Roof Installation in Floresville - Written Price, Workmanship Warranty

Fast, Reliable Roof Installation Across Floresville

A full roof installation in Floresville typically runs $9,800 to $17,500 for a standard single-story composition shingle roof on a 1,600 to 2,200 square foot home, and $18,000 to $34,000 for standing-seam metal. Most jobs finish in 4 to 7 working days once materials land on site. The number that moves fastest in Floresville right now is impact-resistant shingle upgrades, because hail claims here aren’t a question of if, they’re a question of which spring storm. Call (254) 276-4369 for a written quote before any work starts.

Call (254) 276-4369

We know Floresville’s roof lines from the courthouse square out to the new subdivisions past Highway 181. That matters because a roof cut tight to a property line on C Street needs different staging than a wide-open lot in Whispering Oaks. Our crews roll out from the San Antonio dispatch office and serve Floresville locally, with every tech’s name and photo sent to you before they walk up your drive.

Why Mercer Roofing Co San Antonio Is Floresville’s Preferred Roof Installation Company

Floresville homeowners call us because we solve the one thing most roofing quotes leave out: who you’re letting through the door. Before any of our technicians step onto your property, you get their name and photo on your phone. When they arrive, they’re in a clean marked uniform, and they hand you a photo ID badge at the door. That’s the Threshold Verified standard, and every Mercer location is contractually held to it.

We’re part of the Threshold Group family, founded in 2000. Grant Whitlock leads this location. Every roof installation comes with the 365-Day Done Right Promise: if the work isn’t right within a year, we make it right. In writing. Not as a handshake deal. Not as a “trust me.” A written guarantee on every repair, included with every job, and a free second visit if a repair fails. That’s the kind of certainty Floresville homeowners want when they’re spending five figures on a roof.

Our pricing starts the same way every time: a written price before any work starts. No surprises on the invoice. No change orders that show up after tear-off. You’ll know what the roof costs before a single nail is driven. Calls are answered by a live person, 24/7, not a voicemail tree.

We work with manufacturer-recognized shingle lines including GAF, CertainTeed, and Owens Corning. We pull permits where the City of Floresville requires them, and we handle the historic overlay paperwork when a roof near the courthouse triggers review.

Roof Flashing Installation in Floresville

Roof flashing installation in Floresville covers the metal work at every roof penetration and transition: valleys, chimneys, pipe boots, dormer walls, and the drip edge at the eaves and rakes. It’s the first line of defense against wind-driven rain, which Floresville gets in violent bursts every March through May. A full flashing replacement on a typical Floresville home runs $1,200 to $3,800 depending on chimney count, valley length, and how much existing metal needs to come off before new step flashing and counter-flashing go on.

On older homes near the historic core, flashing work often uncovers rotted fascia boards behind the old metal. We replace that wood, not just cover it. That’s the difference between a flashing job that lasts 20 years and one that leaks in 18 months.

Chimney and Valley Flashing

Steep 1890s to 1920s rooflines around the courthouse square have complex valley geometry. Each valley where two roof planes meet needs step flashing cut to match the roof’s pitch. Chimneys need counter-flashing mortared or caulked into the brick to prevent water from running behind the shingles. When we remove old flashing on these homes, we often find the original metal was cut too short, which is why water stains show up on the ceiling under the dormer.

Drip Edge and Rake Edge Replacement

Drip edge gets missed all the time on Floresville roofs, especially the rake edges on newer subdivision homes. The starter strip is nailed too high, and the drip edge isn’t tucked under the shingle edge. Wind blows rain straight under the first course. We pull the old edge, nail new drip exactly where it belongs, and re-lay the starter course.

TPO Roofing Installation in Floresville

TPO roofing installation in Floresville covers the single-ply thermoplastic membrane work most often needed on flat or low-slope roofs: commercial buildings near the downtown core, patio covers on newer homes, and some ranch-style additions along FM 775. A TPO install on a typical Floresville flat roof runs $6 to $9 per square foot installed, which comes out to roughly $7,200 to $10,800 for a 1,200 square foot roof. TPO does not fit steep-pitched shingle roofs, but it’s the right material for anything with a slope under 3:12.

We see TPO failures in Floresville where the membrane was installed over saturated, mossy decking without removing it first. That traps moisture, and summer heat delaminates the adhesive before the first gully-washer hits. We don’t install over wet decking. Period.

Low-Slope Homes and Additions

Some Floresville homes built in the 1960s and 1970s, particularly ranch-style homes south of the old railroad tracks, have low-slope roofs over their carports or back additions. TPO is often the most durable membrane for those areas, and it handles the hail better than old built-up tar and gravel roofs. Fully adhered TPO holds up well to wind uplift and installs faster than mechanically fastened systems.

Hail-Resistant Membrane Choices

For homeowners worried about hail, we recommend a thicker membrane, typically 60 mil TPO rather than 45 mil. The upcharge is modest, about $0.40 to $0.70 per square foot, and it buys real puncture resistance. Floresville sits in a hail-prone corridor, and the difference shows after a spring storm.

Trusted Brands We Service in Floresville

We install and warrant manufacturer-recognized shingle lines including GAF, CertainTeed, and Owens Corning, and we can source full roof systems from those makers so the warranty covers both materials and workmanship. For historic home replacements where composition shingles aren’t appropriate, we work with Boral and other tile and slate lines to match the older architectural character without fighting the historic review board. Parts and material lead times for Floresville customers are short because we keep regional stock at the San Antonio dispatch yard and schedule local delivery by the job. And we don’t mix brands mid-roof to clear out leftover inventory. Every roof gets one system, one warranty, one written price.

Common Roof Installation Problems We See in Floresville Homes

• Blown-off ridge vent and lifted drip edge on 1960s homes: On tight downtown Floresville lots, installers sometimes skip replacing rotted fascia boards to save a day. They reuse old nail holes in brittle wood, and the first windstorm pulls the vent and edge right off. We cut out the rotted board and replace it before the new metal goes on.
• Leaks around dormer valleys and brick chimneys after hailstorm spot repairs: Steep 1890s to 1920s roofs near the courthouse square get spot repairs with mismatched architectural shingles after hail. Two years later, the leak is back because the valley geometry was never corrected. Full re-decking is usually the only durable fix.
• Wind-driven rain intrusion at rake edges on 2000s subdivision homes: We see a sharp spike in these claims after every March to May hailstorm. The starter strip was nailed too high, and no drip edge is tucked under the shingle edge. The fix is pulling the rake edge courses and reinstalling them correctly.
• Ice and water shield delamination at eaves on older Floresville homes: When a new roof goes over mossy, saturated decking without removal, the membrane fails in the first summer. Deck rot follows, then shingle blow-offs. We remove old decking when it’s compromised, and we document it with photos before we lay anything over it.

Pricing for Roof Installation in Floresville, TX

We Also Serve Cities Near Floresville

Our crews cover the full corridor around Floresville, including Roof Installation in Floresville neighbors like Cibolo, Schertz, San Antonio, and Bulverde. Homeowners in those cities get the same written pricing, the same 365-Day Done Right Promise, and the same badge-at-the-door technician standard. If you’re on the edge of the Floresville service area, call us and we’ll confirm coverage.

FAQs About Roof Installation in Floresville