Roofer or Chimney Company – Who Should Fix Your Chimney Flashing?

Split decisions cost money. Most chimney flashing leaks I see in Kansas City run somewhere between $650 and $2,200 to actually fix-and the bills that land near the top of that range usually got there because the first contractor who showed up guessed wrong about where the water was coming from. I’m going to walk you through how to read your own leak crime scene so you know whether to call a roofer, a chimney company, or both-before the invoices start stacking up on your kitchen counter.

What Chimney Flashing Leaks Really Cost When You Call the Wrong Pro First

Here’s my honest opinion that annoys both roofers and chimney guys: neither trade is automatically right or wrong when a leak shows up at the chimney. The expensive mess happens when whoever shows up first treats every problem like it fits inside their comfort zone instead of following the actual water path. A roofer who caulks over bad counterflashing and a chimney tech who ignores blown-out shingles are making the same mistake-just from opposite sides of the ladder.

KC Chimney Flashing Leak Scenarios & Who Should Lead the Repair

Typical cost ranges based on Kansas City repairs – 2026

Scenario Who You Should Call First Typical Total Range (KC 2026)
Shingles worn out, flashing intact, leak only during general roof leaks Roofer (full roof or partial repair) $650-$1,200 (flashing tweaks included in roofing work)
New roof, old chimney, water tracking right at brick/flashing joint Chimney company to diagnose, then coordinate with roofer $900-$1,800 (shared scope)
Rusted or improperly stepped flashing, good shingles, isolated leak at chimney Either, but chimney company with roofing experience is safest start $750-$1,600
Missing cricket behind wide chimney, repeated leaks on uphill side Chimney company to spec cricket, roofer or chimney crew to build $1,500-$2,500+
Interior stains plus masonry cracks or crown damage near chimney top Chimney company first; roofer looped in only if roof issues found too $1,000-$2,200+

What Roofers Handle Well vs. What Chimney Companies Handle Best

On more roofs than I can count, the first thing I do is kneel on the uphill side of the chimney and lift a single shingle. That one move usually tells me 80% of what I need to know-whether this is a shingle and decking problem, a flashing geometry problem, or a brick-and-mortar-and-crown problem that a roofer was never really trained to solve. I see this constantly in Overland Park and Waldo, where you get a lot of homes with new shingles sitting on top of original 1970s flashing, or the reverse: beautiful old brick chimneys where a recent re-roof contractor just buried the counterflashing under a bead of caulk and hoped for the best.

One August afternoon, about 4:30 p.m., I was on a south-facing roof in Overland Park that felt like a frying pan. The homeowner had just paid for a brand-new roof, but every hard rain was sending water down the back of the fireplace. The roofer swore the flashing was “perfectly good.” When I peeled back one shingle, I found step flashing jammed straight into deteriorated mortar joints-and not a single piece of counterflashing cut into the brick anywhere along the chimney. I took a short video, walked the roofer through it, and he stopped blaming “the old chimney” pretty fast. That kind of installation looks fine from the ground. It’s not fine. And it’s specifically a chimney-aware diagnosis problem, not a shingle problem.

Most people assume “roof leak = roofer.” And honestly, that logic works great when water is entering two valleys over. But when the leak hugs the chimney-when it’s specifically triggered by heavy rain at that one corner of your house-you need to understand who actually owns which piece of that system. Shingles belong to the roofer. Metal step flashing integration belongs to the roofer. Counterflashing cut into the brick, crown condition, cap seal, and flue-area water entry? That’s chimney territory. Both trades can be guilty, and both can be needed at once.

🔨 Roofer Typically Handles…
  • Shingle replacement and underlayment around the chimney.
  • Installing and integrating step flashing into new roofing courses.
  • General roof leak tracing away from the chimney structure.
  • Adding or replacing roof vents and addressing attic moisture.
  • Warranty work tied to a recent re-roof.
🧱 Chimney Company Typically Handles…
  • Diagnosing leaks tied to brick, crown, flue, and smoke chamber.
  • Cutting and installing counterflashing into mortar joints or siding.
  • Complex leak tracing where water could enter at cap, crown, bricks, or flashing seam.
  • Specifying and inspecting crickets, back pans, and flue-to-chase ties.
  • Code and clearance checks for fireplace, insert, and flue affected by leaks.

How to Read the “Leak Crime Scene” Before You Call Anyone

Before I even bring a ladder off the truck, I usually ask people one question: Where did you see the first sign of water? Not where the puddle ended up-where you first noticed something was wrong. Is it a ceiling stain at the beam right next to the chimney chase? A dark streak down the inside face of the firebox? Does it only happen during a hard sideways rain from the southwest? That one piece of pre-call information can point you straight to the right trade before anyone charges you a diagnostic fee. If you’re reading this before calling anyone, grab your phone, take a photo of every water stain near that chimney, and write down what the weather was like each time it happened. That note is your evidence. Don’t lose it.

One cold, windy November morning in North Kansas City, I got an emergency call from a landlord who was fed up. His roofer said it was the chimney. His chimney guy said it was the roof. He was stuck in the middle, and both guys had been out twice. When I got up there, I found something neither of them apparently looked for: the original builder had installed proper chimney counterflashing-good work, actually-but a later roofer had overlapped it with new shingles and nailed right through the vertical legs, then globbed mastic over the nail holes like nobody would notice. I had to carefully separate their “patch” from the original flashing system and rebuild both the step and counterflashing so neither trade was sabotaging the other’s work. The landlord paid for three service calls to fix what one careful inspection could have caught the first time. That’s the real crime scene: not the leak, but the layers of guesswork stacked on top of it.

Who to Call First – KC Chimney Leak Decision Guide

Start here: “Where is the very first sign of water?”

Stain is several feet from the chimney, along a general roof slope
→ Call a roofer first. This is likely a broader roofing issue, not chimney-specific.

Stain is tight to the chimney chase or directly above the fireplace
→ Next question: “Do you see cracked crown, missing cap, or degraded brick at the top?”

• Yes → Call a chimney company first. Masonry issues are driving this.

• No / can’t tell from ground → Next question: “Have you had a new roof installed in the last 5-10 years?”

• Yes, recent roof → Start with your roofer, then bring in a chimney company if the leak persists.

• No, older roof & older chimney → Start with a chimney company that understands flashing, and be ready to loop in your roofer if deck damage shows up.

When You Absolutely Need Both a Roofer and a Chimney Specialist

If you hire a roofer to fix a chimney problem or a chimney tech to fix a roof problem, don’t be surprised when you pay twice to stop the same leak.

Blunt truth time: if your ceiling is already stained, you’re past the “wait and see” phase. I’ve seen this exact situation play out after a Saturday night storm-hail, sideways rain, the whole show. A past client texted me video of water dripping from the mantel at 11:52 p.m. Two years earlier I’d flagged that their flashing was barely holding on, but they chose to wait for a future roof replacement. After that storm, the roofer came out first, replaced the damaged shingles, and then called me back to integrate new step flashing with proper counterflashing and a new saddle. Because we planned the hand-off in advance and both understood where each scope started and stopped, the whole job got done without either of us undoing the other’s work. That coordination is the difference between fixing it once and paying for the same storm twice. Once interior finishes, insulation, or sheathing are involved, you almost always need both trades-even if only one of them is technically “responsible” on paper.

KC Leak Situations Where Roofer + Chimney Company Coordination Saves Money
Leak Situation Why Both Trades Matter Efficient Sequence
Repeated uphill-side leak behind a wide chimney Cricket framing and shingle work is roofing; cricket sizing and integration with the flue and chase is chimney-specific. Chimney company specs cricket and flashing → Roofer builds cricket and ties in roof.
New roof, old leaky chimney with failing counterflashing Roofer controls shingles; chimney tech must cut and seat counterflashing correctly into mortar. Chimney company removes old counterflashing, installs new → Roofer seals and integrates shingle courses.
Interior ceiling damage plus crown cracks and flashing gaps Top-side water entry at the crown and mid-level entry at the flashing seam are both contributing. Chimney company rebuilds crown and flashing → Roofer replaces damaged deck and shingles.
Prefab chase with rotten siding and rusted pan flashing Siding and trim are carpentry and roofing; flue, chase pan, and cap are chimney territory. Chimney company replaces chase pan and cap → Roofer/siding contractor repairs chase walls and ties into roof.

Questions to Ask Before You Hire Anyone to Touch Your Flashing

I still remember a Tuesday in March when a homeowner asked me if his roofer could just “smear more tar on it.” And I get it-it sounds so simple. But here’s the thing: mastic and caulk are the last step in a repair, not the repair itself. The way I approach every flashing call is like reconstructing a crime. Who opened the path? Was it the crown cracking at the top and letting water migrate down the brick face? Was it a mortar joint that gave out and let water track into the step flashing leg? Was it a nail through the counterflashing that nobody noticed? The pro you hire should be able to walk you through their theory-with photos, with a plan-before they ever open a tube of anything. If their diagnosis is “it’s leaking, I’ll seal it,” that’s not a diagnosis. That’s a guess with a caulk gun.

Once you understand who does what and what questions to ask, you’re a lot less likely to fund the same leak twice. Think of hiring a contractor here like interviewing a detective, not ordering a replacement part. The right person doesn’t just show up and fix; they explain how the suspect got in and why their fix closes the door for good.

5 Questions That Separate the Right Pro from the Wrong One
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“Will you lift shingles and show me photos of what you find?” – If they only look from the ground, they’re guessing, not investigating.

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“Who owns the step flashing and who owns the counterflashing?” – A good roofer or chimney tech should be able to answer this in one breath without hesitating.

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“If you find rotten deck or brick issues, can you coordinate with the other trade?” – You want a plan for hand-offs, not finger-pointing between two guys who won’t return each other’s calls.

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“What does your repair include besides sealant?” – Sealant is the tail end of the job, not the job itself. If sealant is the whole plan, keep looking.

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“Can you show me one similar KC job and explain why it leaked?” – Their ability to tell that story clearly tells you exactly how they’ll handle yours.

Common Questions: Roofer vs. Chimney Company
My roofer says the chimney is the problem, and the chimney guy says it’s the roof. Who do I believe?

Believe whoever can show you clear photos and a simple explanation of where the water enters versus where it shows up. Sometimes both are right: one trade fixed their part, but the other section is still open. That’s exactly why good documentation and photos matter from the first visit.

Can a chimney company replace flashing without involving my roofer?

Often, yes-especially for localized flashing repairs. But if we discover widespread shingle or deck damage underneath, we’ll loop your roofer in rather than patch over a bigger roofing problem and send you back to square one six months later.

Should I wait until I replace the whole roof to fix chimney flashing?

If the leak is active, no. Waiting usually means more rot, compromised insulation, and higher drywall and framing costs down the road. A good chimney company can often do an interim repair that either stands alone or integrates cleanly with a future re-roof.

Is it cheaper to have my roofer “just do everything”?

Sometimes in the short term-but when chimney-specific details like counterflashing, crickets, and crown ties get missed, you can end up paying a chimney company later to undo and redo that work correctly. Starting with the right scope saves you real money over a few storm seasons.

Water always finds the easiest path-and so do bad repairs, which is why who you call first matters a lot more than shaving $100 off the initial quote. If you’ve got a leak near the chimney and you’re not sure whether it’s a roofing call or a chimney call, reach out to ChimneyKS. We’ll review your photos, trace the actual leak path, and coordinate with your roofer if the scope crosses both systems-so your Kansas City home’s flashing gets fixed once, correctly, and you’re not having this same conversation after the next big storm.