Boral Roof Installation Nationwide

Boral Roof Installation in San Antonio: What to Know First

We install and replace Boral roofing systems across San Antonio, and most full installations take 2 to 5 days depending on roof size, decking condition, and weather. A complete Boral roof installation in this market typically runs $14,000 to $22,000 for an average 2,200-square-foot single-story home, with tear-off of the old roof included. If you own Boral concrete or clay tile and you’re weighing repair versus replacement, this page will give you the straight numbers and the honest trade-offs before you spend a dime. Call (254) 276-4369 and we’ll walk the roof with you.

Call (254) 276-4369

We’re an independent Boral service provider, which means we’re not tied to a manufacturer’s sales program. Our job is to tell you what’s actually wrong and fix it, not to push a product line one way or the other. Grant Whitlock, who owns Mercer Roofing Co San Antonio, has been putting roofs on Texas homes long enough to know that a Boral tile over San Antonio’s limestone soil behaves differently than the same tile in Dallas or Houston. That local knowledge shows up in every estimate we write.

How Boral Products Fail – and How We Fix Them

Boral makes a genuinely strong roofing product, but no roof is bulletproof. These are the failure patterns we see most often on San Antonio homes with Boral roofs, and what we do about each one.

• Boral Concrete Tile – cracked corner breaks from impact. San Antonio gets real hail, and concrete tile corners are the first thing to go. A tile can crack clean through at the corner while looking fine from the ground. During installation, we walk every tile course by hand and tap-test corners with a rubber mallet. Cracked tiles get replaced before they let water through to the underlayment. If the underlayment is damp, we don’t just swap tiles – we open the section and inspect what’s underneath.
• Boral clay roof tile – hairline fissures from thermal cycling. Clay tiles expand and contract with San Antonio’s hot days and cool nights. Over years, hairline fissures develop, especially on south and west-facing slopes. These aren’t visible from the ground. During an installation, we flag every fissured tile and replace it, because a fissure today is a water channel next spring. The underlayment under a fissured clay tile is almost always compromised, which means the tile can’t just be patched – it has to come off so the membrane below can be checked.
• Underlayment failure under Boral tile – the real hidden problem. Most Boral tile roofs in San Antonio don’t fail at the tile level; they fail at the underlayment level. Boral tiles can last 50-plus years, but the felt or synthetic underlayment underneath them breaks down much sooner, usually in the 20-30 year range. When we do a full Boral installation, we use a high-grade synthetic underlayment rated for the tile system, not the cheapest felt on the supply-house shelf. That’s the layer that actually keeps water out of your attic.
• Boral roof tile – step flashing separation at wall intersections. Where a Boral roof meets a chimney, dormer, or sidewall, the step flashing can pull away over time. On Alamo Heights homes with older tile, we regularly find step flashing that was never properly integrated with the tile profile. During installation we cut and layer flashing to match the actual tile profile, not a generic L-flange. This is one of those details you don’t see until it leaks, and by then you’ve got drywall damage inside.
• Boral tile – broken battens from improper original install. Some Boral installations from decades back used untreated wood battens, and in San Antonio’s humidity those battens rot. A tile can look perfectly seated while the batten underneath it is crumbling. When we do a full Boral install, we replace every batten and use battens rated for the tile system. If you’ve got a roof where tiles feel loose or sound hollow when tapped, that’s often a batten problem, not a tile problem.

Our Boral Roof Installation Process

A Boral roof isn’t a weekend project, and we don’t treat it like one. Here’s what a typical full installation looks like from the first call to the final sweep.

1. 1
   Call and walk-through. You call (254) 276-4369, and a live person answers – no voicemail tree, no callback form. We schedule a roof walk at a time that works for you. Grant or one of our lead installers will walk the roof with you and point out exactly what’s failing and what doesn’t need to be touched.
2. 2
   Written price before any work starts. We give you a written, line-item estimate. No verbal ballpark. No “we’ll see when we get up there.” The price you sign is the price you pay, and we put that in writing.
3. 3
   Parts decision: OEM Boral tile versus quality aftermarket. Boral tile is manufactured in specific profiles, and if a profile is discontinued, we’ll tell you. We source OEM Boral tile where available, and when OEM isn’t available, we use aftermarket tile matched for profile, color, and weight. We never mix a tile that’s close enough – if the weather-facing edge doesn’t sit right, water finds its way in.
4. 4
   Tear-off, deck inspection, and replacement. We remove the old tile and underlayment, then inspect the decking board by board. San Antonio attics run hot, and decking rot at the eaves is common. Any soft or rotted decking gets replaced before we lay anything new.
5. 5
   Underlayment, battens, and tile installation. We lay a high-grade synthetic underlayment, install new battens, and set the tile course by course. Every tile is checked for cracks, fissures, and seating. We flash every penetration, wall, and valley the way the Boral system is designed for, not the way it’s fastest.
6. 6
   Final inspection and the 365-Day Done Right Promise. We walk the roof with you, show you the completed work, and hand you a written guarantee. If it’s not right within 365 days, we come back and make it right. That’s the whole promise, in writing, on every job.

What Boral Roof Installation Costs in San Antonio

Here are the real numbers for the most common Boral installation scenarios we see across San Antonio.

• Full Boral concrete tile roof, 2,200 sq ft single-story: $14,000 – $22,000 (tear-off included)
• Full Boral clay tile roof, 2,200 sq ft single-story: $17,000 – $26,000 (clay runs higher, and that’s the honest truth)
• Partial tile replacement and underlayment repair (200 – 400 sq ft section): $2,800 – $6,500 depending on decking condition
• Underlayment-only replacement under existing Boral tile: $8,000 – $14,000 depending on tile reusability
• Decking replacement, per sheet (4×8): $75 – $140 per sheet, depending on thickness and access

What moves the price most is decking condition, roof pitch, and whether the existing tile can be reused. Steep roofs and two-story homes cost more because the work is slower and we take additional safety steps. We don’t charge surprise fees, and we don’t change the number after we start. Call (254) 276-4369 for a written, line-item estimate – it’s free, and it takes the guesswork out of the budget.

Why San Antonio Homeowners Call Mercer Roofing Co San Antonio for Boral Work

A roof shouldn’t be something you worry about – that’s our job. We built Mercer Roofing Co San Antonio on a simple idea: you deserve to know who’s coming to your home before they knock. Every technician we send is background-checked, identity-verified, and arrives in a clean, marked uniform with a photo ID badge. Before they arrive, we send you their name and photo, so there’s no stranger at the door – just the person we said was coming.

Every Boral job comes with a written price before work starts and a written guarantee on every repair. If a repair fails within 365 days, we come back on a free second visit and make it right. That’s the 365-Day Done Right Promise, and it’s on every job, not just the big ones. We also install and repair GAF, Owens Corning, and CertainTeed systems, so if your roof has a mix of materials or you’re weighing a brand change, we can give you a straight comparison without leaning you toward the product with the highest margin. And our phone is answered by a real person, 24/7. No voicemail. No callback form. A human being picks up.

Grant grew up in Los Angeles and learned roofing through the construction technology program at Los Angeles Trade-Technical College, then spent years on real roofs in real weather. He’s been serving San Antonio for years, including Alamo Heights homes where older tile demands careful flashing work and a patient hand. He’s the owner you’ll see on the roof walk, not a sales rep reading from a script.

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