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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 Camarillo, CA | Mercer Roofing Co Thousand Oaks
We provide independent Camarillo Roof Repair, replacement, and maintenance across Camarillo, from Mission Oaks to Camarillo Heights and every tract in between. What makes our CertainTeed work here different is simple: we know which failure modes show up on Camarillo roofs specifically, and we write every price down before we touch anything. If your CertainTeed roof is lifting, leaking, or shedding granules, call us at (805) 309-3314 for a free estimate.
Our crews have completed hundreds of CertainTeed roof replacements and repairs across Camarillo, from 1960s ranch homes in Camarillo Heights to newer composition shingle roofs in Mission Oaks. We are an independent roofing contractor, not affiliated with or authorized by CertainTeed. That independence matters because it means our advice isn’t steered by a manufacturer’s interest. We’ll tell you straight when a localized repair makes sense and when a full replacement is the only cost-effective fix. We also carry CertainTeed sales & service expertise that spans the brand’s full shingle lineup.
Why Camarillo Residents Choose Us for CertainTeed Service
CertainTeed shingles are on thousands of roofs across Camarillo, and each neighborhood has its own way of wearing them down. Our owner, Grant Whitlock, grew up in Los Angeles and started with roofing as a teenager patching a neighbor’s garage after a wet winter. He learned to read a roof deck the way a doctor reads an X-ray: slowly, and without guessing. That approach carries through every CertainTeed job our Camarillo Roofing Company runs here.
Here’s what you get when Mercer Roofing shows up. A written price before any work starts, every time. A written guarantee on every repair, with a free second visit if it fails. And a technician whose name and photo were sent to you before arrival, who badges in with photo ID at the door. That last part matters to Camarillo homeowners, especially people home alone, parents with kids, and older residents who want proof of who’s at the door before they open it. Every technician is background-checked and identity-verified under the Threshold Verified standard. We answer the phone with a live person around the clock.
Styles & brands we work with





Common CertainTeed Roofing Problems We Solve in Camarillo
- Santa Ana wind uplift on CertainTeed XT 25 three-tab shingles. Homes built before 2010 with original three-tab are the most common call we get after a fall wind event. The tabs lift, nails pull through, and the shingle loses its seal. In Camarillo, winds funnel through the Santa Rosa Valley and hit the northern edges of town hard, so older three-tab roofs take a beating.
- UV brittleness and granule loss on Landmark architectural shingles. After 15-plus years of Camarillo’s strong sun, the asphalt dries out and granules start washing into gutters. South-facing and west-facing slopes go first. You’ll see bald spots and a sand-like grit at downspouts.
- Felt underlayment tears behind intact-looking CertainTeed shingles. Original 1960s roofs in Camarillo Heights often had 30-pound felt installed over skip sheathing. When Landmark shingles were later installed over that old felt, the felt kept aging. Santa Ana cycles tear it, and the roof leaks even though the shingles look fine from the ground.
- Valley metal corrosion at shingle-to-valley intersections. In Springville, eucalyptus leaf debris and morning marine layer moisture sit in the valleys and hold water against the metal. Over time, the metal rusts through and water wicks under the CertainTeed shingles. The leak shows up inside, often far from the valley itself.
- Chimney and pipe flashing failures on 1980s and 1990s tract homes. The flashing lasts about 20 to 25 years, and many Camarillo homes from that era are at or past that age. A failing flashing lets water in around penetrations even when the CertainTeed shingles around it are still serviceable.
CertainTeed Service in Camarillo: What Local Conditions Mean for Your Roof
Here’s the thing about Camarillo that gets missed by roofers who don’t work here every week. Camarillo Heights has a cluster of 1960s wood-shake-to-concrete-tile conversions where the original 30-pound felt underlayment was often reused, even when CertainTeed Landmark shingles were later installed over it. These roofs now leak from the felt, not the shingles, after Santa Ana wind cycles. The shingles hold fine; the paper underneath is what fails. If you own a Camarillo Heights home and you’re seeing water stains on ceilings after fall wind events, don’t let anyone sell you a full shingle replacement before they’ve looked at the underlayment. You might need underlayment replacement only, with shingles reinstalled or matched. That’s a very different price than a full tear-off.
Grant has seen this exact pattern enough times that he now asks homeowners in Camarillo Heights two questions before anything else: how old is the house, and has the roof ever been fully stripped to the deck. The answer usually tells us what we’ll find before we climb the ladder.
CertainTeed Models & Products We Service in Camarillo
We service the full CertainTeed residential lineup, including Landmark architectural shingles, XT 25 three-tab shingles, Presidential Shake luxury shingles, and Highland Slate shingles. Each line has its own wear pattern and its own repair approach here in Camarillo. For matching existing roofs or performing warranted repairs, we use genuine CertainTeed shingles and accessories. Where OEM flashing, underlayment, or fasteners are unavailable or priced beyond reason, we specify equivalent-quality aftermarket materials and tell you exactly what we’re doing and why. We keep common Landmark colors and matching accessories stocked locally so Camarillo repairs move quickly.
See the difference
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AfterCertainTeed Service Pricing in Camarillo
Here’s what you can expect for CertainTeed roofing work in Camarillo:
- Minor shingle replacement (a few lifted or broken tabs): $275 to $525
- Valley repair (metal replacement and shingle re-lay at one valley): $650 to $1,300
- Underlayment replacement on a section of an existing roof: $1,800 to $4,500 depending on size
- Full CertainTeed Landmark reroof on a typical Camarillo single-story ranch: $14,000 to $24,000 depending on decking condition, tear-off layers, and flashing scope
What drives the cost is the condition under the shingles: decking rot, old felt, and valley metal condition all move the number. Our free estimate includes a written line-item quote so you see exactly what you’re paying for. Call (805) 309-3314 to schedule one.
Serving Camarillo, CA - Our Local Coverage Area
We’re based in the Camarillo 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 Camarillo
Twelve years is early for Landmark granule loss, and in Camarillo the usual culprit is a south- or west-facing slope taking full UV exposure. The asphalt binder dries faster on those slopes, especially during heat waves, and granules release before their time. It can also indicate a batch defect. We’ll inspect the affected slopes, measure the granule loss, and tell you whether spot replacement or a slope re-cover makes sense. Call (805) 309-3314 for an exact assessment; estimates are free.
Sometimes yes, sometimes no. If the leak is around a flashing or a single torn shingle, we can repair it without touching the underlayment. But if the felt underneath is torn or deteriorated, patching shingles won’t stop the leak. Camarillo Heights homes with original 1960s felt often need underlayment replacement in the affected area, not just shingle work. We’ll show you photos of what we find and give you a written price before any work starts.
CertainTeed’s standard warranty covers manufacturing defects, not wind damage from weather events. Wind coverage typically requires a separate wind warranty, and even then, the terms depend on installation method and materials used. As an independent contractor, we don’t adjudicate warranty claims, but we can document damage, provide photos, and give you a written repair quote to submit to your insurer. Call (805) 309-3314 and we’ll walk you through what we’re seeing.
The deciding factor is what’s happening under the shingles at the valley. If the valley metal is corroded but the surrounding Presidential Shake shingles are intact, a valley repair is usually the right call. If the shingles at the valley edges are curling, cracked, or missing, you may be looking at a partial replacement. Springville sees faster valley corrosion because of leaf debris and marine layer moisture. We’ll inspect the valley, show you the condition of the metal and the shingles, and give you a straight answer. Estimates are free; call (805) 309-3314.
Yes, and Landmark is the most common conversion product we install in Camarillo. It’s lighter than concrete tile, which matters when the original framing wasn’t engineered for tile weight. It also handles Camarillo’s UV and Santa Ana wind well when installed with proper fastening and a quality synthetic underlayment. The key is stripping the old tile and felt down to the deck and starting fresh, not shingling over old materials. We’ll spec the full system and give you a written, line-item quote before any work begins.
Service Areas Near Camarillo
We serve Camarillo and the surrounding communities, including Camarillo service area coverage across the city, Moorpark, Thousand Oaks, Westlake Village, and Oak Park. If you’re nearby, we also provide CertainTeed service in Moorpark and CertainTeed service in Thousand Oaks with the same written-price guarantee.
Book Your CertainTeed Service in Camarillo Today
Call (805) 309-3314 to schedule your free CertainTeed roof estimate in Camarillo. A live person answers, day or night, and every visit starts with a written price before any work begins.
Written by Grant Whitlock, Owner at Mercer Roofing Co Thousand Oaks, serving Camarillo since 2000.