Metal roofing
Architectural shingles
Tile roofing
GAF
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roofing Company Across Alamo Heights
When your roof starts leaking in Alamo Heights, you want a straight answer about what’s wrong, what it’ll cost, and who’s coming to your door. Mercer Roofing Co San Antonio serves Alamo Heights with written pricing before any work starts, background-checked technicians who show a photo ID badge, and a live person answering the phone 24/7. Most Alamo Heights Roof Repair jobs run $450 – $1,800 depending on what’s actually broken, and we’ll tell you the number before we touch a single shingle. Call (254) 276-4369 for a free estimate.
Why Mercer Roofing Co San Antonio Is Alamo Heights’s Preferred Roofing Company
Alamo Heights homes aren’t like houses in the rest of San Antonio. The 1920s through 1950s cottages and ranch styles off Broadway, along Katherine Court, and near the Witte Museum still carry original wood shake or composition shingles under later clay tile and standing seam additions. That layered history means a roof that looks fine from the curb can be hiding decking rot, mismatched flashing, or valleys that have been quietly failing for years. Our crews know what to look for because we’ve opened up enough Alamo Heights roofs to recognize the patterns.
Every technician who arrives at your Alamo Heights home is background-checked and identity-verified under the Threshold Standard. You’ll get the name and photo of your technician before they arrive, and they’ll badge in with a photo ID at the door. No strangers. No surprises. No wondering who’s walking up your driveway.
Grant Whitlock, who leads our San Antonio operation, holds every job to the 365-Day Done Right Promise: if the work isn’t right within a year, we make it right. That’s a written guarantee on every repair, included with every job. No fine print. No exclusions for the stuff that actually matters.
Our reputation in Alamo Heights is built on showing up when we say we will and putting the price in writing before the first nail goes in. Homeowners here tend to ask harder questions, and we think that’s a good thing. The answer should be specific.
Styles & brands we work with






Residential Roofing in Alamo Heights
Residential Roofing in Alamo Heights means working with the housing stock this city actually has, not the cookie-cutter subdivisions you see further north and west. We replace and repair roofs on 1930s cottages near Cambridge Elementary, mid-century ranches along Estes Avenue, and the newer construction that’s filled in around the Alamo Heights pool. A full roof replacement on a typical 1,800-square-foot Alamo Heights home runs $11,000 – $18,000, depending on shingle grade, decking condition, and whether the home has the layered original materials that slow down tear-off.
Repair Photography and Written Findings
Before we recommend a repair or replacement on an Alamo Heights roof, we document what’s actually there. Photos, measurements, and a written summary that shows the valley condition, flashing integrity, and decking health. You see what we see. If you’re home, we’ll walk you through it. If not, the report is emailed before any price is finalized.
Insurance-Ready Documentation
Alamo Heights homeowners dealing with hail damage need more than a handshake. We provide the documentation Texas insurance adjusters expect: dated photos of granule loss, impact marks, and wind creasing, plus a line-item scope of work that matches what the policy covers. This documentation matters later when the claim is being reviewed.
Roof Maintenance in Alamo Heights
Roof Maintenance in Alamo Heights isn’t optional. The mature live oaks that make this city beautiful also shed leaves, twigs, and occasionally limbs onto roof planes and into valleys. Trapped leaf litter holds moisture against shingles and flashing, which accelerates corrosion and feeds the moss and algae that thrive on shaded roof slopes. A standard maintenance visit, including cleaning valleys, tightening flashing, resealing penetrations, and a written condition report, runs $250 – $500. Homes with steep tile roofs or heavy tree coverage may run higher.
Valley and Flashing Service
The valleys on Alamo Heights roofs take more punishment than open-lot roofs in San Antonio. When leaves sit in a valley through a hot humid summer, the metal or shingle weave underneath is sitting in a damp, acidic microclimate. We clean, inspect, and when needed, rebuild valleys with custom metal and ice and water shield. This is the difference between a roof that lasts and one that leaks from the same spot every three years.
Flat Patio Cover Junctions
Many Alamo Heights homes have flat patio covers that tie into the main roof line, and the older valleys funnel water directly onto those junctions. We reinforce these intersections with custom metal transitions, replace the sealant if it’s cracked, and make sure water moves away from the house. This is one of the most common leak points in Alamo Heights specifically, and it’s often overlooked by crews that don’t work here regularly.
Trusted Brands We Service in Alamo Heights
We install and repair roofs using manufacturer-recognized shingle brands that include Owens Corning, IKO, and Atlas. For Alamo Heights homeowners, we stock common colors and profiles locally so a repair doesn’t wait on a distribution center in Dallas. Owens Corning Duration and IKO architectural lines cover most ranch-style homes in the area, and Atlas shingles are a strong choice for the wind and hail conditions we see here. If your roof carries a specific manufacturer warranty, we’ll ensure the repair work is done to that manufacturer’s spec. That matters at claim time.
See the difference
Before
After
Before
After
Before
AfterCommon Roofing Company Problems We See in Alamo Heights Homes
- Rotted decking hidden under original wood shake. Homes from the 1920s – 1950s often still have the original wood shake buried under later composition shingles. Water gets trapped between layers, rots the decking, and the problem stays invisible until someone actually opens the roof up.
- Valley corrosion from live oak leaf litter. The mature oaks that define Alamo Heights drop leaves into roof valleys year-round. When those leaves sit through humid springs, they hold moisture against metal and shingles, corroding flashing and rotting the underlayment beneath.
- Wind-load ratings that don’t match Alamo Heights requirements. Some contractors quote a standard San Antonio nailing pattern without checking Alamo Heights wind-load requirements. The wrong pattern can strip an architectural shingle’s 130 mph rating, which becomes a problem when a storm does real damage and the insurance adjuster checks.
- Flat patio cover junctions leaking after every heavy rain. The older valley designs on Alamo Heights homes funnel water directly onto flat patio covers. Without custom metal reinforcement at those junctions, the sealant fails, water backs up, and the same leak reappears season after season.
Pricing for Roofing Company in Alamo Heights, TX
Here’s what Alamo Heights homeowners can expect to pay. Roof repairs: $450 – $1,800. Roof maintenance visits: $250 – $500. Full roof replacement on a standard 1,800-square-foot home: $11,000 – $18,000 depending on shingle grade, decking condition, and how much of the original layered material needs to come off. Valley rebuilds with custom metal: $800 – $2,200 per valley. Decking replacement: $75 – $110 per sheet when it’s exposed. These are real ranges for the Alamo Heights market, not national averages. The written quote you get from Mercer Roofing is the exact price. No change orders. No surprise line items halfway through the job. Call (254) 276-4369 for a free estimate.
We Also Serve Cities Near Alamo Heights
While this page focuses on Alamo Heights, our crews also serve San Antonio, Schertz, Cibolo, and Boerne. If you’re in one of those communities and want the same written pricing and Threshold Standard service, check our Roofing Company hub page or Roofing Company in Alamo Heights for local details. The badge-at-the-door promise applies everywhere we work.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 Roofing Company in Alamo Heights
Yes, Alamo Heights homes should be re-roofed to a 130 mph wind rating, which is what most architectural shingle manufacturers including Owens Corning and IKO certify when installed with the correct nailing pattern and starter strip. The difference between a compliant install and a cheap one is six nails per shingle instead of four, a proper starter strip, and sealed valleys. That’s the standard we write into every Alamo Heights quote. Call (254) 276-4369 to schedule a free estimate and we’ll show you the exact Nail-It pattern in writing.
Because live oak leaf litter sits in valleys for months at a time and holds moisture directly against the valley metal and underlayment. On an open-lot San Antonio roof, leaf debris blows off. In Alamo Heights, it stays. That’s why we install ice and water shield in valleys as standard practice on Alamo Heights homes and why we rebuild valleys with custom metal instead of relying on woven shingles that trap debris. If your trees are dropping leaves onto the roof every spring, call (254) 276-4369 for a valley inspection.
It affects everything. When a hailstorm damages an Alamo Heights roof, the adjuster will check whether the previous install met the local wind rating. If the nailing pattern was wrong or the shingle’s rating was voided, the claim can be reduced or denied for “installation defect” rather than storm damage. Our documentation includes the nailing pattern, shingle type, and wind-load rating used on every job. That paperwork becomes evidence in your favor. For an exact quote on an insurance-ready re-roof, call (254) 276-4369.
It includes decking inspection and replacement of any rotted sections before shingles go on. It includes ice and water shield in all valleys and around penetrations. It includes a starter strip and the correct six-nail pattern for a 130 mph wind rating. It includes custom metal at the flat patio cover junctions so the old leak points don’t return. A cheap quote skips the decking, skips the valley shield, and hopes nobody opens the roof up. We write every one of these items into the quote so you can compare line by line. Call (254) 276-4369 for a free estimate.
Yes, roof replacements in Alamo Heights require a permit through the city, and the work must be inspected after the underlayment is installed and again after shingles and flashing are complete. We pull the permits, schedule the inspections, and stay on site until the final pass is signed. If a contractor suggests skipping the permit to save money, walk away. The savings never outweigh the liability. Our Roofing Company team handles the paperwork from start to finish.
If you have a leak, storm damage, or just want an honest assessment of what your Alamo Heights roof needs, call (254) 276-4369. The phone is answered by a real person, 24/7. You’ll get a written price before any work starts, and the technician who arrives will send their name and photo first and badge in at the door. That’s how we work in Alamo Heights.
Written by Grant Whitlock, Owner at Mercer Roofing Co San Antonio, serving Alamo Heights and surrounding communities.