Metal roofing
Architectural shingles
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GAF
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Why Riverside Homeowners Choose CertainTeed Roofing
Brennan Roofing Co Riverside provides independent CertainTeed roofing repair and installation across Riverside, CA, and also offers Riverside Certainteed service. We service Landmark, Presidential Shake, XT 30, and Flintlastic SA systems daily, and our techs know how Inland Empire heat and Santa Ana winds stress these products in ways coastal crews never see. We’re an independent CertainTeed service provider, not factory-affiliated, which means every recommendation we make puts your roof’s actual condition first. Call (341) 208-3988 for a written, line-item estimate before any work begins.
Riverside’s semi-arid climate punishes roofing materials. Summer temperatures routinely push past 100°F, UV exposure runs long and hard, and the valley’s daily temperature swings cause nails to back out and shingles to crack. CertainTeed manufactures solid products, but no shingle or membrane is indifferent to this climate. Knowing how Landmark granule loss progresses here, or how Flintlastic lap seams blister after seasons of direct sun, is what separates a real CertainTeed specialist from a general roofer who happens to stock the brand. Travis Oakley grew up in Los Angeles and trained at Los Angeles Trade-Technical College before spending the better part of two decades roofing across the Inland Empire. His crews have torn off wood shake in Canyon Crest and laid low-slope TPO on Riverside warehouse buildings. That local experience shapes how we approach every CertainTeed job.
Why Trust Brennan Roofing Co Riverside for Your CertainTeed Roofing?
CertainTeed roofs fail in predictable ways in Riverside, and diagnosing those failures correctly is the difference between a $400 repair and a $14,000 replacement. Our technicians work on these systems weekly. We know what a Landmark shingle looks like after 12 years of Riverside sun, how XT 30 adhesive strips behave during October wind events, and where Flintlastic membranes typically blister on low-slope additions. That knowledge means we don’t guess, and we don’t pad estimates to cover uncertainty.
Every job operates under The Garrison Standard: a written price before any work starts, background-checked uniformed technicians who arrive inside the promised window, and a full-year written guarantee called the 365-Day Done Right Promise. If a repair fails within that year, we come back and make it right at no charge. That’s in writing. Travis Oakley built his reputation on straight estimates and showing up when he said he would, which sounds basic until three other contractors have stood you up. For CertainTeed work specifically, we stock OEM-compatible flashing, sealants, and matching shingle colors for fast turnaround. We also carry high-quality aftermarket underlayment and valley liners that exceed original specs for older out-of-warranty systems.
Styles & brands we work with






Common CertainTeed Roofing Problems We Fix in Riverside
- Granule loss on Landmark shingles. By year 10 to 12 in Riverside, Landmark shingles often shed granules at an accelerating rate. The asphalt layer oxidizes under sustained UV exposure, the granules lose adhesion, and the shingle surface becomes brittle. Homeowners notice granules in gutters or see patchy, lighter areas on the roof. Once granule loss is advanced, the shingles age fast, and patch repairs become less reliable. We inspect for this and tell you honestly whether sealing or replacement is the right call.
- Adhesive strip failure on XT 30 shingles during Santa Ana winds. XT 30 shingles use a heat-activated adhesive strip to seal the tabs. In Riverside, the thermal cycling of hot days and cool nights can break that seal before the shingle is worn out. When Santa Ana winds hit in September and October, unsealed tabs lift, and you get blow-offs or cracked shingles at the windward edges. We replace lifted tabs and hand-seal the new shingles with a wind-rated adhesive so they hold through the next wind event.
- Flintlastic SA membrane blisters at lap seams. On low-slope and flat sections, Flintlastic SA is a solid self-adhered membrane, but in Riverside’s heat, lap seams can develop blisters where the membrane wasn’t fully bonded or where trapped moisture expands. These blisters eventually crack, and water gets in. We cut out the blistered section, dry the substrate, and set a new membrane patch with proper lap sealing.
- Cracked or wrinkled Presidential Shake tiles at plane transitions. Presidential Shake gives a heavy, dimensional look, but in Riverside’s dry heat, decking movement at valleys and plane intersections can crack the tiles or break the seal where they meet flashing. What looks like a structural problem is usually movement stress plus heat exposure. We assess whether the decking is compromised or just settling normally, then repair the tiles and flashing accordingly.
- Valley corrosion and leaks on older CertainTeed systems. Many Riverside homes with 15- to 20-year-old CertainTeed roofs have original W-shaped metal valleys that corrode along screw lines. The screws expand and contract with temperature swings, the holes widen, and water follows the screws down. We see this constantly. The fix is a new valley liner set with ice-and-water shield, and replacement shingles matched to the existing color.
CertainTeed Parts & Our Repair-vs-Replace Approach
For CertainTeed roofs still inside the manufacturer’s material warranty period, we use genuine CertainTeed components so color matches and whatever coverage the manufacturer provides stays intact. That means factory shingles, factory flashing profiles where available, and sealants rated for CertainTeed’s surface chemistry. On older, out-of-warranty systems, we often use high-quality aftermarket flashing, underlayment, and sealants that exceed the original specs. Price matters, but so does longevity, and we’ll walk you through the trade-off in plain terms before we touch the roof.
The repair-versus-replace decision is straightforward. If the roof structure is sound, the decking is dry, and the failing area is localized, we repair. If shingles are brittle across multiple slopes, granule loss is widespread, or the decking is compromised in more than one spot, we tell you replacement is cheaper over five years than chasing leaks. We don’t sell reroofs; we give you the math. Call (341) 208-3988 and we’ll put it on paper.
Our CertainTeed Service Process – Step by Step
- 1
Diagnosis. We inspect the roof, attic, and decking. For CertainTeed systems, that means checking granule adhesion, seal strip condition, flashing corrosion, and membrane lap bonding. We photograph everything and show you what we found before quoting anything.
- 2
Written estimate. The price goes on paper before any work starts. No door-knock adjustments, no change orders unless you ask for additional work, and no surprises at the end. The Garrison Code applies to every CertainTeed job.
- 3
Repair or install. We use genuine CertainTeed components where warranty preservation matters, and upgraded aftermarket parts where they perform better on an older roof. Our crew is background-checked, uniformed, and supervised by a lead tech who knows the product.
- 4
Testing and documentation. After the repair, we water-test as needed, check all seals, and document what was done. You get the paperwork, including the 365-Day Done Right Promise: if it fails within a year, we return and fix it at no charge.
See the difference
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AfterCertainTeed Products We Service & Install in Riverside
We repair and install CertainTeed Landmark architectural shingles, including Landmark Pro and Landmark Premium, across Riverside’s mid-century neighborhoods and newer subdivisions. We also service XT 30 three-tab shingles on older homes, Presidential Shake heavy dimensional shingles on custom and higher-end builds, and Flintlastic SA self-adhered membranes on low-slope and flat sections. Our Riverside warehouse keeps common CertainTeed colors in stock for repairs, and we can source full pallets for reroofs within a few days. We also work with GAF and Owens Corning systems, and if you need Fontana Certainteed service, we can discuss that too, so if your roof has mixed materials or you’re comparing brands for a full replacement, we can give you a straight comparison without a sales pitch.
We Also Service These Brands
Brennan Roofing Co Riverside is not tied to any single manufacturer. We install and service GAF Timberline and Owens Corning Duration systems in addition to CertainTeed. If you’re weighing CertainTeed against GAF or Owens Corning for a Riverside reroof, we’ll break down cost, wind rating, and how each line handles Inland Empire heat, on paper, before you commit.
FAQs – CertainTeed Roofing Service in Riverside
No. We are an independent CertainTeed service provider, not factory-affiliated or factory-authorized. That independence means our recommendations are based on what your roof actually needs, not on what the manufacturer wants installed. We service CertainTeed roofs because we know the product well, not because a factory contract requires us to push it.
Yes, when the roof is still under the manufacturer’s material warranty period, we use genuine CertainTeed components to maintain color match and keep whatever coverage applies. For older, out-of-warranty systems, we often use high-quality aftermarket flashing, underlayment, and sealants that exceed original specifications. We’ll tell you which path we’re taking and why before work begins.
Most single-issue repairs, like a leaking valley or blown-off shingle, are completed in one visit, typically four to six hours depending on access and pitch. Larger jobs, like a full Landmark reroof, run three to five days. Flintlastic membrane repairs need dry weather and proper temperature for adhesion, so we schedule those carefully and don’t rush them. Call (341) 208-3988 for a timeline on your specific repair.
We service Landmark, Landmark Pro, Landmark Premium, XT 30, Presidential Shake, and Flintlastic SA systems. That covers the vast majority of CertainTeed roofs in Riverside, from 1950s three-tab installations to custom builds with heavy dimensional shingles. If you’re not sure what product is on your roof, we’ll identify it during the inspection and explain what it means for your repair options.
If your roof is still under the manufacturer’s material warranty, using non-matching or improper repair materials can void the remaining coverage. That’s why we use genuine CertainTeed components on warranty-period roofs and document the work. For out-of-warranty roofs, warranty preservation isn’t a concern, and we prioritize repair longevity over brand purity. Either way, you’ll know what applies to your roof before we start.
Riverside CertainTeed repair pricing typically runs from $350 to $900 for a valley rebuild or flashing replacement, $200 to $500 for individual shingle replacement, and $1,200 to $2,800 for larger leak repairs involving decking or underlayment. Full reroofs with Landmark shingles generally fall between $11,000 and $18,000 depending on square footage, pitch, and decking condition. These are honest ranges, not teaser numbers. Call (341) 208-3988 and we’ll give you a written, line-item estimate specific to your roof, free of charge and before any work starts.
Book Your CertainTeed Service in Riverside, CA
If your CertainTeed roof is leaking, losing granules, or missing shingles after the last Santa Ana event, don’t wait until water reaches the decking. Call Brennan Roofing Co Riverside at (341) 208-3988 for Certainteed repair in Rancho Cucamonga. A live person answers around the clock, no voicemail and no automated queue. We’ll schedule the inspection, put the price on paper, and stand behind the work with the 365-Day Done Right Promise. A roof should outlast the paperwork, not the other way around.
Written by Travis Oakley, Owner at Brennan Roofing Co Riverside, serving Riverside and the Inland Empire with straight estimates and CertainTeed expertise since joining the Garrison Partners family.