed Service in Westmont: What Local Conditions Mean for Your Roof
Here’s something you won’t hear from a roofer working in Gardena or CertainTeed service in Inglewood. In Westmont’s 90047 pocket, a huge share of the housing stock is 1920s to 1960s stucco-over-wood-frame homes on small lots. Many of those houses were originally roofed with wood shingles laid over skip sheathing, which means the boards under the roof have gaps between them. When a previous owner re-roofed with CertainTeed organic shingles, they went right over that skip sheathing. The result: tear-off often reveals no solid deck underneath at all.
That’s a budgeting problem most people don’t see coming. You can’t nail new shingles to air gaps. We have to budget for sheathing replacement that isn’t visible from the attic and doesn’t show up in a standard inspection. On a 1948 stucco bungalow near 92nd Street and Western Avenue, we tore off two layers of brittle CertainTeed XT 25 shingles and found the original skip sheathing had sagged between rafters. Our crew installed new plywood decking, CertainTeed RoofRunner underlayment, and Landmark architectural shingles, then re-flashed the chimney and vent boots. That stopped the winter leaks that had stained the living room ceiling for years.
If you own a pre-1950s Westmont home, that’s what you need to know before anyone quotes you a number. A roofer who doesn’t understand skip sheathing will underbid the job and then surprise you with a change order halfway through tear-off. We quote the sheathing work up front.
CertainTeed Models & Products We Service in Westmont
We work on the full range of CertainTeed residential roofing you’re likely to find in Westmont. That includes Landmark architectural shingles, Presidential shake-style shingles, XT 25 three-tab, and Symphony designer shingles. We also handle the accessory layer: CertainTeed underlayments like RoofRunner, starter shingles, ridge caps, and the flashing details that go with each system.
Our parts approach is straightforward. When matching an existing CertainTeed system, we use CertainTeed OEM accessories where they matter for the warranty: underlayment, starter, ridge caps. For flashing and vent boots, we stock quality aftermarket options that meet or exceed code. That keeps costs reasonable without cutting corners where the manufacturer’s system matters. It also means faster turnaround for Westmont homes, because we keep common components on hand instead of waiting on distributor lead times.
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AfterCertainTeed Service Pricing in Westmont
Roofing prices in Westmont run a range, and anyone who quotes you a number without looking at your roof first is guessing. That said, here’s what we see on the ground in 90047:
- Shingle replacement or spot repair: $350 to $900 for a small section, depending on slope access and the condition of the surrounding shingles.
- Full roof replacement (Landmark architectural): $11,000 to $18,000 for a typical 1,200 to 1,600 square foot Westmont single-story home. Skip sheathing replacement typically adds $1,500 to $3,500 depending on the deck condition.
- Flashing repair or replacement: $250 to $800 per penetration, depending on whether it’s a simple vent boot or a chimney with step flashing and counter-flashing.
What drives the cost in Westmont specifically is the age of the roof assembly. If we find skip sheathing, that’s sheathing material and labor. If the roof has two layers, that’s a tear-off charge and disposal. A free estimate means we get on the roof and look. We don’t quote from the ground or from a satellite photo. Call (866) 321-6172 and we’ll schedule the inspection.
Serving Westmont, CA — Our Local Coverage Area
We’re based in the Westmont 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 Westmont
You can, and sometimes a patch genuinely buys you two or three years. But organic-mat shingles on pre-1950s Westmont homes absorb moisture, and the deck underneath is often compromised in ways a patch won’t address. We’ll inspect the area around the leak, check the attic, and give you an honest answer: patch now or replace now. Call (866) 321-6172 and we’ll tell you what you’re actually dealing with.
Tight lot lines mean tear-off debris, ladder placement, and drainage off one roof routinely ends up on a neighbor’s property. Roof-to-neighbor-roof gaps of a few feet mean our crews spend almost as much time protecting adjacent structures as the one they’re working on. We tarp, we clean as we go, and we plan the tear-off around where the debris will fall. It’s not optional in Westmont; it’s how the job gets done without a dispute.
For most Westmont homes, Landmark architectural shingles are the practical choice. They hold up better to UV than three-tab, they’re rated for the sun exposure we get here, and they’re cost-effective for the lot size most houses sit on. Presidential is beautiful but needs real ventilation to survive this climate, and many older Westmont additions don’t have it. We’ll look at your roof, your attic, and your slope orientation, and tell you what makes sense. Not what’s easiest for us to sell.
Usually, yes. Landmark is still in production, and we can match both the color and the weathering pattern in most cases. Color matching on a heavily sun-faded roof is the real challenge, but we’ve done enough of these in Westmont to get close. We’ll show you the match before we nail anything down. Call (866) 321-6172 for an exact assessment.
Yes. This is one of the most common things we deal with on Westmont tear-offs. When we remove the old shingles and find skip sheathing, we install solid plywood or OSB decking before laying new underlayment and shingles. We quote that work up front, which most roofers don’t. If you suspect your home has the original sheathing under the shingles, call (866) 321-6172 and we’ll inspect it before you spend a dollar.
Service Areas Near Westmont
We work throughout South LA and the surrounding area. Beyond Westmont, our CertainTeed crews cover CertainTeed service in Huntington Park, CertainTeed service in Florence-Graham, plus Van Nuys, Valley Glen, Sherman Oaks, Encino, Studio City, and North Hills. If you’re just outside the 90047 ZIP, call and ask. We likely cover it. For a fuller picture of where we work, see the Westmont service area page.
Book Your CertainTeed Service in Westmont Today
If your CertainTeed roof is showing its age, or you’re not sure whether the granule in the gutter means patch or replace, call us. We’ll get on the roof, look at what’s actually there, and give you a straight answer. Free estimates. No pressure. Call (866) 321-6172 to schedule your Westmont inspection.
Written by Rick Dominguez, Owner at Van Nuys Roofing Co, serving Westmont and South LA since the day the doors opened. For more on our CertainTeed work, see CertainTeed sales & service.