Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across Hornsby Bend
A full roof installation in Hornsby Bend typically runs $9,800 – $16,500 for a standard composition shingle roof on a 1,800 – 2,400 square foot home, with architectural shingles adding $1,500 – $3,000. Most jobs take three to five working days once materials are on site. We serve every corner of Hornsby Bend, from the ranch-style homes along FM 969 to the newer subdivisions near Tesla Road. Call (361) 202-8874 and a live person answers, any hour, any day. You’ll get a written price before a single nail is driven, and the technician’s name and photo before they ever knock on your door.

What makes roof installation different out here is the land itself. Hornsby Bend sits low and close to the Colorado River, which means humidity, occasional hail, and wind events that punish a roof in ways a generic contractor from across the metro won’t account for. Our Roof Installation team knows what these homes need because we’ve torn off hundreds of roofs in this specific area. We’ve seen what the pre-2000 builds hide under the shingles. We’ve documented what insurance adjusters actually look for. That local knowledge goes into every quote we write.
Why Mercer Roofing Co Austin Is Hornsby Bend’s Preferred Roof Installation Company
We don’t ask you to take our word for it. Before any Mercer technician arrives at your Hornsby Bend home, you get their name and photo sent to you. When they knock, they’re in a clean, marked uniform with a photo ID badge. That’s the Threshold Verified standard, and it exists because opening your door to a stranger shouldn’t feel like a gamble. Every Mercer location is independently owned and operated, founded in 2000 as part of the Threshold Group family. Our owner, Grant Whitlock, holds every one of our crews to that standard on every single job.
The 365-Day Done Right Promise backs every installation we do in Hornsby Bend. If something isn’t right within a year, we make it right, in writing, no fine print. Every repair includes a written guarantee and a free second visit if it fails. Before any work starts, you have a written price that matches the final invoice. No change orders, no surprise line items. Homeowners across Hornsby Bend have told us the same thing: the certainty is why they called us, and why they tell their neighbors.
We coordinate scheduling from the Austin office and dispatch crews into Hornsby Bend daily. We carry materials for the common local roof profiles, so we’re not waiting on a distributor in another county when your tear-off reveals a problem. That matters when a roof is open and a storm is building over the river.
Styles & brands we work with






Roof Ventilation in Hornsby Bend
Roof ventilation in Hornsby Bend is the single most overlooked factor in why shingles fail early on homes built before 2000. Many of these older ranch-style houses were framed with soffit intake but never got adequate ridge or eave exhaust, so attic temperatures climb well past 140 degrees in July. That heat bakes shingles from underneath, accelerates granule loss, and voids most manufacturer warranties. A proper ventilation upgrade during roof installation in Hornsby Bend means calculating intake and exhaust airflow to match the attic’s square footage, then installing continuous ridge vent, soffit baffles, and sometimes powered exhaust where the roofline doesn’t allow passive flow.
Why Pre-2000 Homes Need It Most
Hornsby Bend grew in waves. The ranch homes built in the 1960s through the 1990s along roads like FM 969 and Blue Bluff Road were framed before modern ventilation math became standard practice. We regularly see attic plywood that looks five years old on top and fifty underneath, rotted by trapped humidity and condensation. When we tear off those roofs, the decking often has soft spots that the homeowner never suspected because the shingles above still looked passable. That’s a cost no quote can predict until the old roof is off.
Warranty Protection Through Ventilation
Shingle manufacturers like GAF and CertainTeed write ventilation requirements into their warranty language. If the attic isn’t vented to spec, a warranty claim after hail or premature cracking gets denied. Grant Whitlock and our crews document the ventilation upgrade as part of the installation file, with photos and airflow calculations. That documentation has been the difference between a denied claim and a paid one for Hornsby Bend homeowners after the next storm rolls through.
Roof Flashing Installation in Hornsby Bend
Roof flashing installation in Hornsby Bend gets more interesting than it sounds, because this area’s humidity and the Colorado River’s moisture load mean flashing fails in specific, predictable ways. Flashing is the metal material, usually galvanized steel or aluminum, that seals the joints where the roof meets a wall, chimney, skylight, or valley. When it’s done wrong, water finds a path behind the shingles and into the decking. In Hornsby Bend’s climate, that water doesn’t dry quickly. It sits, and it rots.
Drip Edge and Valley Sealing
On older ranch homes around Hornsby Bend, we frequently find that drip edge was skipped entirely to save a few hundred dollars. Drip edge is the metal strip along the eaves and rakes that channels water off the roof edge instead of letting it wick back under the shingle. Without it, Colorado River humidity and the area’s afternoon storms work moisture under the shingle edges along the fascia, causing curl and rot within a few seasons. We install drip edge on every roof installation in Hornsby Bend, and we document it in the file.

Ice and Water Shield in Valleys and Around Penetrations
Even though Hornsby Bend rarely sees ice, ice and water shield is a self-sealing membrane that does more than prevent ice dams. It’s the best defense against wind-driven rain working into valleys, around chimneys, and at eaves where water backs up during heavy downpours. We install it in all valleys and around penetrations on every roof installation in Hornsby Bend, because a Texas thunderstorm can drop two inches of rain faster than a shingle roof can shed it. The membrane seals around nails, which is the real point.
Trusted Brands We Service in Hornsby Bend
We install and repair roofs using manufacturer-recognized shingle brands including GAF, CertainTeed, Owens Corning, IKO, Atlas, and Tamko. For Hornsby Bend homes, we often recommend GAF Timberline HDZ or CertainTeed Landmark architectural shingles because both carry 130 mph wind ratings when installed with the upgraded nailing pattern, and both perform well under the intense UV load this area gets. We also work with Boral for homeowners who want a stone-coated steel or tile profile. We keep common local stock accessible from our Austin dispatch, so material runs to Hornsby Bend don’t stall a job mid-tear-off.
See the difference
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After
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After
Before
AfterCommon Roof Installation Problems We See in Hornsby Bend Homes
- Missing or undersized ridge vents on pre-2000 homes. Humid attic air gets trapped, condensing on the underside of the decking and rotting it from the inside out. By the time we tear off the old shingles, the soft spots are often larger than the quote accounted for.
- Hail-damaged shingles installed over old starter strip. A shingle’s 130 mph wind rating only holds if the nailing pattern and starter course are done to the manufacturer’s spec. Skip that upgrade and the roof peels at the eaves in the next severe thunderstorm, which happens more often near the river than people expect.
- Omitted drip edge on older ranch homes. It saves a little money on the front end and costs a lot more in shingle curl, fascia rot, and premature replacement. We see it constantly on homes along FM 969 and Blue Bluff Road.
- Heat-cracked shingles from poor attic ventilation. Hornsby Bend’s summer attic temperatures can exceed 140 degrees without proper airflow, which cracks shingles from the underside and strips granules. The homeowner sees the granules in their gutters and thinks it’s just age. It’s usually ventilation.
Pricing for Roof Installation in Hornsby Bend, TX
A standard composition shingle roof installation in Hornsby Bend runs $9,800 – $13,500 for a typical 1,800 – 2,200 square foot ranch home. Moving to architectural shingles like GAF Timberline HDZ or CertainTeed Landmark adds $1,500 – $3,000. If your home needs new decking, which many pre-2000 Hornsby Bend homes do, budget an additional $2.50 – $3.50 per square foot for replacement plywood or OSB. Ventilation upgrades, drip edge, and ice and water shield all add documented value, and we put every line item in writing before any work starts. Call (361) 202-8874 for a free written estimate. The price we quote is the price you pay.
We Also Serve Cities Near Hornsby Bend
Our crews serve Hornsby Bend daily and cover nearby areas including Austin, Cedar Park, San Marcos, and Brushy Creek. If you’re in one of those communities and need a roof installation quote with a written price before work begins, call (361) 202-8874.
Serving Hornsby Bend, TX - Our Local Coverage Area
We’re based in the Hornsby Bend area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Installation in Hornsby Bend
Yes. Roof installations in Hornsby Bend should meet a minimum 110 mph wind rating for basic composition shingles, and 130 mph with the upgraded nailing pattern that architectural shingles from GAF and CertainTeed require for their wind warranty. Most insurance carriers in this area will ask for documentation of the wind rating after a storm claim. We include that documentation in every installation file, with the nailing pattern, shingle spec, and installation date. Call (361) 202-8874 if you want to know what your current roof is rated for. Estimates are free.
Almost always, it’s inadequate attic ventilation. Hornsby Bend homes built before 2000 frequently lack sufficient ridge or eave exhaust, so attic temperatures spike past 140 degrees in summer and bake the shingles from underneath. That heat cracks the shingle and strips granules regardless of how new the roof is. The fix is a documented ventilation upgrade during installation, not just another layer of shingles. Call (361) 202-8874 and we can inspect your attic airflow before you spend another dollar.
Ice and water shield is a self-sealing underlayment membrane that bonds around nails and prevents wind-driven rain from working under shingles at valleys, eaves, and penetrations. Yes, you need it in Hornsby Bend. This area’s severe thunderstorms can drop heavy rain faster than a shingle roof sheds it, especially in low-lying areas near the Colorado River. The membrane is standard on every Mercer roof installation here. Call (361) 202-8874 for a written quote that shows exactly where the membrane goes and what it costs.
A square is 100 square feet of roof area. Most Hornsby Bend ranch homes run 18 – 24 squares. The square count matters because less scrupulous bidders under-count squares to make the quote look cheaper, then hit you with a change order for the difference after the roof is open. Our written quotes include a measured square count, and that number doesn’t change unless we discover decking damage during tear-off, which we document immediately. Call (361) 202-8874 for a free estimate with the square count in writing.
It can, particularly if your current roof predates updated wind-rating requirements or shows granule loss and heat damage. Many carriers in this area will re-rate a policy when you provide documentation of a 130 mph wind-rated installation, impact-resistant shingles, and corrected ventilation. We provide exactly that documentation, including photos and the installation date, after every job. The savings varies by carrier. Call (361) 202-8874 and we can walk you through what documentation you’ll get.
Written by Grant Whitlock, Owner at Mercer Roofing Co Austin, serving Hornsby Bend and surrounding communities since 2000.