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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 Whittier, CA | Van Nuys Roofing Co
We’re an independent CertainTeed roofing service provider working across Whittier, and the short version is this: if your CertainTeed roof is failing, it’s usually failing differently depending on which side of your house faces the Puente Hills sun and which side stays shaded. That split, more than anything else, drives how we diagnose and repair CertainTeed systems in this city. Most Whittier homes predate the postwar boom, which means we’re not doing new construction here. We’re re-roofing, repairing, and replacing CertainTeed materials on 1920s through 1950s stick-built homes, and we do it with a brand-agnostic eye. Call (866) 321-6172 for an inspection and we’ll tell you honestly whether repair or replacement makes sense.
Why Whittier Residents Choose Us for CertainTeed Service
We work with seven major roofing manufacturers: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. That matters in Whittier because most roofing companies around here push one brand’s product line and that’s all you’ll ever hear about. We’re not tied to CertainTeed’s catalog, so when we recommend a CertainTeed product, it’s because it’s actually the right material for your roof, not because we have a truck full of it. Rick Dominguez, our owner, grew up off Sepulveda Boulevard and spent nearly two decades on rooftops across Southern California before starting Van Nuys Roofing Co. He’s known for flat roof work and for being straight with people. As Rick puts it: “If it doesn’t need replacing, I’m not going to tell you it does.”
That’s the position we take on every CertainTeed inspection, repair, or replacement in Whittier. We inspect first, recommend second. If a CertainTeed plane still has life, we repair it. If the decking underneath is failing, we say so plainly. You get an honest condition assessment before you spend a dollar on work, and that assessment comes from a crew that knows CertainTeed’s installation requirements inside out without being beholden to the manufacturer. For broader context on how we handle the brand, see our CertainTeed sales & service page.
Styles & brands we work with






Common CertainTeed Roofing Problems We Solve in Whittier
These are the failure modes we see most often on CertainTeed roofs across Whittier’s specific housing stock:
- Sun-curled and cracked south-facing shingles. On the hillside streets north of Whittier Boulevard, south-facing planes bake in inland heat that’s significantly hotter than coastal Los Angeles. CertainTeed Landmark and Presidential shingles on those slopes curl, crack, and shed granules years earlier than the same product would on a coastal exposure. We see it constantly in the 90601 and 90602 ZIPs.
- Moss and dry-rot on shaded north-facing planes. The flip side of the same street. North-facing CertainTeed underlayment stays damp through the June gloom, and by August you’ve got moss intrusion and soft decking under what looks like an intact roof. Tile and shake surfaces hide this failure until water’s already in the attic.
- Sagging skip sheathing under old shingle layers. Whittier’s 1920s through 1940s homes often still have their original skip sheathing. When a CertainTeed shingle field sits on that, granule loss at the ridge and lifted tabs are usually a decking problem, not a shingle problem. Patching shingles over sagging boards just buys you another wet winter.
- Santa Ana wind lifting ridge caps and hip tabs. Wind funnels off the Puente Hills and hits certain hillside exposures hard. CertainTeed installs where nails were spaced for flatland wind loads lose ridge caps and hip tabs within a few seasons. We re-nail and re-seal to wind-uplift specs that account for Whittier’s specific gusts.
- Shingles installed below rated pitch on low-slope additions. Whittier bungalows often have rear additions, porches, or sunrooms with shallow-pitch roofs. Standard steep-slope CertainTeed shingles get installed on those slopes all the time, and they fail at the laps within a few seasons. On those roofs, the fix is switching to a CertainTeed Flintlastic low-slope membrane or cap sheet system, not another shingle layer.
CertainTeed Service in Whittier: What Local Conditions Mean for Your Roof
Here’s the thing about Whittier that a generic roofer from outside the area won’t tell you: the housing stock north of Whittier Boulevard is a completely different animal from what you’ll find a few miles south in Santa Fe Springs or Pico Rivera. Up in the hills, you’ve got 1920s Spanish Colonial Revival and Craftsman homes with shallow-pitch roofs, clay tile, and original skip sheathing. Those structures were built long before modern fire-rated shingle assemblies existed, and many of them were never engineered to carry the weight or meet the pitch requirements of today’s CertainTeed systems. So the re-roof decision on an Uptown or hillside home in Whittier often comes down to an engineering call about the roof structure and pitch before it’s ever a shingle-color decision. That’s the order we work in: structure first, then material. It’s also why we offer full roof replacement, roof decking replacement, and tile underlayment replacement as standalone services. You can’t put a proper CertainTeed assembly on a deck that was never meant to hold one, and we’ll tell you that before we sell you anything.
We had a 1920s Craftsman bungalow in the hills north of Whittier Boulevard where this played out exactly as predicted. Our crew pulled a failing CertainTeed Landmark field and found the original skip sheathing soft and moss-blackened under the north-facing plane while the south-facing shingles were simply sun-curled and cracked. We replaced the rotted boards with solid decking, laid new CertainTeed underlayment and Landmark shingles across the entire roof, and re-flashed the valleys. One street, two opposite failure modes, one correct South Whittier CertainTeed service. That’s what local knowledge buys you.
CertainTeed Models & Products We Service in Whittier
We work on the full range of CertainTeed residential roofing products, including Landmark, Landmark Pro, and Landmark Premium architectural shingles, Presidential Shake and Presidential TL, Cedar Impressions and Grand Manor for larger Spanish and ranch re-roofs, and Flintlastic low-slope membranes for the flat and shallow-pitch sections common on Whittier additions. When a roof warrants CertainTeed materials, we install genuine CertainTeed shingles, underlayments, and membranes so the system and its manufacturer warranty stay intact. For flashing, vents, and fasteners, we sometimes recommend quality aftermarket components when CertainTeed’s own parts aren’t the right fit for an older Whittier roof. We stock the high-turnover CertainTeed products for faster turnaround here, and what we don’t have on the truck we can source quickly. The goal is a roof assembly that holds up to Whittier’s specific conditions, not a product catalog on your house.
See the difference
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Before
AfterCertainTeed Service Pricing in Whittier
CertainTeed roofing costs in Whittier run on the same patterns as the rest of the LA basin, but with local wrinkles. Full replacement with CertainTeed Landmark architectural shingles on a typical Whittier home generally starts around $9,000 to $14,000 depending on square footage, tear-off needs, decking replacement, and whether we’re dealing with steep hillside access. Presidential or other premium lines add meaningfully to that. Tile underlayment replacement under existing clay tile typically runs $6,000 to $12,000. Targeted repair work, like re-sealing lifted ridge caps or replacing a damaged section, can be done for a few hundred to a few thousand dollars if the surrounding field is sound. What drives cost here more than anything is decking condition. Older Whittier homes with original skip sheathing often need replacement boards before new CertainTeed materials go on, and that’s a line item we show you upfront, not a surprise at the end. Every estimate is free and itemized. Call (866) 321-6172 and we’ll walk your roof and give you a written number.
Serving Whittier, CA — Our Local Coverage Area
We’re based in the Whittier area and know this community well, including CertainTeed in West Whittier-Los Nietos. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – CertainTeed Roofing in Whittier
Because Whittier’s hillside streets have a north-south exposure split that creates two different microclimates on the same roof. South-facing planes bake dry in the inland heat and the shingles curl and crack. North-facing planes stay shaded and damp through the June gloom, which lets moss take hold and dry-rot set into the decking under the CertainTeed underlayment. Both planes fail, just for opposite reasons and at different rates. The fix depends on which side has failed and how far the rot has spread. Call (866) 321-6172 and we’ll inspect both exposures and tell you what each one actually needs.
Technically, in some cases, yes. But on most Whittier homes built before 1950, the answer should be no. The original skip sheathing under those old shingle layers is often sagging, soft, or already delaminating, and laying new CertainTeed shingles over a failed deck just accelerates the problem. You’ll have granule loss and lifted tabs within a few seasons and you’ll pay to tear everything off anyway. We’ll inspect the deck and tell you honestly whether a clean re-roof with new CertainTeed materials over solid decking is the cheaper long-term choice. It usually is. For an exact assessment, call (866) 321-6172.
Absolutely. CertainTeed manufactures underlayments and membranes designed specifically to go under clay tile systems. The issue on Whittier’s 1920s and 1930s Spanish Colonial homes is usually the deck underneath, not the tile or the underlayment choice. If your original skip sheathing is still there, it often needs to be replaced or overlaid with solid sheathing before a modern CertainTeed underlayment can be properly installed. We do tile underlayment replacement as a standalone service, including East La Mirada CertainTeed service, and we’ll tell you what your specific roof structure can actually support. Call (866) 321-6172 for an inspection.
Nail spacing. Whittier sits at the base of the Puente Hills, and when Santa Ana winds funnel off the bluffs, they hit certain hillside exposures with gusts far stronger than what flatland installers typically engineer for. If your CertainTeed ridge caps and hip tabs were nailed at standard spacing without wind-uplift adjustments for hillside exposure, the caps will lift after every big wind event. We re-nail and re-seal to specs that account for Whittier’s actual wind patterns, not a generic wind-load table. If it keeps happening, the fix is re-installation with the right fastening pattern, not more sealant. Call (866) 321-6172 and we’ll take a look.
Generally, no. Standard steep-slope CertainTeed shingles have a minimum pitch rating, and many Whittier porch roofs and rear additions fall below that threshold. When shingles get installed below their rated pitch, water backs up at the laps and the roof fails within a few seasons. For low-slope sections, CertainTeed’s Flintlastic membranes and cap sheet systems are the right product, not shingles. We’ll measure your pitch and tell you what actually belongs on that slope. Estimates are free, so call (866) 321-6172.
Service Areas Near Whittier
Our Whittier work takes us across the nearby communities and the hills that share its housing patterns. We also serve the broader Whittier service area, and we handle CertainTeed roofing in the neighboring communities of Rolling Hills Estates, Avocado Heights, Hacienda Heights, and La Habra Heights. If you’re on the edge of Whittier or just over the hill, call us and we’ll let you know if we cover your street.
Book Your CertainTeed Service in Whittier Today
If your CertainTeed roof is showing wear on one side but not the other, or if you just want an honest condition assessment before committing to anything, call (866) 321-6172. We’ll schedule a free inspection, walk the roof with you, and tell you straight what needs work and what doesn’t.
Written by Rick Dominguez, Owner at Van Nuys Roofing Co, serving Whittier and the surrounding communities.