Chimney Leak Repair — Stopping Snowmelt & Storm Leaks
Water in the firebox or a stain by the chimney? We trace the leak to where it really gets in — crown, flashing, cap or brick — and fix that.
A leaking chimney almost never leaks where the stain shows up. Water comes in at the crown, the flashing, a missing cap or porous brick, then travels along framing or down the flue before it appears on a ceiling or in the firebox. That's why patching the stain doesn't work.
In Northwest Indiana, leaks often show up after snow melts or during wind-driven rain off the lake. We trace the water to where it actually enters — with a water test if needed — photograph it and fix that. The leak assessment is free when you go ahead with the repair.
Warning signs it can't wait
- Water in the firebox after rain or snowmelt
- Ceiling or wall stains next to the chimney
- Peeling paint or bubbling drywall near the fireplace
- A musty smell from the fireplace in wet weather
- Rust on the damper or firebox
- White staining on the exterior brick
- Dripping sounds inside the chimney
- Stains that grow after every storm
Seeing two or more at once? Stop using the fireplace and call — that combination usually means the system is struggling or unsafe to run.
Where Region chimneys usually leak
- Crown cracks sealed
- Flashing resealed or rebuilt at the roofline
- Missing or damaged caps replaced
- Rusted chase covers replaced on factory-built chimneys
- Porous masonry treated with breathable waterproofing
- Failed mortar joints repointed
- Cracked brick replaced
- Water test to confirm the entry point
- Photos of the source and the finished repair
What chimney leak repair costs
Leak assessment + water test: $0 with repair. Crown crack sealing: $250 – $450. Flashing repair: $300 – $600. Cap or chase cover replacement: $250 – $450. Masonry waterproofing (breathable): $300 – $900.
| Repair / service | Typical price |
|---|---|
| Leak assessment + water test | $0 with repair |
| Crown crack sealing | $250 – $450 |
| Flashing repair | $300 – $600 |
| Cap or chase cover replacement | $250 – $450 |
| Masonry waterproofing (breathable) | $300 – $900 |
What you get
Source, Not Symptoms
Patching the stain never works. We find the entry point first, with a water test if needed.
Photos of the Culprit
You see the crack, the gap or the rusted cover that's letting water in.
Breathable Waterproofing
Masonry sealers that let brick dry out — never paint-on coatings that trap moisture.
Quoted Flat
Diagnosis is free; the fix is one written price before we start.
Free leak inspection
We find where the water gets in, photograph it and quote one flat price — free, no obligation.
How it works
Listen to the pattern
When does it leak — rain, snowmelt, wind from one direction? That narrows it down.
Inspect the top
Crown, cap, flashing and masonry are photographed from the roof.
Test if needed
A controlled water test finds a hidden entry point.
Flat quote
You see the photos of the source and get one written price.
Fix the entry point
We repair what's actually letting water in.
Confirm and document
After photos, and a recheck of the problem area.
Chimney Leak Repair questions
Why does my chimney leak when it rains?
Most often it's a cracked crown, failed flashing, a missing cap or porous brick. Near Lake Michigan, wind-driven rain makes all of those worse.
How much does chimney leak repair cost?
Crown crack sealing runs $250 to $450, flashing repair $300 to $600, cap or chase cover replacement $250 to $450, and breathable masonry waterproofing $300 to $900. The leak assessment is free with the repair.
Why does my chimney leak when the snow melts?
Snow piles up against the chimney, melts during the day and refreezes at night, which pushes water into cracks in the crown and gaps in the flashing.
Is chimney leak repair a roofer's job or a chimney company's job?
If the leak is in the flashing, either can fix it; if it's the crown, cap or masonry, it's chimney work. We check all of them so you're not paying for the wrong fix.
Can a leaking chimney cause damage inside?
Yes — rotted framing, damaged drywall, rusted dampers and mold. Leaks are worth fixing before winter.
Do you fix leaking chase covers?
Yes. Rusted chase covers on factory-built chimneys are a common leak source. Replacement runs $250 to $450.
How fast can you come out for a leak?
Usually within the week, and sooner if water is actively coming into the house.
Ready for a safer, cleaner chimney?
Same-week appointments, honest flat pricing, no scare tactics — and same-day emergency service when it can't wait. Licensed and insured.