Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Why West Covina Homeowners Choose CertainTeed Roofing
Certainteed repair in West Covina means repairing and installing one of the most trusted shingle and tile brands in the country, and we do it as an independent contractor with real field experience across the brand’s product lines. We’re not authorized by CertainTeed, and we don’t pretend to be. What we are is a West Covina roofing company that has pulled apart enough Landmark shingles, Presidential Shake valleys, and Matterhorn tiles in this specific climate to know exactly how they fail, why they fail, and what fix actually lasts. Dylan Pace has run crews across the San Gabriel Valley for over a decade, and West Covina roofs are ground he knows well. Call (831) 777-6412 for a free estimate on any CertainTeed repair or replacement.

Why Trust Crestview Roofing Co West Covina for Your CertainTeed Roofing?
CertainTeed makes good roofing products, but a shingle only performs as well as the crew that installs or repairs it. Our technicians work with CertainTeed systems regularly, which means we know the difference between a Landmark shingle that has a manufacturing defect and one that has simply reached the end of its service life under West Covina sun. We know which CertainTeed tile profiles have been discontinued and which ones still match, and we know how to work around the warranty realities that manufacturers don’t always put in plain language on their website.
Dylan Pace, the owner behind Crestview Roofing Co West Covina, grew up in Los Angeles and picked up his first roofing tools after completing a construction technology program at East Los Angeles College. He has spent well over a decade running crews across the San Gabriel Valley, and West Covina has become some of his most familiar ground. He has worked streets near Galster Wilderness Park more times than he can count, from full tear-offs to flashing repairs on roofs that had been leaking quietly for years. Dylan reads a roof honestly: he will tell you what actually needs to be done today, what can wait six months, and what the number will be before a single nail goes in. Every quote I write is a promise, he says, and that is how we operate on every CertainTeed job.
Our service is warranty-safe. That means when you need our Roof Repair services, we document everything, use materials that maintain system integrity, and never cut a corner that would come back to bite you during a future claim. We are not authorized by CertainTeed or any other manufacturer, and we are clear about that with every customer. What we offer is better than a brand affiliation: honest, hands-on expertise from a company that has been fixing roofs since 2000, backed by The Relay Visibility Guarantee and a written 365-Day Done Right Promise on every repair.
Styles & brands we work with






Common CertainTeed Roofing Problems We Fix in West Covina
- Granule loss and cupping on Landmark shingles. Landmark is CertainTeed’s workhorse architectural shingle, and it holds up well in most climates, but West Covina’s south-facing and west-facing slopes get brutal afternoon sun. Over 15 to 20 years, we see the asphalt layer dry out, the granules turn to dust in gutters, and the shingle edges curl upward. This cupping is not a manufacturing flaw; it is the end of the shingle’s life. We repair localized spots when the damage is contained, but if you can see cupping across a whole slope, replacement is the honest answer.
- Valley leaks on Presidential Shake roofs. Presidential Shake is a heavy, high-profile shingle designed to mimic hand-split cedar. Its thickness makes it durable, but valleys are the weak point. When the metal flashing under the valley gets old or the original installer did not interweave underlayment properly, wind-driven rain pushes water up under the shingle edges and into the attic. We fixed a West Covina home with exactly this problem, where the original valley metal had pulled away from the deck and water was running onto the ceiling below. New galvanized valley metal, proper felt interweaving, and reset shingles stopped the leak. A follow-up rainstorm confirmed it was gone.
- Cracked and brittle Matterhorn concrete tile. Matterhorn is CertainTeed’s concrete tile line, and West Covina’s thermal swings do a number on it. Hot days followed by cool nights cause the tile to expand and contract. Over decades, that cycling makes concrete brittle, and a heavy Santa Ana wind or a footstep in the wrong spot cracks the tile. We replace individual tiles when we can match the profile, but sourcing discontinued 1960s and 1970s profiles is often the real challenge. Sometimes the match has to come from a salvage yard, and we will tell you that before we start.
- Underlayment failure under Grand Manor tiles. Grand Manor is a premium heavyweight laminated shingle intended to last decades, but no shingle outlives its underlayment. In West Covina, the original felt underlayment on many roofs is reaching the end of its life right around the same time the Grand Manor shingles above it are still functional. We see slow leaks at roof penetrations, pipes, vents, and skylights that have nothing to do with the shingle and everything to do with the underlayment underneath. Repair means lifting shingles, replacing the compromised felt with a modern synthetic underlayment, and resetting everything. We do this regularly.
- Improper flashing at walls and chimneys on any CertainTeed system. Flashing is the metal strips that seal joints around chimneys, walls, and skylights. It fails independent of the shingle brand. On CertainTeed roofs in West Covina, we often find step flashing that was never properly integrated with the shingle courses, or counterflashing that has pulled away from the stucco wall. Water follows gravity, and these are the spots where it gets in. This problem is brand-independent but we include it because half the leaks we fix on CertainTeed roofs are not shingle failures at all. They are flashing failures.
CertainTeed Parts & Our Repair-vs-Replace Approach
We use genuine CertainTeed replacement shingles and accessories when they are available and necessary to match an existing profile. There is no good reason to put a mismatched shingle on a visible roof slope from an aesthetic or performance standpoint. For older CertainTeed products where the exact color or profile has been discontinued, we source equivalent aftermarket components that meet current building code and blend as closely as possible. We will never install an aftermarket part without telling you, and we will never claim it is OEM when it is not.
The repair-versus-replace decision comes down to two questions. First, is the damage localized or widespread? Second, what condition is the underlayment in? If we find granule loss limited to one slope and the roof is otherwise sound, we repair. If we see cupping across every sun-exposed slope or moisture damage in the decking, replacement is the only responsible recommendation. We follow that logic on every CertainTeed job in West Covina, whether it is a Landmark shingle replacement, a Grand Manor underlayment repair, or a Matterhorn tile swap. Call (831) 777-6412 and we will walk the roof with you and show you what we are seeing.
Our CertainTeed Service Process – Step by Step
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Diagnosis. We inspect the roof, identify the failure point, and document it with photos. On a CertainTeed roof, we check shingle adhesion, granule loss, valley flashing, underlayment condition, and tile integrity. You get a written explanation of what we found before any work starts.
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Written quote. The price goes in writing before work begins. The number on the page is the number on the invoice. No change orders unless you approve them first, in writing.
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Repair or replacement. For repairs, we use genuine CertainTeed materials or disclosed aftermarket equivalents, installed to maintain warranty safety. For replacements, we follow manufacturer installation specs and local building code, pulling permits when required and passing inspections.
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Testing. After the work is done, we water-test repairs where possible and conduct a final inspection. We photograph everything.
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Warranty. Every repair carries our 365-Day Done Right Promise, in writing. If a covered repair fails within 365 days, we correct it at no charge, including a free second visit. Your digital invoice arrives by text, along with before-and-after photos.
See the difference
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AfterCertainTeed Products We Service & Install in West Covina
We work on the full range of CertainTeed roofing systems used in Montebello Certainteed service areas and West Covina: Landmark architectural shingles, Presidential Shake heavyweight shingles, Grand Manor premium laminated shingles, and Matterhorn concrete tile. Those four lines account for the majority of CertainTeed roofs in the San Gabriel Valley. For shingle replacement, valley repair, and tile underlayment replacement, we keep common CertainTeed shingle colors and profiles stocked locally when the supply house has them. For discontinued tile profiles, we source through salvage and specialty suppliers. If you have a CertainTeed roof that needs attention, call (831) 777-6412 and we will tell you honestly what it needs.

We Also Service These Brands
CertainTeed is one tool in the box, not the whole box. We install and repair roofs from GAF, Owens Corning, IKO, Atlas, Tamko, and Boral. That multi-brand experience helps us on CertainTeed jobs too, because we know how shingle systems compare and where each brand’s weak points tend to show up under West Covina conditions. If your roof needs work and it is not CertainTeed, we are still the crew to call.
FAQs – CertainTeed Roofing Service in West Covina
Check your gutters and downspouts for granule accumulation, then look at the south and west facing slopes for shingle edges that appear curled, cracked, or slick with exposed asphalt. Under West Covina’s sun, Landmark shingles typically show these signs between 15 and 20 years of age. Cupping across a whole slope means the shingle has hardened and lost flexibility, and the repair window is closing. If you are seeing bare spots, call (831) 777-6412 for a free inspection and an honest read on how much life is left.
Yes, when the damage is isolated. Presidential Shake is a thick, expensive shingle, and replacing an entire roof of it when only a valley or a few shingles are failing is wasteful. We can replace valley metal, reflash walls and chimneys, and swap individual shingles. The caveat is underlayment age. If the underlayment is failing, patching the shingles alone just moves the leak. We will tell you honestly which situation you are in. Call (831) 777-6412 for a free estimate.
Valley leaks on Grand Manor and other heavyweight CertainTeed products are usually a flashing or underlayment failure, not a shingle failure. The metal valley liner can corrode, pull away from the deck, or was never properly interweaved with the felt underlayment in the first place. Wind-driven rain then travels under the shingle and into the attic. The fix is lifting the shingles, replacing the valley metal, properly lapping the underlayment, and resetting everything. This is a repair we do regularly in Certainteed service in Whittier and West Covina. Call (831) 777-6412 to have it inspected.
Yes, individual cracked Matterhorn tiles can be replaced without redoing the roof, provided we can source a matching tile. The complication is age and profile. CertainTeed has discontinued several Matterhorn profiles over the years, and matching a 1960s tile may require a salvage yard or a compatible modern profile that we disclose before installing. Heat and Santa Ana winds crack West Covina tiles every year, so this is a repair we are familiar with. Call (831) 777-6412 and we will check availability and give you a written quote.
In most cases, using aftermarket components for a repair will not void the manufacturer’s warranty on the remaining original shingles, but CertainTeed’s fine print can be specific about replacement materials. The honest answer is that it depends on the product line, the age of the roof, and what the warranty document says. We stay warranty-safe by using genuine CertainTeed materials when available and disclosing any aftermarket substitutions before work starts, so you are never surprised by what went on your roof. Call (831) 777-6412 and we will review your warranty situation with you.
Most CertainTeed repairs in West Covina run between $350 and $1,400, depending on the scope. A single Landmark shingle replacement or a small valley repair lands on the low end. A Matterhorn tile swap with hard-to-find profile sourcing can run higher. A full CertainTeed reroof starts around $12,000 and goes up based on square footage, slope, and product line. We put every price in writing before work starts, and that number is the number on your invoice. Call (831) 777-6412 for an exact quote, free.
Book Your CertainTeed Service in West Covina, CA
If your CertainTeed roof needs a repair, an inspection, or an honest opinion on how much life it has left, call (831) 777-6412. We will schedule a free estimate, walk the roof with you, and give you a written price before any work starts. No voicemail loops, no four-hour windows. A live person answers 24/7.
Written by Dylan Pace, Owner at Crestview Roofing Co West Covina, serving West Covina since 2000.