Metal roofing
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Trusted Roofing Company for San Antonio Homeowners
When a San Antonio roof starts leaking or losing shingles after a Hill Country hailstorm, most homeowners face two worries: the cost of the work and the stranger who shows up to do it. Mercer Roofing Co San Antonio solves both. We’re a full-service Roofing Company in San Antonio founded in 2000, part of the Threshold Group family, and led by Grant Whitlock. Every technician who comes to your door is background-checked, identity-verified, uniformed, and badged with a photo ID, and we send you their name and photo before they arrive. You get a written price before any work starts, a written guarantee on every repair, and a live person on the phone 24/7. Call (254) 276-4369 for a free estimate.
This page covers everything a San Antonio homeowner needs to know about hiring a Roofing Company in San Antonio: what services cost, how inspections work, when maintenance makes sense, and how our 365-Day Done Right Promise protects you after the job is done.
Key Takeaways
- Written price first: No work starts at your San Antonio home until you’ve seen a written line-item price. No surprises on the invoice.
- Badge at the door: Every Mercer technician arrives in a marked uniform with a photo ID badge, and you get their name and photo before the visit.
- 365-Day Done Right Promise: If a repair isn’t right within a year, we make it right. Written guarantee included with every job.
- Live person, 24/7: You call, a human answers. Not a voicemail, not a call-back form.
- Real local expertise: We work throughout San Antonio and nearby communities including Schertz, Cibolo, Boerne, Kirby, and Alamo Heights.
Styles & brands we work with
Roofing Contractor
A Roofing Contractor is the licensed professional who installs, repairs, inspects, and maintains the roof system over your home or business, and in San Antonio that means dealing with intense UV exposure, spring hailstorms, and the occasional tropical system. Mercer Roofing Co San Antonio handles everything from minor flashing repairs to full tear-off and replacement. Most roof repairs in San Antonio run $350 to $1,850 depending on the materials involved and the size of the affected area. Full residential replacements typically land between $8,500 and $22,000 based on roof square footage, pitch, and shingle choice.
Licensed, Insured, and Badged
Every Mercer Roofing Co San Antonio contractor arrives with proof of insurance, a background check on file, and a photo ID badge you can verify at the door. That’s the Threshold Standard, and it’s the same standard we hold ourselves to on every job from a small repair to a full replacement.
When You Need a Contractor Instead of a Handyman
Roof work involves structural decking, underlayment, flashing, and ventilation. A handyman can replace a single shingle, but a San Antonio roofing contractor has the training and warranty backing to diagnose the whole system. We pull permits when required and work with manufacturer-recognized shingle brands like GAF and CertainTeed.
Roof Inspection
A Roof Inspection is a systematic evaluation of your roof’s condition from both the exterior and, when accessible, the attic, and it’s the highest-return service most San Antonio homeowners never schedule until something leaks. Mercer Roofing Co San Antonio performs inspections after hailstorms, before home purchases, and as part of annual maintenance plans. A standard residential roof inspection in San Antonio runs $150 to $400, and we credit that fee toward any repair we recommend if you hire us for the work. Insurance documentation and photo reports are included.
Storm and Hail Assessments
San Antonio hail storms can crack shingles, dent metal vents, and compromise flashing without leaving an obvious leak. We document every affected area with photos and measurements, then provide a written report you can use for insurance claims. Grant Whitlock’s team has walked thousands of storm-damaged roofs in Bexar County and surrounding areas.
Pre-Purchase Roof Inspections
Buying a home in Alamo Heights or Terrell Hills? A roof inspection before closing tells you whether the seller’s “five-year-old roof” is really five years old. We provide a written condition report, estimated remaining life, and a repair or replacement budget so you can negotiate from facts, not hope.
Commercial Roofing
Commercial Roofing covers flat and low-slope roof systems on offices, retail buildings, warehouses, and multifamily properties in San Antonio, where the punishing summer heat cycles and sudden downpours put these systems under stress. Mercer Roofing Co San Antonio installs and repairs TPO, EPDM, modified bitumen, and metal commercial roof systems. Commercial repair pricing in San Antonio typically ranges from $750 to $4,200 depending on the membrane type and damage extent. New commercial installations run $6 to $12 per square foot for most membrane systems.
Minimizing Business Disruption
We schedule commercial work around your operating hours when possible, and every project starts with a written price and a clear timeline. Our crews are uniformed, badged, and identity-verified, so your building manager always knows who’s on the roof and why. That’s the standard we’ve held since Mercer Roofing’s founding in 2000.
Preventative Commercial Maintenance
Most flat-roof failures in San Antonio start as small punctures, seam splits, or clogged drains. A scheduled maintenance program catches those issues before they become interior water damage. We offer quarterly and semi-annual commercial roof maintenance plans with written inspection reports after every visit.
Metal Roof Installation
Metal Roof Installation means replacing or upgrading your San Antonio home or building with a standing seam or metal shingle roof system, a growing choice in Texas because it handles hail, wind, and intense UV better than almost anything else. Mercer Roofing Co San Antonio installs standing seam systems and stone-coated metal shingle products. Residential metal roof installation in San Antonio typically runs $14,000 to $38,000 depending on roof size, product choice, and whether we’re doing a tear-off or installing over an existing roof. That’s roughly 2 to 3 times the cost of asphalt, and a well-installed metal roof lasts 40 to 70 years.
Standing Seam and Stone-Coated Options
Standing seam panels lock together with concealed fasteners that resist wind uplift and leaks. Stone-coated metal shingles look like traditional asphalt or tile from the street but carry the durability of steel. We help you compare both options against your budget and your HOA requirements before you commit.
Metal Roofs and the San Antonio Climate
Metal reflects more solar radiation than asphalt, which can cut attic temperatures and cooling loads during San Antonio summers. It also sheds hail better and doesn’t crack in freezing weather the way some tile products can. The tradeoff is the upfront cost and the need for proper flashing details around chimneys, skylights, and valleys, which is where installation quality separates a 40-year roof from a 10-year roof.
Residential Roofing
Residential Roofing means installing, repairing, and maintaining the asphalt shingle, metal, or tile roof that protects your San Antonio home and family, and it’s the core of what Mercer Roofing Co San Antonio does every day. We install and repair GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral products. Full asphalt shingle replacement in San Antonio typically runs $8,500 to $22,000. Individual repairs run $350 to $1,850. Every residential project starts with a written price, and every repair includes a written guarantee with a free second visit if the repair fails.
Shingle Roof Replacement
We strip the old roof to inspect the decking, replace any damaged wood, install new underlayment, and then lay the shingle system to manufacturer specifications. That’s the only way the material warranty and our 365-Day Done Right Promise actually work together. Shortcuts on underlayment or ventilation void both.
Storm Damage and Insurance Work
When a hailstorm hits Windcrest or Castle Hills, we document damage thoroughly and work directly with your insurance adjuster. We provide the same written pricing to your insurer that we provide to you, so there’s no inflated claim and no surprise out-of-pocket invoice later. A live person answers our phone 24/7 when storm season hits.
Roof Maintenance
Roof Maintenance is the scheduled upkeep of your existing roof system, including cleaning, sealing, re-caulking penetrations, tightening flashing, clearing debris, and catching small issues before they become San Antonio drywall stains. Mercer Roofing Co San Antonio offers annual and semi-annual maintenance plans for residential and commercial roofs. A typical residential roof maintenance visit in San Antonio runs $250 to $600, depending on roof size, accessibility, and the condition we find. Commercial plans are quoted per building.
What We Check on Every Visit
Our maintenance checklist includes pipe boots, vent collars, chimney flashing, valley metal, drip edge, attic ventilation, and gutter attachment. Each failing component gets a photo and a written recommendation with a price. You decide what to fix, and nothing gets done without your approval in writing.
Maintenance Plans in San Antonio
We build maintenance plans for homeowners in Boerne, Bulverde, and across the San Antonio metro who want scheduled visits rather than emergency calls. Regular maintenance extends the life of an asphalt roof by years, and it’s the least expensive way to avoid a five-figure replacement.
Roof Coating
Roof Coating is a liquid-applied protective membrane that seals, reflects, and extends the life of an existing roof, most often used on flat and low-slope commercial roofs in San Antonio but increasingly on residential metal roofs and flat-roof additions. Mercer Roofing Co San Antonio applies silicone, acrylic, and elastomeric coating systems. Basic residential roof coating applications in San Antonio run $1,500 to $4,500. Commercial coating projects typically run $3 to $7 per square foot depending on surface condition and product choice. Coatings add 10 to 20 years of life to an aging but structurally sound roof.
Energy Savings and Reflectivity
Silicone and white acrylic coatings reflect a significant portion of San Antonio’s solar load, which reduces rooftop surface temperatures and can lower cooling costs in the space below. That’s why we see so many commercial building owners coating instead of replacing when the underlying structure is still sound.
When Coating Makes Sense
Coating works on roofs that still have good decking and insulation but show surface wear: small cracks, minor seam separation, general weathering. If the deck is wet or failing, coating won’t help, and we’ll tell you that plainly. A written price and a written recommendation come before any coating work starts.
Free Roof Estimate
A Free Roof Estimate is a no-obligation written price for your roofing project in San Antonio, provided after we inspect the roof, measure the scope, and discuss material options with you. Mercer Roofing Co San Antonio includes this with every visit. We don’t charge for estimates, and we don’t start any work until you’ve reviewed and approved a written line-item price. Most estimates take 45 to 90 minutes on site, and we schedule them at your convenience. Call (254) 276-4369 to book yours.
What’s in the Written Price
Your written estimate includes materials with brand and product line, labor, tear-off and disposal if applicable, decking repair allowance, flashing, underlayment, and ventilation work. Nothing is hidden in verbal agreements. The number you approve is the number you pay, unless you add scope during the project, and even then you get a written change order first.
Who Shows Up for the Estimate
You’ll get the name and photo of the Mercerra technician before the visit, and they’ll arrive in uniform with a photo ID badge. That’s standard on every Mercer Roofing Co San Antonio visit, whether it’s an estimate, an inspection, or a full installation. Grant Whitlock’s team operates the same way in San Antonio as in Schertz and Cibolo.
See the difference
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After
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After
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AfterBrands We Service
We install and repair GAF shingle systems, including Timberline HDZ and Camelot lines, and we follow GAF’s installation specifications exactly so the manufacturer’s warranty stays intact. San Antonio heat and hail demand correct nail placement, ventilation, and underlayment, and we’ve been doing that work since 2000.
We also work with CertainTeed and Owens Corning products regularly. CertainTeed’s Landmark line is a strong mid-price option for San Antonio homes, and Owens Corning Duration shingles carry a solid wind warranty that matters in Hill Country storm zones. Whether you have Boral tile, IKO, Atlas, Tamko, or any other make, we can assess, repair, and replace it correctly.
Signs You Need a Pro Right Now
- Water stains on ceilings or walls. A dark or yellowing stain means water is already inside your San Antonio home. The roof leak may be feet away from the stain, traveling along a rafter or decking seam. The longer water sits, the more the decking and insulation decay.
- Granules collecting in gutters. Asphalt shingles shed granules as they age, and heavy granule loss means the shingle is losing its UV protection. If your San Antonio gutters look like a sand trap after every rain, the shingles are likely past mid-life.
- Missing, cracked, or curling shingles. One missing shingle invites wind-driven rain under the field. Curling at the edges signals the adhesive strip has failed. In San Antonio wind events, one loose shingle peels neighbors fast.
- Daylight visible in the attic. If you can see sunlight through the roof deck from your attic, water can get through the same gaps. This is a clear decking or flashing failure. Call before the next storm, not after.
- Rusting or loose flashing around chimneys and vents. Flashing is the most common leak point on San Antonio roofs. Rust and separation at the pipe boot or chimney saddle mean water is already working its way under the shingle course.
Our Process, Step by Step
- 1
You call, a human answers. Our phone line at (254) 276-4369 is answered by a live person 24/7. You tell us what you’re seeing, and we schedule a visit at a time that works for you.
- 2
You get a name and a photo before the visit. We send the technician’s name, photo, and arrival window to you before the appointment. The same technician arrives in a marked uniform wearing a photo ID badge they present at the door.
- 3
We inspect and document. The technician walks the roof, photographs problem areas, checks the attic when accessible, and tests flashing, pipe boots, and ventilation. You get a plain-English explanation of what’s found, what it means, and what options you have.
- 4
You get a written line-item price. Every recommendation comes with a written price before any work starts. If we’re filing an insurance claim, the same written price goes to your adjuster. Nothing is verbal, nothing is conditional.
- 5
Work is done, then verified. Our crew completes the work to manufacturer specification, cleans up the site, and walks the roof again with a supervisor. Every repair includes a written 365-Day Done Right Promise: if it’s not right within a year, we make it right at no additional cost.
How Much Does Roofing Company Cost in San Antonio?
A typical roof repair in San Antonio runs $350 to $1,850, while a full asphalt shingle replacement on a standard 2,000-square-foot home runs $8,500 to $22,000. Metal roof installation runs $14,000 to $38,000. Roof inspections run $150 to $400 and are credited toward repairs if you hire us. Commercial roofing work varies more widely: $750 to $4,200 for repairs and $6 to $12 per square foot for new membrane systems.
What moves the price most is roof size, pitch, accessibility, decking condition, and the material you choose. A steep roof in Terrell Hills with multiple valleys costs more than a simple gable roof in Kirby. Worn decking adds $2 to $4 per square foot when we find it during tear-off. The best way to avoid overpaying is to get a written line-item price from a contractor who shows you exactly where every dollar goes. Our free estimates do that. They include tear-off, disposal, materials by brand, labor, flashing, underlayment, and ventilation work. You see every line before you commit to anything. Call (254) 276-4369 to schedule your free estimate in San Antonio.
Our Service Area Near San Antonio
Mercer Roofing Co San Antonio serves the entire San Antonio metro and surrounding communities. We regularly work in Schertz, Cibolo, Boerne, Kirby, Floresville, Windcrest, Bulverde, Alamo Heights, Terrell Hills, Castle Hills, and Lackland AFB. Most San Antonio residents get a scheduled visit within a few business days, and storm response times may be longer during peak hail season. If you’re in a nearby community, check our Roofing Company in Schertz or Roofing Company in Cibolo pages for local details. We’re also the team behind our home page’s full service list, including Roofing Company in San Antonio services and local guides.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About Roofing Company in San Antonio
A roofing company is a business of licensed, insured professionals who install, repair, inspect, and maintain roof systems. Mercer Roofing Co San Antonio has served the area since 2000 and is part of the Threshold Group family. Every technician is background-checked, identity-verified, and badged at your door.
Most residential asphalt shingle replacements in San Antonio take 1 to 3 days, depending on roof size, pitch, weather, and the condition of the decking underneath. Metal installations typically take 3 to 7 days. You’ll get a written timeline with your written price before any work starts. Call (254) 276-4369 for a free estimate and a timeline specific to your roof.
Repairs run $350 to $1,850, full asphalt replacements $8,500 to $22,000, and metal roofs $14,000 to $38,000 in the San Antonio market. The exact price depends on roof size, pitch, decking condition, and materials. Our free estimates include a written line-item price so you know exactly what you’re paying before you approve anything.
Yes. We install and repair GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral products, and we follow each manufacturer’s installation specifications so warranties remain valid. Whether you know your brand or not, we can identify it on site and match compatible materials for repairs. Call (254) 276-4369 for a free estimate.
Yes. A live person answers our phone 24/7 at (254) 276-4369, so you can report a leak or storm damage any time and get a real conversation, not a voicemail. We prioritize active leaks and wind damage. Every emergency repair still includes a written price before work starts and a written guarantee after.
Every Mercer Roofing Co San Antonio repair includes a written 365-Day Done Right Promise: if the work isn’t right within a year, we make it right at no cost. That includes a free second visit if a repair fails. Material warranties from manufacturers like GAF and CertainTeed are separate and we register them for you where applicable.
You don’t need to do much. Clear access to the attic if possible, move vehicles away from the work area if repairs are planned, and secure pets. Our technician will arrive in uniform with a photo ID badge, and you’ll already have their name and photo from us before the visit. The inspection typically takes 45 to 90 minutes.
Schedule Your Roofing Company Service in San Antonio Today
Whether you need a repair, a full replacement, or just a straight answer about the condition of your San Antonio roof, we’re ready to help. Call (254) 276-4369 to speak with a live person and schedule your free estimate. You’ll get a written price, a clear explanation of the work, and a badged, background-checked professional at your door, every time.
Written by Grant Whitlock, Owner at Mercer Roofing Co San Antonio, serving San Antonio since 2000.