CertainTeed Roofing Service Nationwide

Why San Antonio Homeowners Choose CertainTeed Roofing

We provide Certainteed in San Antonio as an independent roofing service, from single shingle replacements to full Landmark system installs. Our crews work on CertainTeed roofs every week, which means we know the products, the failure points, and the repair details that keep warranties intact. We’re not a manufacturer-authorized contractor, and we’ll never claim to be. What we are is a local San Antonio roofing company that has spent years fixing and installing CertainTeed products the right way. Call (254) 276-4369 for a free estimate on any CertainTeed repair or replacement.

Call (254) 276-4369

CertainTeed has earned its reputation in San Antonio because their shingles hold up reasonably well against our two biggest roofing enemies: brutal UV exposure and spring hail. That said, no shingle survives a Texas supercell unscathed, and over the years we’ve seen every failure mode CertainTeed products can throw at a homeowner. This page covers what actually goes wrong, what it costs to fix, and how we approach repairs so you’re not guessing when the next storm rolls through.

Why Trust Mercer Roofing Co San Antonio for Your CertainTeed Roofing?

Most San Antonio roofing companies can slap a shingle on a roof. Fewer can tell you why a 2008 Landmark roof is cupping on the west slope but not the east, or why a certain run of XT 25 three-tabs shed granules faster than they should in our climate. We can, because we’ve been fixing CertainTeed roofs in San Antonio long enough to know the patterns. Our technicians have worked on the full CertainTeed residential lineup, from three-tab XT shingles to the heavier luxury lines like Grand Manor and Presidential Shake. That hands-on familiarity means we diagnose faster, order the right parts the first time, and don’t burn your afternoon guessing.

Grant Whitlock leads our San Antonio crew. He grew up in Los Angeles and learned the roofing trade through the construction technology program at Los Angeles Trade-Technical College before spending decades putting that education to work on real roofs in real weather. He and his team have served San Antonio for years, including projects across the Alamo Heights area where older homes demand careful flashing work and a patient hand. Grant is known for showing up on time, giving straight estimates without padding the numbers, and explaining every repair in plain language before a single nail goes in. When he’s not on a job site, he’s usually rewatching old Spurs playoff games with his youngest kid, a habit he picked up the first season he spent serious time in the city.

Every Mercer technician is background-checked, identity-verified, and arrives in a clean, marked uniform with a photo ID badge. You’ll know who’s coming before they knock. That’s the Threshold Standard, and it’s non-negotiable at every independently owned Mercer location. A roof shouldn’t be something you worry about – that’s our job.

Common CertainTeed Roofing Problems We Fix in San Antonio

• Premature granule loss on Landmark shingles. The Landmark series is CertainTeed’s workhorse architectural shingle, but years of San Antonio UV exposure can accelerate granule shedding, especially on south- and west-facing slopes. Once the granule layer thins, the asphalt beneath bakes and the shingle starts to cup. We regularly replace individual Landmark shingles where granule loss is isolated, and we always check the surrounding field for shingles that are about to fail the same way.
• Cracked and brittle XT 25 / XT 30 three-tab shingles. Three-tab shingles are thinner than architectural lines, and San Antonio’s hot summers followed by sudden rain can cause thermal shock that leaves them cracked or split. Once a three-tab cracks, wind uplift has an easy entry point. We see this most often on homes built between the late 1980s and early 2000s, back when XT 25 was a popular builder-grade option.
• Shingle blow-off from missing starter strips and poor nailing. This is a big one in San Antonio. Many CertainTeed roofs were installed by production crews that missed starter strips or nailed too high on the shingle. When a spring supercell hits with 60-plus-mph gusts, those shingles lift and fly. We find the missing starter course, correct the nailing pattern, and replace the blown shingles so the roof actually stays put in the next storm.
• Failed sealant strips causing wind-driven rain intrusion. Architectural shingles rely on heat-activated sealant strips to bond each course together. When that sealant fails, wind-driven rain can work its way under the shingle and into the deck. This failure is subtle and often gets misdiagnosed as a flashing problem. On CertainTeed roofs, we check sealant bond integrity as part of every leak investigation, because it’s frequently the real culprit.
• Hip-and-ridge cap deterioration on Highland Slate and Cedar Crest lines. The hip-and-ridge caps take the most aerodynamic abuse on any roof. CertainTeed’s Highland Slate and Cedar Crest caps are quality products, but 15 years of San Antonio heat and wind will eventually crack them. Replacing a failed cap is a small job that prevents a big leak, and we stock matching cap profiles for the most common CertainTeed lines so repairs don’t wait on shipping.

CertainTeed Parts & Our Repair-vs-Replace Approach

We prefer genuine CertainTeed components. Matching shingle colors, hip-and-ridge caps, starter strips, and leak barriers preserve the system warranty and keep the roof looking uniform. If you have a Landmark Pro roof in Moire Black, we’re not going to patch it with a close-enough gray from another brand. We’ll order the exact match. When CertainTeed has discontinued a color or product line, we use proven aftermarket flashing and underlayment rather than holding up your repair for parts that no longer exist. The standard is always: OEM where it matters, quality aftermarket where OEM isn’t available or would double the cost without improving the outcome.

Our repair-vs-replace guidance is straightforward. If a CertainTeed roof is under 10 years old and the decking is sound, we repair. Most isolated shingle damage, flashing failures, and cap issues are covered by our Roof Repair services, and we’ll tell you that plainly. If the roof is over 15 years old with widespread granule loss and curling across multiple slopes, a full replacement with a comparable Landmark or luxury line is usually the better financial decision. We’ll show you photos and explain the math before you spend a dime. Call (254) 276-4369 and we’ll walk you through what we find.

Our CertainTeed Service Process – Step by Step

1. 1
   Diagnosis on the roof, not from the ground. We get on the roof, check shingle condition, sealant bond, flashing details, and decking. CertainTeed roofs fail in predictable ways, and we look for all of them before recommending anything.
2. 2
   Written line-item estimate before work starts. You get a price in writing. Not a range, not a “we’ll see once we open it up.” A written price. No work begins until you approve it.
3. 3
   Repair or install with correct materials. We use matching CertainTeed shingles, proper starter strips, correct nailing patterns, and the right flashing details. No shortcuts on the details that cause leaks.
4. 4
   Post-work test. For leak repairs, we water-test before leaving. For replacements, we walk the roof line by line to verify nailing, alignment, and cap installation.
5. 5
   Written guarantee on every repair. Every Mercer repair includes a 365-day written guarantee. If the repair fails within that year, we return and fix it free. That’s the Done Right Promise, and it’s in writing on every job.

CertainTeed Products We Service & Install in San Antonio

Our San Antonio crews work on the full CertainTeed residential lineup. That includes all Landmark series shingles – Landmark, Landmark Pro, and Landmark Premium – plus the XT 25 and XT 30 three-tab lines still found on older homes across the city. For luxury profiles, we service and install Presidential Shake and Grand Manor, which require specific flashing and fastening techniques that most production crews get wrong. We also handle Highland Slate and Cedar Crest hip-and-ridge caps. We keep a local inventory of the most common CertainTeed colors and cap profiles, and we also offer Certainteed service in Cibolo, so repairs don’t wait on warehouse shipping.

We Also Service These Brands

CertainTeed makes a solid product, but it’s not the only brand on San Antonio roofs. We also repair and install GAF and Owens Corning systems, and we’ll give you the same straight assessment regardless of what’s on your roof. If your roof is a mix of brands from previous repairs, we’ll sort it out honestly and tell you what’s worth keeping.

FAQs – CertainTeed Roofing Service in San Antonio

Book Your CertainTeed Service in San Antonio, TX

If you have a CertainTeed roof in San Antonio that needs attention, call (254) 276-4369. We’ll send a background-checked, uniformed technician to inspect it, explain what we find in plain language, and put a written price in your hand before a single nail goes in. No door-knocking, no storm-chaser games, no surprises. Just straight answers from a San Antonio roofing crew that knows CertainTeed roofs.

Written by Grant Whitlock, Owner at Mercer Roofing Co San Antonio, serving San Antonio since 2000.