Flashing Repair in San Antonio, TX

Flashing Repair in San Antonio, TX

Flashing repair in San Antonio typically costs between $250 and $650 for most homes, depending on how much metal needs replacing and how accessible the area is. Flashing is the metal material, usually galvanized steel or aluminum, that seals the joints where your roof meets a chimney, vent pipe, skylight, or wall. When it fails, water gets in. That’s the whole story. At Crestview Roofing Co San Antonio, we repair and replace flashing on all roof types, and every job starts with a written price before any work begins. You’ll also get before-and-after photos and a live arrival time you can track, so there’s zero guesswork about what happened up there.

If you’re seeing water stains on a ceiling or along a wall near the roofline, call us at (361) 209-8857. We’ll diagnose the flashing, show you what we found, and give you a fixed number before we touch anything. This page covers when flashing fails, what repair involves, what it costs in San Antonio, and how our process works from the first call to the final photo. If you need a broader look at what’s happening on your roof, start with our Roof Repair page for a full walkthrough of how we handle everything from leaks to full replacements.

When You Need Flashing Repair

Flashing doesn’t fail all at once. It usually gives you warning signs first, and in San Antonio’s climate, those warnings tend to show up after a hard storm or a long dry spell followed by heavy rain. Here’s what to watch for:

• Water stains on the ceiling near a chimney or wall: This is the most common sign. Water travels along the roofline and exits where the flashing has separated or corroded.
• Damp or discolored drywall around skylights: If the metal flashing around a skylight is lifting or the sealant has cracked, rain finds its way in along the frame.
• Visible rust or corrosion on metal near roof joints: San Antonio’s heat and humidity accelerate rust on older galvanized flashing. Once you see orange streaking or pitting, the metal is thinning and water will get through.
• Missing or curling shingles near a chimney or vent pipe: Flashing sits under the shingles. When shingles curl or blow off, the flashing is exposed and the water seal breaks.
• Granules in your gutters after a storm: This means shingles are degrading. Where shingle loss happens at a transition point, flashing is often involved too.
• Drafts or daylight visible around a roof penetration from inside the attic: If you can see light coming through around a vent pipe or chimney, the flashing has opened up enough for water and air to pass.

One thing specific to San Antonio homes: many houses built in the 1980s and 1990s used galvanized flashing that’s now reaching the end of its useful life. We regularly pull up flashing that’s paper-thin from rust on homes in Alamo Heights, Castle Hills, and the Northeast Side. If your home is in that age range and you haven’t had flashing touched since the original build, it’s worth getting it checked before the next big storm season.

Our Flashing Repair Process

Here’s how flashing repair works when you call Crestview Roofing Co San Antonio. It’s not complicated, but every step is documented so you know exactly what happened.

1. Call and talk to a live person. You reach someone right away, any time, day or night. We ask about what you’re seeing and schedule a time that works.
2. We arrive with a live arrival time you can track. You’ll know who’s coming and when they pull up. Our technicians are background-checked and uniformed, so the face at your door matches the one you expected.
3. We inspect the flashing and show you what we find. This means getting on the roof, checking the metal, the sealant, and the surrounding shingles. We take photos while we’re up there.
4. You get a written price before any work starts. The number on the estimate is the number on the invoice. No add-ons at the door, no “we found something else” unless you approve it in writing first.
5. We complete the repair and document it. Old flashing comes out, new metal goes in, sealant is applied, and we photograph the finished work. You get before-and-after photos sent to your phone.
6. You get a digital invoice and a written 365-day guarantee. Every repair is covered by our 365-Day Done Right Promise. If the repair fails within a year, we come back and correct it at no charge. No negotiation, no runaround.

Flashing Repair Pricing in San Antonio

Flashing repair in San Antonio runs $250 to $650 for most standard jobs. Simple vent-pipe flashing replacement is on the lower end of that range. Chimney flashing repair or replacement, which involves more metal and more labor, runs higher. Skylight flashing work often falls in the $400 to $650 range depending on the skylight size and roof pitch.

What actually drives the cost:

• Type of flashing: Vent pipe flashing is a single piece, quick to swap. Chimney and wall flashing involves cutting, bending, and fitting multiple pieces.
• Roof accessibility: A steep pitch or a chimney in a hard-to-reach spot adds labor time. San Antonio’s two-story homes with high chimneys take longer than a single-story ranch.
• Material: Standard galvanized steel is the most common. Aluminum and copper are options, and copper costs more but lasts decades longer. We work with manufacturer-backed materials from brands like GAF, CertainTeed, and Owens Corning, so you always know the material spec.
• Condition of surrounding shingles: If the flashing failed because the shingles around it are also degraded, those may need replacement too. We’ll show you photos and give you a separate written quote for that work before anything is done.
• Sealant and underlayment condition: Sometimes the flashing itself is fine but the sealant has dried and cracked. That’s a lower-cost fix. Other times the underlayment underneath has rotted from long-term moisture exposure, and that adds to the scope.

We give every customer a written price before work starts. That’s The Relay Standard, and it’s not negotiable on our side either. You’ll know the number before we pick up a tool. Call (361) 209-8857 for a free estimate. We’ll come out, inspect the flashing, and give you a number that holds.

Why San Antonio Weather Is Hard on Flashing

San Antonio’s weather pattern creates a specific set of problems for roof flashing. The city gets about 32 inches of rain a year, but it doesn’t fall evenly. We get intense, short-duration storms, often in spring and fall, where a lot of water hits the roof in a short window. Flashing has to channel that water quickly. If the metal is compromised or the sealant is cracked, those storms expose it immediately.

The other factor is heat. Summer temperatures routinely stay in the mid-to-upper 90s for weeks. That heat causes metal to expand and contract daily. Over years, this thermal cycling fatigues the metal at the bends and weakens sealant bonds. We see this on the South and West-facing slopes of homes all over San Antonio, from Stone Oak down to the Southside. A flashing failure on a 20-year-old roof in this climate isn’t unusual; it’s expected. Regular inspections catch it before it becomes a water damage problem inside the house.

Common Flashing Problems We See in San Antonio

After 25 years of working on roofs in this city, we can tell you the most frequent flashing failure patterns. Here they are, along with what causes them.

Chimney Flashing Separation

Chimney flashing has multiple parts: base flashing, step flashing, counter flashing, and a cap or cricket. If any one of these separates, water gets in. We often see this after a hard storm with wind-driven rain. The fix involves re-securing or replacing the individual flashing pieces and re-sealing the joints. This is one of the more involved flashing repairs because it requires working around the chimney structure, but it’s also one of the most common we handle.

Vent Pipe Boot Failure

The rubber boot around a vent pipe degrades in the San Antonio heat. It cracks, splits, or pulls away from the pipe. This is usually a straightforward fix: replace the boot or the entire pipe flashing assembly. Cost is on the lower end of the range, typically $250 to $400 depending on the pipe configuration and roof accessibility.

Wall Step Flashing Leaks

Where a roof meets a vertical wall, step flashing is woven between the shingle courses and the wall siding. If the siding was replaced and the flashing wasn’t properly re-fitted, or if the flashing pieces have slipped over time, water runs behind the wall. This type of leak often shows up as a wet patch on an interior wall rather than the ceiling. It takes a careful inspection to find because the entry point and the visible damage can be several feet apart.

Skylight Flashing Failure

Skylight flashing failures are usually the result of aging sealant or improper original installation. The fix depends on whether the flashing itself is intact. If it is, we re-seal and re-fasten. If not, the skylight flashing kit gets replaced. We work with skylight-compatible flashing materials that match the roof system, and we always document the before and after with photos.

Repair or Replace Flashing: What Makes More Sense

This is the question we hear most often in San Antonio: should we patch the flashing or replace it entirely? The honest answer depends on the age and condition of the metal.

If the flashing is less than 10 years old and the problem is a failed sealant joint or a single separated piece, a targeted repair makes sense. It’s less expensive and solves the problem when the underlying metal is still sound.

If the flashing is original to a roof that’s 20-plus years old, or if you can see visible rust and corrosion, replacement is the better call. Patching corroded metal buys you a season, not a long-term fix. San Antonio’s heat and storm cycles will open the patch again. We’ll show you photos of the existing flashing condition and give you a straight recommendation. You decide, and you get a written price either way.

Flashing Materials We Use

We install flashing made from materials that hold up in South Texas weather. Standard galvanized steel is the workhorse for most applications. It’s affordable, strong, and handles San Antonio’s heat and rain well when properly installed and sealed. For homes in areas with heavier tree coverage or higher moisture exposure, aluminum is a good option because it resists corrosion better than standard steel. Copper is the premium choice; it’s more expensive up front but it can last the life of the roof and then some.

We source flashing and roofing materials from manufacturers we trust, including GAF, CertainTeed, and Owens Corning. These are brands with decades of testing behind their products, and they stand behind their material warranties. When we install flashing as part of a repair, we use materials matched to the existing roof system so the repair integrates cleanly instead of looking like a patch.

Why Crestview Roofing Co San Antonio for Flashing Repair

Flashing repair is a small job compared to a full roof replacement, but it’s the repair that prevents the big job. If a flashing leak is ignored, it rots roof decking, damages insulation, and leads to interior water damage. A $350 flashing repair today prevents a $12,000 interior restoration and roof deck replacement later.

We built Crestview Roofing Co San Antonio on a simple idea: you should know exactly what a roofing job costs before it starts, and you should be able to see proof that the work was done right. That’s The Relay Visibility Guarantee, and it applies to every flashing repair we do, every time. You get a written price. You get before-and-after photos. You get a live arrival time. You get a digital invoice. And every repair is covered by our 365-Day Done Right Promise, in writing, included with every job.

Dylan Pace founded this company on the belief that roofing does not have to be a black box. You shouldn’t have to wonder if the roofer actually replaced what they said they replaced. You shouldn’t have to chase down a guarantee. You shouldn’t have to pay for the same repair twice. That’s why every flashing repair we do comes with a written guarantee and a free second visit if the repair fails within 365 days. No charge, no negotiation, no runaround.

FAQs – Flashing Repair

How much does flashing repair cost in San Antonio?

Flashing repair in San Antonio typically costs $250 to $650 for most homes. Simple vent pipe flashing replacement runs on the lower end, while chimney or skylight flashing work runs higher due to the additional metal and labor involved. The best way to get an exact price is to call (361) 209-8857 for a free estimate. We’ll inspect your roof and give you a written price before any work starts.

Can you fix flashing the same day you come out?

Yes, in most cases we can complete flashing repair on the same visit. Vent pipe flashing and simple step flashing repairs are usually done in one trip. Larger chimney flashing jobs may require a follow-up visit, but we’ll tell you that before we schedule. Call us and we’ll give you a realistic timeline based on what you’re seeing.

How long does flashing repair last?

A proper flashing repair using quality materials should last 10 to 15 years or more, depending on the material and the San Antonio weather exposure your roof gets. We cover every repair for 365 days under our 365-Day Done Right Promise, in writing. If the repair fails within that year, we correct it at no charge. After that, the lifespan depends on the material: copper outlasts aluminum, aluminum outlasts standard galvanized steel.

Is it cheaper to repair flashing or replace the whole roof?

Flashing repair is dramatically cheaper than a full roof replacement. A $300 to $600 flashing repair addresses a specific leak point, while a full roof replacement for a San Antonio home typically runs $8,000 to $20,000 or more depending on size and materials. The two are not comparable projects. If your flashing is failing but the rest of the roof is in good condition, repair is the right call. We’ll show you photos and give you a straight answer either way.

Do you offer free estimates for flashing repair in San Antonio?

Yes. We provide free estimates on all flashing repair work in San Antonio. Call (361) 209-8857, and we’ll schedule a time to inspect the flashing and give you a written price. The estimate is free, and the price is guaranteed before any work starts.

Areas We Serve

We repair flashing on homes throughout San Antonio, including Alamo Heights, Castle Hills, Stone Oak, the Northeast Side, the Northwest Side, the Southside, and surrounding communities in Bexar County. If you’re not sure whether we cover your neighborhood, call and ask. A live person answers.

Get Your Flashing Fixed Before the Next Storm

Flashing problems do not fix themselves. The longer water has a way into your roof, the more damage it does. If you’ve noticed a stain, a draft, or you simply haven’t had your flashing checked in years, now is the time. Call Crestview Roofing Co San Antonio at (361) 209-8857 for a free flashing repair estimate. You’ll get a live person, a real price, and a written guarantee on every repair. That’s how roofing should work.

Written by Dylan Pace, Owner at Crestview Roofing Co San Antonio, serving San Antonio.