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W Wannamaker Roofing San Antonio's Trusted Roofer

Roof Replacement in San Antonio

When a repair won't cut it anymore, we replace your roof the right way — clean tear-off, fresh decking, premium underlayment, and workmanship that actually lasts.

Replacing a roof is one of the bigger investments a San Antonio homeowner makes. It's also one of the easiest to get wrong — the industry is full of storm chasers, volume shops, and fly-by-night crews who cut corners under the shingles where nobody looks. We do the opposite. Every replacement we do is built to outlast the warranty on paper.

When does a roof actually need replacement?

A roof in San Antonio rarely fails for one reason — it's almost always a combination. Here's what we look for when we inspect:

  • Age beyond warranty. A standard 3-tab shingle roof installed in San Antonio's sun and hail lasts 18–22 years. Architectural shingles last 25–28. Past that point, replacement beats ongoing repair.
  • Widespread granule loss. If your gutters are full of dark granules and shingles look bald from the street, UV degradation is terminal — no repair brings those granules back.
  • Hail bruising across multiple slopes. One hail strike per square foot on three slopes is generally enough for a full insurance-covered replacement under Texas claims standards.
  • Active leaks in multiple locations. A single leak usually means a flashing or single-shingle problem. Multiple simultaneous leaks typically mean the system has failed.
  • Decking sag or soft spots. If we can feel the deck flexing under our weight, moisture has compromised the structure and spot repair won't fix it.

What our replacement process looks like

  1. Free on-site inspection. We climb the roof and the attic, take 30+ photos, and send you a written report with our honest recommendation. If you don't need a replacement, we'll tell you.
  2. Line-item written estimate. You see the price of shingles, underlayment, flashing, decking replacement (per sheet), ridge vent, starter, drip edge, labor, dump fee — everything. No vague bundles.
  3. Material selection. We walk you through GAF, Owens Corning, and CertainTeed options with honest comparisons on warranty, wind rating, and look. Class 4 impact-resistant is always worth discussing for the insurance discount.
  4. Scheduling around weather. We confirm the install date 48 hours out based on the forecast. No chances taken — if rain is coming, we move it.
  5. Property protection. Tarps over landscaping, plywood over A/C units, magnet sweeps for the driveway and yard. We leave it cleaner than we found it.
  6. Tear-off and decking inspection. Old shingles, underlayment, and drip edge come off down to the deck. Every sheet gets checked. Bad sheets get replaced before anything else goes back on.
  7. Proper installation. Ice-and-water shield in valleys, synthetic underlayment everywhere else, new flashing around every penetration, starter strip at eaves and rakes, shingles installed per manufacturer spec (nail placement matters — most warranty claims get denied because of nail location, not material failure), ridge vent and ridge cap to finish.
  8. Final walkthrough. We walk the property with you, magnet-sweep a second time, review the warranty paperwork, and register your manufacturer warranty before we leave.

What San Antonio homeowners should know about materials

Texas weather is uniquely brutal on roofs. Summer surface temperatures regularly exceed 160°F, hail events are the norm from April through June, and sustained winds during severe weather can strip poorly-installed shingles in minutes. Material choice matters.

Architectural asphalt shingles are the workhorse of San Antonio — the GAF Timberline HDZ with LayerLock and HDZ nail zone is our default recommendation for most homes. It carries a 30-year warranty, a 130 mph wind rating, and an attractive shadow line. Class 4 impact-resistant shingles add roughly 10–15% to the price but often qualify homeowners for a 20–28% insurance premium discount that pays the upgrade back in 3–5 years. Standing seam metal lasts 50+ years and reflects heat, which can reduce attic temperatures by 30°F. Tile gives you the premium Texas look and 50+ year life but requires structural evaluation — many older San Antonio homes were built for asphalt and need reinforcement for tile.

Why homeowners choose us over the big-name roofers

Most of our new customers have already gotten quotes from two or three other companies before they call us. What they usually tell us: our price isn't the cheapest and isn't the most expensive — what's different is our estimate actually explains what we're doing. They can see the line items. They understand why Class 4 is priced differently from Class 3. They know exactly how many sheets of decking are assumed. That kind of transparency is rare in the roofing industry, and it's the reason our referral rate is so high.

Top questions we hear

How much does a roof replacement cost in San Antonio?

For a typical 2,000 sq ft San Antonio home, budget $9,500–$16,000 for asphalt shingles, $18,000–$35,000 for standing seam metal, and $22,000–$45,000 for tile. The biggest variables are pitch, number of existing layers, decking condition, and shingle class — Class 4 impact-resistant shingles add 10–15% but often pay back through insurance discounts.

How long does a full roof replacement take?

Most asphalt shingle replacements on San Antonio homes are a single-day job — tear-off in the morning, install by afternoon, clean up before dark. Larger or steeper homes, metal, and tile take 2–5 days. We always watch the weather and won't open a roof if rain is in the forecast.

Do I need to be home during the install?

No — you don't need to take the day off. We do ask that you move any cars out of the driveway and secure anything in the attic that's directly under the decking (the vibration from nail guns can knock things loose). Pets are usually happier inside or at a friend's for the day.

What warranty comes with a new roof?

Manufacturer warranties range from 25 years on standard architectural shingles to 50 years on premium products like GAF Timberline HDZ or Owens Corning Duration Flex. Because we're certified installers, we can extend enhanced warranties that cover labor and tear-off. On top of the manufacturer warranty, we provide a 5-year workmanship warranty on every replacement.

Will you replace the decking if it's damaged?

Yes. Once we tear off the old roof we inspect every sheet of decking. Rotted, delaminated, or broken boards get replaced. We itemize this in the estimate with a per-sheet price so there are no surprises — you only pay for sheets we actually replace.

Can you help with financing?

Yes, we work with several lenders who specialize in roof financing, including zero-down and same-as-cash options for qualified buyers. We'll walk you through the options without any pressure to choose financing — some homeowners just want to know it's available.

Deep FAQ — everything about roof replacement

Grouped by topic. Tap any question to expand.

Cost & timing

What affects the cost of roof replacement?

Eight cost drivers: square footage, pitch (steeper = more labor), stories, layers to tear off, decking condition, material selection, flashing complexity (valleys, dormers, chimneys), and code upgrades. On a typical 2,000 sq ft San Antonio home: $9,500–$16,000 asphalt, $18,000–$35,000 metal, $22,000–$45,000 tile. Complexity can push any of these 20–30% higher.

How long does roof replacement take?

Most asphalt replacements on SA homes: one day. Metal and tile: 2–5 days. Very large or complex roofs: up to a week. We schedule around weather — we won't open a roof if rain is forecasted. Most projects we confirm the install date 48 hours out based on forecast.

What should I ask before choosing a roof replacement contractor?

Fifteen questions: licensing, general liability coverage amount, workers' comp coverage, manufacturer certifications, years in business, local references, permit handling, decking replacement pricing, warranty length, workmanship warranty details, dumpster placement, project duration, crew supervision, payment schedule, and — most critically — line-item written estimate.

How do I prepare for a roof replacement?

Week before: confirm HOA approval if required, confirm material selection, confirm schedule based on weather. Day before: move cars from driveway, secure attic contents, remove wall hangings on top floor, plan for pets elsewhere. Day of: stay off roof, expect continuous noise 7am–5pm, expect trash bin in driveway. Confirm magnet-sweep was done before you drive after.

Quality installation

What makes a high-quality roof replacement?

Seven quality markers: (1) Complete tear-off to decking (not overlay); (2) Decking inspection and replacement where needed; (3) Ice-and-water shield in valleys and penetrations; (4) Synthetic underlayment on the field; (5) Properly-spaced nails in manufacturer's zone; (6) New flashing everywhere — not reused; (7) Proper ridge ventilation. If any of these are missing, you've got a problem-in-waiting.

How does the installation process work?

Standard sequence: property protection (tarps, plywood over A/C), tear-off to decking, decking inspection and replacement, drip edge install, ice-and-water shield in valleys, synthetic underlayment field install, starter strip install, shingle/panel install with proper fastening, penetration flashing, ridge vent/cap install, final inspection, magnet sweep (twice), owner walkthrough, warranty registration.

What mistakes should I avoid with roof installation?

Common contractor corner-cutting: reusing old flashing, skipping ice-and-water shield, 4-nail patterns instead of 6, no decking replacement allowance in quote, shingles installed on wet deck, working in rain, staples instead of nails, no starter strip, overdriven nails, and — biggest — using a permit-free contractor when your city requires one (your insurance and resale hinge on proper permits).

How do professionals handle roof replacement?

A professional crew has designated roles: foreman coordinates and inspects, tear-off crew focuses on clean removal and decking inspection, install crew handles precision work (valleys, flashing, penetrations), cleanup crew runs magnet sweeps multiple times. Single-person operations cutting every corner to finish in a day don't produce quality work regardless of price. Five people plus a foreman for a day beats three people for two days, every time.

How does weather impact roof replacement?

We won't open a roof if rain is in the forecast — wet decking invites problems later. High winds stop work (safety and install quality). Extreme heat slows work and requires early-morning starts. Cold weather (below ~45°F) affects shingle sealing; we compensate with warm-weather seal downtime. Scheduling flexibility is built into every project — we'd rather reschedule than rush.

Material & decisions

How do I know if I need roof replacement vs repair?

Replacement is appropriate when: age 20+ years, visible wear across multiple slopes (not just one), multiple leak locations, decking sag or rot, or hail claim covers replacement. Repair is appropriate when: single leak at a specific penetration, roof under 15 years old with healthy field, isolated wind damage, or minor flashing failure. We tell you honestly which situation yours is.

How do I choose the best option for roof materials?

Match material to home, neighborhood, and horizon: staying 5 years → stick with asphalt to maximize ROI; staying 10+ → consider metal's lifetime economics; classic Spanish/Mediterranean style → tile is the architectural answer; modern/contemporary → metal or clean architectural shingle; high hail exposure → Class 4 regardless of material type.

How do I compare options for roof replacement?

Get three detailed, line-item quotes against the same scope. Compare: materials specified (brand + product line), warranty structure (manufacturer + labor), decking replacement price per sheet, flashing items included, underlayment type, nail pattern, ventilation type, install duration, contractor certifications, workmanship warranty, and references. Lowest price is rarely the best value.

What happens if I delay roof replacement?

Progression is consistent: leaks appear at stress points, drywall stains, decking moisture compounds, insulation saturates, framing rots. A replacement that was $14,000 today becomes $18,000+ six months later (decking, drywall repair, insulation, possible framing) — and you've been living with interior damage and potential mold during that time.

What are common problems with roof replacement?

Real-world issues we fix on other contractors' work: water in attic from improperly-flashed chimney; missing shingle tabs from 4-nail install; starter strip omitted causing wind uplift at eaves; ice-and-water shield skipped in valleys; ridge vent incorrectly cut allowing wind-driven rain; flashing reused when it should have been replaced. All preventable with proper install protocol.

Warranties & protection

What are the benefits of roof warranties?

Three-tier protection: (1) Manufacturer material warranty — replaces defective shingles (rare but real); (2) Enhanced system warranty — available only through certified installers, covers labor and tear-off for 25–50 years; (3) Contractor workmanship warranty — covers install errors for 2–10 years. Combined, you're protected against material defect, install error, and catastrophic failure.

What makes a high-quality roof warranty?

Four markers: (1) Specifies whether material-only or system (labor included); (2) Transferable to a new owner (major resale factor); (3) Identifies both manufacturer obligations and contractor obligations clearly; (4) Not voided by common situations (satellite dish install, solar, routine maintenance). Warranties you can't read clearly or that have 20 exclusions aren't warranties — they're marketing.

How can I prevent issues with roof warranties?

Register the warranty within the window (often 30–60 days). Keep original paperwork and the contractor's estimate. Don't let unapproved contractors work on the roof — third-party work often voids manufacturer coverage. Don't remove manufacturer-required components (ventilation, specific underlayment). Schedule periodic inspections per warranty maintenance requirements.

Ready for a straight answer on your roof?

Free, no-pressure inspection with photo-documented findings. Most inspections done within 48 hours.