Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterCertainTeed Roofing Company in Los Angeles: What to Know First
Brennan Roofing provides independent CertainTeed roofing service across Los Angeles, from repairs on Presidential Shake and Grand Manor installations to full tear-offs on Landmark and Carriage House systems. Most CertainTeed repairs in LA run between $350 and $1,900 depending on what failed, with full replacements typically landing between $14,000 and $28,000 on a standard single-family home. We put the price in writing before any work starts, so you’ll never get a number that moves at the door.
This page is for Los Angeles homeowners who have CertainTeed shingles, tiles, or flat roofing on their house and need a crew that actually knows how these materials behave here. If you’re seeing granules in your gutters, water stains on a ceiling, or shingles that look like they’re curling at the edges, call (361) 320-9467 and we’ll walk you through what you’re looking at. Travis Oakley will tell you straight whether it’s a repair or a replacement, and the estimate doesn’t cost a thing.
Key Takeaways
- We’re an independent CertainTeed service provider, not a manufacturer-authorized dealer. That means we work for you, not a warranty quota.
- Every CertainTeed job gets a written price before work begins. That number does not change at the door.
- Our guarantee is in writing for one full year. If a repair fails inside that window, we return at no charge.
- We install and repair other major brands too, GAF and Owens Corning among them, so you’ll get an honest comparison if your CertainTeed system is at end of life.
How CertainTeed Products Fail – and How We Fix Them
CertainTeed makes a solid product. But every roofing material has failure patterns, and after years of working on Los Angeles rooftops, we know exactly where CertainTeed systems tend to break down in this climate. Here’s what we see most often.
- Landmark and Landmark Pro shingle granule loss after wildfire-season dry spells. LA’s late-summer heat followed by Santa Ana winds accelerates surface wear on the asphalt layer. The symptom is a steady accumulation of granules in your gutters and a shingle surface that looks patchy. We fix it by replacing affected slopes before the underlying mat starts cracking, and we check the whole roof for accelerated wear patterns while we’re up there.
- Presidential Shake and Grand Manor curling at the eaves on older homes in Sherman Oaks, Studio City, and the foothills. These heavyweight laminated shingles hold heat, and when the attic ventilation was undersized from the start, the edges start lifting. That’s a ventilation issue masquerading as a shingle problem. We correct the airflow first, then replace the damaged shingles so it doesn’t happen again in two years.
- Flintlastic SA peel-and-stick membrane lifting at seams on low-slope sections. Los Angeles flat roof areas, especially on mid-century homes in the Valley, take direct sun for six months straight. When the lap seal fails, water gets underneath and the membrane starts peeling back. We strip the compromised section, re-prime the deck, and re-apply with a proper overlap so the seam holds.
- DiamondDeck and CertainTeed underlayment failure at roof-to-wall transitions after heavy rain years. When LA gets an El Niño winter, the weak point is almost always where the roof meets a stucco wall or chimney. The flashing gets reused instead of replaced, and the underlayment gives out behind it. We pull the old metal, install new flashing, and rebuild the transition so it drains instead of pooling.
- XactiVent and ridge vent systems clogged with Valley dust and debris. This one doesn’t fail with a leak, it fails with a utility bill and a hotter second floor. We see it constantly in the San Fernando Valley. We clear the vent runs and, on older CertainTeed installations, often recommend upgrading to a larger intake area to balance the system.
Our CertainTeed Roofing Company Process
Here’s how a CertainTeed job runs start to finish when you call Brennan Roofing. No ambiguity, no surprises.
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You call, a live person answers. Every hour of the day. You describe the problem, we schedule a visit, and you get a real arrival window from a real person, not a call center script.
- 2
We inspect and diagnose on the roof, not from a ladder. Travis still pulls his own inspections. We walk the entire roof surface, check the flashing, the vents, the decking condition underneath, and we photograph everything we find.
- 3
You get the price in writing before any work starts. No verbal ballparks that turn into bigger numbers. The scope, the materials, the labor, and the total are on paper, and that’s the number you pay.
- 4
We make the parts decision with you, in plain English. If your CertainTeed system is under manufacturer warranty, we’ll tell you what’s covered and what isn’t. We also advise honestly on OEM versus proven aftermarket options when that conversation matters. No upselling, no scare tactics.
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The work gets done by background-checked, uniformed technicians. You know exactly who is on your roof and why they’re there. We protect your property, clean up daily, and never leave a jobsite looking like a construction zone.
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We test the repair and then we put the guarantee in writing. Water test, visual check, and photos of the finished work. Your 365-Day Done Right Promise covers every single thing we touched on that roof for one full year.
What CertainTeed Roofing Company Costs in Los Angeles
Here are the real numbers for CertainTeed work in the Los Angeles market. These reflect what we see across the Valley, the Westside, and the foothills as of this year.
- Minor CertainTeed shingle repair (single leak, small patch, no decking damage): $350 – $650
- Flashing replacement at a chimney, wall intersection, or valley: $550 – $1,100
- Flat roof membrane repair on Flintlastic or similar CertainTeed low-slope systems: $800 – $1,900 depending on square footage
- Full CertainTeed Landmark shingle roof replacement (average LA single-family, ~1,800 sq ft roof): $14,000 – $22,000
- Full Presidential Shake or Grand Manor replacement (same footprint): $19,000 – $28,000
What moves the price: decking damage hidden under the old roof, steep-slope safety requirements, roof height and access, permit fees in your specific Los Angeles municipality, and whether you’re changing the shingle profile. We’ll show you all of it on a line-item quote so you can see exactly where the money goes. Call (361) 320-9467 and we’ll come out for a free estimate.
Why Los Angeles Homeowners Call Brennan Roofing for CertainTeed Work
We operate under something called The Garrison Standard. It’s not a marketing slogan. It’s a set of rules that govern every job we take: the written price before work starts, the background-checked uniformed technicians, the live person answering the phone, and the full-year guarantee in writing. Travis Oakley built Brennan Roofing on this because he spent enough time in Los Angeles attics and on LA rooftops to know what homeowners actually need, which is predictability.
We also install and service GAF and Owens Corning systems. That matters for a CertainTeed owner because it means you’ll get an honest material comparison when the time comes. If a CertainTeed repair is the right call, we’ll tell you that. If your roof is at the point where replacement makes more financial sense than another patch, we’ll show you options from three manufacturers and let you decide with real numbers. A roof that’s squared away doesn’t need a sales pitch.
CertainTeed Roofing Company FAQs for Los Angeles
CertainTeed’s manufacturer warranty covers defects in the shingle material itself, but it does not cover labor, tear-off, or any workmanship issues from the original installation. Most Los Angeles homeowners are surprised by this. We’ll review your warranty documentation with you and tell you exactly what’s covered before you spend a dollar. Call (361) 320-9467 for a free inspection and we’ll do the warranty homework with you.
Yes, in most cases. CertainTeed’s color lines have stayed fairly consistent over the years, and we stock or can source most current Landmark, Landmark Pro, and Presidential Shake colors within a few days. Older discontinued colors sometimes take longer or require a close-match decision, and we’ll handle that conversation honestly before ordering anything.
It depends on the age of the roof, the condition of the decking underneath, and how much of the surface is failing. On a roof under 12 years old with one or two problem areas, repair is usually the smarter call. On a 20-year-old CertainTeed roof with widespread granule loss and curling, you’re likely looking at replacement within a few years anyway, and patching it buys you time at roughly the same cost per year. Travis will tell you which one makes sense, and he won’t push you toward the bigger job unless the numbers actually support it.
For active leaks, we typically get a technician out within one to two business days. We don’t promise same-day service because we don’t do rushed work, but we do schedule honestly and show up when we say we will. If you’ve got water coming in, call (361) 320-9467 and we’ll talk through emergency measures like tarping while we get you on the schedule.
No. The price goes on paper before anything starts, and that’s the number you pay. The only exception is if we open up the roof and find structural damage nobody could have seen from the surface, and if that happens, we stop work, show you photos, and give you a new written price before going further. You approve everything first. That’s The Garrison Code, and we don’t do exceptions.
Yes. Full replacements in Los Angeles and most of the surrounding municipalities require a building permit, and we pull it ourselves. We also schedule and pass the required inspections. The permit cost is line-itemed on your written quote, so you’ll see exactly what the city charges before you sign anything.
Get a Free CertainTeed Roof Inspection in Los Angeles
If you have a CertainTeed roof and something doesn’t look right, or you just want to know what condition it’s in before another rainy season, call (361) 320-9467. We’ll send a technician who knows CertainTeed systems, give you a written assessment, and put the price on paper before any work happens. No charge for the visit, no pressure to buy, and a real person picks up the phone.
Written by Travis Oakley, Owner, Brennan Roofing at Brennan Roofing, serving Los Angeles and nearby areas.