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W Wannamaker Roofing San Antonio's Trusted Roofer

Roof Repair in San Antonio

Small problem, big problem — if water is coming in or a shingle is missing, we diagnose the real cause and fix it right the first time.

Most roof problems in San Antonio don't need a new roof — they need a competent repair. The trick is finding a roofer willing to do the small job properly instead of using a leak as an excuse to push a full replacement. We take repairs seriously. They're often how a homeowner first meets us, and how we earn the replacement job down the road.

The repairs we do most often

  • Active leak diagnosis and repair. Water enters at one point and travels along framing before showing up on your ceiling — sometimes 10+ feet from the actual entry. We find the entry, not the symptom.
  • Missing or broken shingles. High winds lift shingle tabs. A broken seal means the next wind event takes them. We replace the section, re-seal the surrounding field, and make sure the repair blends visually where possible.
  • Pipe boot failure. The rubber collar on plumbing vent pipes cracks from UV after 8–12 years in San Antonio sun. When it fails, water pours straight into the attic. A new boot is cheap and takes 20 minutes — but if it's gone unnoticed, the decking damage underneath may need repair too.
  • Flashing and chimney work. Step flashing around a chimney is where 70% of the leaks we see originate. Proper fix means pulling shingles, replacing flashing, re-installing per code with a cricket if needed.
  • Valley repairs. Valleys carry more water than any other part of the roof. When they leak, either underlayment has failed or the shingle install was wrong. Fix requires pulling shingles and starting over — done right, it won't leak again.
  • Ridge and hip cap repair. The caps take the brunt of wind. Sun degradation makes them brittle. Replacement is straightforward and usually combines with ridge vent work.
  • Satellite dish or solar mount remediation. Penetrations that weren't sealed properly when installed. We re-flash and re-seal the penetration so it stops leaking without removing the fixture.

How we diagnose leaks

The inside of your ceiling is the last place a leak shows up — by then the water has already traveled from its entry point on the roof, through the decking, along rafters, down insulation, and finally saturated enough drywall to be visible. Finding the entry point is detective work:

  1. We start inside. Stain pattern, staining age (fresh vs old), and exact location narrow down the entry zone on the roof.
  2. We inspect the attic above the stain — wet insulation, stained rafters, and rust on nail tips tell us where water is actively hitting.
  3. On the roof, we check the most likely suspects — penetrations (pipe boots, chimneys, skylights, dormers), valleys, and flashing within a 10-foot radius of the attic findings.
  4. When a visual inspection doesn't find it, we water-test — running a controlled stream of water while someone watches the attic. Slow leaks almost always give themselves up this way.

Once we find the entry point, we quote the repair, do the work, and verify. That's the job.

When repair beats replacement

If your roof is under 15 years old, the shingle field looks healthy, and the leak is a localized failure at a specific penetration or flashing point — repair is the right call. A $600 repair can easily buy you another 10 years of roof life in San Antonio. We're not going to talk you into a $14,000 replacement you don't need. Plenty of other roofers will.

When repair is a band-aid

If your roof is 22+ years old, shingles are cupping or curling across multiple slopes, granule loss is severe, and this is your second or third leak in six months — repair is throwing good money after bad. We'll tell you straight. Same goes if the underlayment has clearly failed: patch-fixing individual spots won't hold because water has already found dozens of other paths. In those cases, we'll explain what we're seeing, show you photos, and let you decide — with no pressure.

Top questions we hear

How much does roof repair cost in San Antonio?

Most common repairs run $300–$1,200. A handful of replacement shingles: $300–$500. Pipe boot or flashing replacement: $400–$800. Chimney flashing rebuild: $700–$1,500. Valley or large flashing work: $1,000–$2,500. We price by the job, not by the hour, so you'll know the number before any work starts.

How fast can you get out here?

For active leaks, usually same day or next day. For non-urgent repairs and inspections, we typically schedule within 3–5 business days. If you're dealing with water actively coming in, call us — we can often tarp the affected area immediately while we schedule the repair.

Can a roof repair really stop a leak — or do I need to replace the roof?

Depends on the cause. If it's a single failure point — a cracked pipe boot, lifted flashing, a missing shingle, a chimney joint — repair absolutely solves it. If the shingles themselves are failing across multiple slopes, repairs are a short-term fix. We'll tell you honestly which situation yours is. We don't push replacement when repair will last.

Do you warranty your repairs?

Yes. Every repair comes with a 2-year workmanship warranty. If water comes through the same spot during that window, we come back and fix it — no charge, no argument.

Will insurance cover a roof repair?

Usually not — most insurance policies have deductibles high enough that small repairs don't hit the threshold. Insurance typically covers repair or replacement when damage is from a specific covered event like hail or wind. If that's your situation, call us before you file — we can help you decide whether a claim makes sense.

Can I DIY this?

Honestly, some simple fixes are DIY-able — a missing shingle, for example. What trips up most DIY'ers is water follows the path of least resistance, which means the spot leaking inside often isn't where the failure is on the roof. We find the actual source first, then fix it. If you've already tried and the leak came back, that's almost always why.

Deep FAQ — roof repair in San Antonio

Grouped by topic. Tap any question to expand.

Common repairs

What are common problems with roof flashing?

Flashing fails at (1) Chimneys — step flashing corrodes or seals crack, ~70% of leaks we see; (2) Roof-to-wall transitions — counterflashing pulls away over time; (3) Skylights — seals degrade; (4) Pipe penetrations — boot rubber cracks after 8–12 years in SA sun; (5) Valleys — underlayment fails or shingles weren't cut correctly. Proper repair means replacing flashing, not re-sealing over failures.

How can I prevent issues with roof flashing?

Four preventive steps: (1) Inspect pipe boots every 3–5 years — they're the weakest component; (2) Clear debris from behind chimney crickets so water doesn't back up; (3) Watch for rust on exposed flashing edges and replace when showing; (4) Never apply roofing tar as a fix — it cracks within a year and hides the real issue. Replace flashing components, don't patch them.

What happens if I delay roof flashing repair?

Leaks at flashing points compound fast because water travels along framing before showing inside. A pinhole leak in chimney flashing at year 1 → ceiling stain at year 1.5 → wet insulation at year 2 → rotten decking at year 3 → rotten rafter at year 5. Fix at year 1 is $600; fix at year 5 is $6,000+ with interior repair, insulation replacement, and potential structural work.

How do I prepare for roof leak repair?

Document everything first: photos of ceiling stains, attic water tracks, and any visible exterior damage. Put buckets under active drips. Move furniture and electronics out of the drip zone. Don't try to patch from inside — it hides the leak source. If the ceiling is sagging, poke a small hole to release trapped water (saves the drywall from collapsing). Then call us.

Leaks & diagnosis

What are common problems with roof leaks?

Top five causes we find in San Antonio: (1) Pipe boot failure — cracked rubber collar; (2) Chimney flashing failure — separated step flashing or cracked sealant; (3) Missing shingles — wind-lifted tabs; (4) Valley underlayment failure — original felt paper aged out; (5) Skylight seal failure — UV-degraded rubber gaskets. 85% of our leak repairs fall into one of these five.

How do I know if I need a roof leak repair?

Signs beyond visible ceiling stains: musty smell in the attic, visible water tracks on rafters, wet insulation, granules concentrated at one downspout, rust on nails visible in attic, daylight visible through decking from inside the attic, stains on interior walls (not just ceilings — water travels). If any of these are present, schedule an inspection now.

How do I choose the best option for roof leak repair?

First, diagnose accurately — identify the actual entry point, not just where it shows inside. Then pick the right fix: boot replacement ($300–500), flashing rebuild ($700–1,500), shingle replacement ($300–800), valley rebuild ($1,500–3,000). Avoid "sealant everywhere" fixes — tar and silicone hide the real problem for 6–12 months.

How do I compare options for roof leak repair?

Ask each contractor: what's the actual entry point (they should show you photos)? What's the cause (specific component failure)? What's the fix (component replacement vs sealant)? What's the warranty? Range of quotes for the same leak should be relatively tight — huge variance usually means contractors are diagnosing differently, which is a red flag for accuracy.

What should I ask before choosing a repair contractor?

Five questions: (1) Will you diagnose with photos from the roof and attic? (2) Is the fix component-replacement or sealant-based? (3) What's the repair warranty length? (4) If the leak returns within the warranty, do you come back no-charge? (5) Will you quote a full roof inspection so I know what else to watch?

Roof lifespan & materials

What impacts the lifespan of a roof?

Five factors: (1) Material — asphalt 25yr, metal 50yr, tile 50-75yr, slate 75-150yr; (2) Install quality — ~50% of early failures trace to install, not material; (3) Ventilation — inadequate attic venting bakes shingles; (4) Climate exposure — SA's UV, heat, and hail are all harsh; (5) Maintenance — annual inspection catches small issues before they compound.

What are common problems with roof lifespan?

Usually premature failure — roofs dying 5–10 years before expected. Common causes: poor install (not enough nails, wrong nail placement, skipped underlayment components), poor ventilation (attic heat cooks shingles), repeated hail damage without Class 4 upgrade, and roof neglect (no maintenance, debris retention, ignored flashing issues).

How do I know if I need roof materials replaced?

Whole-roof replacement indicators: (1) Age within 2–3 years of product warranty end; (2) Visible aging across all slopes, not just one; (3) Multiple leaks in past 12 months; (4) Significant granule loss / cupping / curling; (5) Decking feels spongy when walked. Any 2–3 together typically means replacement is more economical than ongoing repair.

Decking & structure

What are the benefits of roof decking?

Roof decking is the plywood or OSB layer that shingles attach to — the roof's structural foundation. Intact decking: holds fasteners securely, resists nail pullout in wind, prevents shingle sag, maintains wind rating of the shingles above, prevents water penetration to the interior. Bad decking undermines every other roofing system component, regardless of shingle quality.

What are common problems with roof decking?

Three we see regularly: (1) Delamination — OSB layers separating from moisture damage; (2) Sagging — heavy snow load or long-term water damage weakening boards between rafters; (3) Rot — localized water damage creating soft spots. Most common at valleys, roof-to-wall transitions, and around failed flashings.

What impacts the lifespan of roof decking?

Primarily water intrusion. Dry decking lasts 50+ years; wet decking rots in 2–5 years. Keeping decking dry depends on proper flashing, intact underlayment, and ventilation (moisture from the attic side also attacks decking). Secondarily: heavy loads (tile, solar) require adequate rafter spacing and deck thickness.

Got a leak or a loose shingle?

Call us or request an inspection — we'll find the actual problem and tell you exactly what it costs to fix.