Flashing Repair in Dallas, TX

Flashing Repair in Dallas, TX

Flashing repair in Dallas typically costs between $300 and $800 for most single-area fixes, with full roof flashing replacement running $1,200 to $3,500 depending on roof size and penetration count. Most flashing failures around chimneys, skylights, and vent pipes can be repaired the same day we diagnose them. If you’re seeing water stains on ceilings or walls, you may need Leak Repair-call Mercer Roofing Co Dallas at (432) 302-5605 and we’ll send a background-checked technician to assess it before the next North Texas storm rolls through.

Flashing is the thin metal material installed at every seam, joint, and penetration on your roof. It directs water away from chimneys, skylights, plumbing vents, dormer walls, and valleys where two roof planes meet. When flashing cracks, pulls away, or rusts through, water gets behind it. And once water is behind the flashing, it moves fast through the decking and into your home. Our Roof Repair in Dallas work includes flashing as a core discipline because we see so many leaks that start small at a flashing point and turn into bigger problems.

Mercer Roofing has been roofing Dallas homes since 2000. Every flashing repair we do comes with a written price before we start and the 365-Day Done Right Promise in writing. If the flashing work isn’t right within a year, we come back and make it right at no charge. That’s not a slogan. It’s on the paperwork.

When You Need Flashing Repair in Dallas

Dallas roofing takes a beating. Between April and June, hail and high wind are common. July and August bring weeks of 100-degree heat that makes metal flashing expand and contract, which loosens sealants over time. Here are the most common situations where Dallas homeowners call us for flashing repair:

• Water stains on ceilings or upper walls after heavy rain. In neighborhoods like Lakewood, Preston Hollow, and East Dallas, we often trace interior stains back to failed chimney flashing or a cracked vent pipe boot. The leak rarely starts where the stain shows up, because water travels along rafters before it drops.
• Chimney leaks. Chimney flashing has multiple pieces: step flashing, counter-flashing, and an apron. If any one piece corrodes or separates from the mortar, water follows the brick into the attic. This is one of the most common flashing failures in older Dallas homes built before modern flashing standards were common.
• Skylight leaks. The flashing kit around a skylight has rubber gaskets that dry out in Dallas heat. After 10 to 15 years, those gaskets shrink and crack. Homeowners in areas like Lake Highlands and Richardson frequently call us about skylight leaks that turn out to be flashing, not the skylight itself.
• Visible rust or corrosion on metal flashing. If you can see rust flakes on roof metal from the ground, the flashing is nearing the end of its life. Steel flashing rusts from the top down, and what you see is usually worse underneath.
• Loose or pulled-away flashing after windstorms. Dallas sees straight-line winds that lift flashing edges. When flashing loses its seal against shingles, even light rain can push water underneath. After big wind events, we get calls from all over Dallas County about this exact issue.
• Dark streaks or moss near roof penetrations. Persistent moisture at a flashing point supports moss and algae growth. If you see dark patches around a vent or chimney, water is pooling there longer than it should.

If any of these sound like your house, don’t wait. The repair cost goes up the longer water moves through your decking. A $400 flashing fix today prevents a $3,000 decking replacement next year.

Our Flashing Repair Process

Here’s exactly how we approach flashing repair on a Dallas home:

1. You call, and a live person answers. At 2 a.m. or 2 p.m., you’ll talk to a human being, not a voicemail tree. We take your information, ask about the leak or concern, and schedule a visit. Before the technician arrives, we send you their name and photo so you know who’s coming to your door.
2. Technician arrives in a marked uniform, badge out. Every Mercer technician presents a photo ID badge before entering your home. That’s the Threshold Standard, and it’s contractually required of every independently owned Mercer location. No exceptions, every visit.
3. We inspect the full roof, not just the flashing. Flashing failure is often a symptom of a larger condition. We check the shingles, underlayment, decking, and every penetration. We want to fix the actual problem, not just the visible one. You’ll get a clear explanation of what we found, with photographs when helpful.
4. You receive a written price before any work begins. Not a ballpark, not a verbal estimate. A written price. If you approve it, we proceed. If you don’t, you owe us nothing for the inspection. That’s how we’ve operated since 2000.
5. We complete the repair with materials matched to your roof. We use flashing metals and sealants appropriate for your existing system, whether that’s standing-seam metal, architectural shingles from GAF or CertainTeed, or tile. We carry materials for most common Dallas roof types so repairs happen in one visit.
6. You get a written guarantee, and the 365-Day Done Right Promise applies. Every flashing repair includes a written guarantee. If the repair fails within 365 days, the second visit is free. That includes labor and materials, not just parts.

Flashing Repair Pricing in Dallas

Here’s what homeowners in Dallas can expect to pay for common flashing repair scenarios. These ranges reflect what we typically quote on similar homes across Dallas County:

Repair Type	Typical Cost Range	What’s Involved
Vent pipe boot replacement	$150 – $300	Remove old rubber boot, install new boot, seal base
Chimney flashing repair (partial)	$350 – $700	Replace damaged step flashing or counter-flashing, reseal
Chimney flashing replacement (full)	$700 – $1,500	Remove and replace all chimney flashing components
Skylight flashing kit replacement	$400 – $900	New flashing kit, sealing, and flashing integration with shingles
Valley flashing repair	$300 – $800	Address metal valley issues where two roof planes meet
Complete flashing replacement	$1,200 – $3,500	All penetrations, chimneys, walls, and valleys on the roof

What moves the price up or down? The number of penetrations on your roof is the biggest factor. A simple ranch-style roof with one chimney and three vent pipes costs less to flash than a two-story with skylights, dormer walls, and multiple valleys. Roof slope and height also matter. A steep roof requires more safety equipment and takes longer. And if the decking underneath the flashing is rotted, that repair adds cost because the damaged wood has to come out before new flashing goes in.

You’ll never get a final number from us without an inspection. What you will get is a written number before work starts, and that number does not change unless you approve the change first. Estimates are free. Call (432) 302-5605 to schedule yours.

Why Dallas Homeowners Choose Mercer Roofing for Flashing Repair

We don’t think roofer trust should be a leap of faith. So we do specific things that most roofers don’t do:

• You know who’s coming before they arrive. The technician’s name and photo are sent to you before the visit. When they knock, they show a photo ID badge. If someone claiming to be from Mercer can’t show a badge, call us immediately. That’s not how we operate.
• Written price before work begins. Always. In 25 years of roofing Dallas, we’ve never started a job without one.
• 365-Day Done Right Promise. If the flashing repair fails within a year, the return visit is free. It’s written on every job sheet.
• A live person answers 24/7. Storm damage doesn’t wait for business hours. Neither do we.
• Part of the Threshold Group family, founded in 2000. Our location is independently owned and operated, and every technician is held to Threshold Verified standards: background-checked, identity-verified, uniformed, and badged.

When we repair flashing on a Dallas roof, we’re not just stopping a leak. We’re protecting your ceilings, your insulation, your drywall, and the structural wood that holds your house together. We treat your home like it’s more than a job site, because to you, it is.

FAQs – Flashing Repair in Dallas

How much does flashing repair cost in Dallas?

Flashing repair in Dallas typically costs $300 to $800 for most single-point repairs, and $1,200 to $3,500 for full flashing replacement across an entire roof. The final number depends on how many penetrations your roof has, roof height, slope, and whether decking underneath needs replacement. Every estimate is free, and the written price comes before any work begins. Call (432) 302-5605 for a quote specific to your roof.

Can flashing be repaired, or does it need to be replaced?

It depends on the condition of the metal and the sealant around it. Small gaps and lifted edges can often be resealed and re-secured as a repair. Rusted-through metal, cracked flashing, or flashing that has separated from the roof deck usually needs replacement. We’ll tell you which one you need and show you why on the written estimate.

How long does flashing repair take?

Most flashing repairs in Dallas are completed in one to three hours, assuming the decking underneath is sound and the weather cooperates. Full flashing replacement on a large roof can take a full day. Rain can delay roof work, and during Dallas spring storm season, we schedule with weather windows in mind. Call (432) 302-5605 and we’ll give you a realistic timeline for your specific repair.

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

Repairing flashing is almost always cheaper than replacing a roof or even full Roof Repair. Flashing repair typically runs $300 to $800 per area, while a full roof replacement in Dallas starts around $9,000 to $12,000 and goes up from there. If your flashings are failing but your shingles have years of life left, a targeted flashing repair makes more financial sense. We’ll give you an honest read on the condition of the whole roof, not just the flashing, so you can make an informed decision.

Common Flashing Types We Work With

Different roof features need different flashing approaches. Here’s a quick plain-English guide to what we work with on Dallas homes:

Chimney Flashing

Chimney flashing includes step flashing (the L-shaped pieces that weave into the shingles), counter-flashing (the metal embedded into the chimney mortar), and the apron at the base. Over time, the seal between these pieces breaks down, especially at the mortar line. We repair that seal and replace any metal that’s too far gone. If the chimney crown itself is cracked, we’ll tell you, because that’s a separate issue that also causes leaks.

Skylight Flashing

Skylight flashing is a manufactured kit that fits around the skylight frame and integrates with your shingles. The rubber gaskets in these kits deteriorate in Dallas’s summer heat. When the gasket fails, water seeps around the skylight frame. Sometimes we replace just the gasket; sometimes the full kit is the right call. We carry flashing kits that work with most major skylight brands.

Valley Flashing

Valleys are the V-shaped channels where two roof planes meet. Water funnels through them during rain, which makes valley flashing critical. Older Dallas homes sometimes have open valleys with exposed metal; newer roofs often use woven shingles. If the metal is rusted or the valley was poorly sealed, it becomes a fast path for water into your attic.

Vent Pipe Flashing (Pipe Boots)

Plumbing vent pipes stick up through the roof, and they need a rubber boot that seals the pipe to the roof deck. Those boots crack and split with age, especially under Texas sun. This is the cheapest and fastest flashing repair we do, usually $150 to $300, and it stops a surprising number of “mystery leaks.”

Dormer and Sidewall Flashing

Where a dormer wall meets the roof, step flashing plus a kick-out flashing directs water away from the wall. If that kick-out piece is missing or the step flashing isn’t properly woven into the shingle courses, water runs down the wall and behind the siding. We see this a lot on older two-story homes in neighborhoods like M Streets and Junius Heights.

What Happens If You Ignore a Flashing Leak

A small flashing failure doesn’t stay small. Here’s what we repeatedly see in Dallas homes where a flashing leak was left alone for a season or more:

• Decking rot. The plywood or OSB under your shingles soaks up water, swells, and rots. Rotted decking has to be cut out and replaced before new roofing can go on.
• Mold in insulation and drywall. Water that reaches your attic insulation reduces its effectiveness and creates conditions for mold. By the time you see a ceiling stain, mold has often been growing for weeks.
• Structural damage. Repeated water exposure to rafters and ceiling joists weakens the lumber. Repairs at this stage are exponentially more expensive than replacing a vent boot.
• Higher energy bills. Wet insulation doesn’t insulate. Your AC works harder in Dallas summer heat, and your electric bill reflects it.

The cheapest day to fix a flashing leak is the day you first notice it. Call (432) 302-5605 for a free estimate and get it taken care of before the next storm system pushes through Dallas.

Flashing Materials and Dallas Weather

Dallas weather is hard on flashing. Summer temperatures regularly hit 100+ degrees, causing metal to expand. Winter brings the occasional freeze. Hailstorms in spring and fall pound roof surfaces. Over time, this thermal cycling and impact loosens nails, cracks sealant, and separates joints.

We select flashing materials with that climate in mind. Galvanized steel is common for its strength, though it eventually rusts. Aluminum resists corrosion better but is softer and can dent from large hail. Copper flashing is the premium option and can last 50+ years, but the cost is significantly higher. We’ll recommend the right material for your roof type and budget, and we’ll tell you the trade-offs in plain English before you decide.

Where shingles meet flashing, we use manufacturer-recognized practices and materials that work with your existing roof system. Whether your roof is from GAF, CertainTeed, or one of the other major brands, the repair integrates with what’s already up there.

Dallas Neighborhoods We Serve

Mercer Roofing Co Dallas serves all of Dallas and surrounding Dallas County communities. We repair flashing on homes built in the 1920s bungalows of M Streets and Lakewood, the mid-century ranches of Casa View and Lake Highlands, the newer construction of Frisco and McKinney, and everything in between. Older homes tend to need more flashing attention because original flashing is aging out, while newer homes occasionally have construction defects that show up within the first few years. We’ve seen the full range across Dallas.

If you’re not sure whether you need flashing repair, Flat Roof Patch work, or something else entirely, the fastest way to get an answer is to call. We’ll ask a few questions, give you an honest read over the phone when we can, and schedule an inspection if needed. The inspection is free, and you get a written price before any work starts. That’s our promise, and it’s been our promise since 2000.

Written by Grant Whitlock, Owner at Mercer Roofing Co Dallas, serving Dallas.