
Chimney Cleaning & Sweeping
Removing soot and creosote so a flue can vent the way it was designed to.
Learn about Chimney CleaningSt. Louis metro · MO
A chimney in Union works hard every winter and weathers every season in between, so keeping it sound is ongoing rather than one-and-done. Mister Chimney serves Union and nearby St. Louis communities with the full range of chimney and fireplace work, matching the service to what the system actually needs.
Many Union calls come down to a fireplace that smokes, a chimney that leaks, or a system that has not been serviced in a while. In each case the useful first step is the same, an assessment that finds the cause, so the fix addresses the problem instead of the symptom.
Missouri's swing between humid summers and freezing winters is hard on chimneys in Union. Masonry absorbs water through the warmer months, then that water freezes and expands when the cold sets in, and the repeated cycle is what loosens mortar, spalls brick, and cracks crowns. That is why keeping rain out — a sound crown, a good cap, intact joints — matters as much here as the cleaning itself.
We serve Union as part of our St. Louis, MO coverage, which reaches roughly 65 miles out from the main city. There is no storefront in Union; we come to the property, assess the chimney or fireplace on site, and go from there.
Around Union, the common prompts to call include:
A Union service call opens with a practical look at the whole system — venting, firebox, masonry, and the parts that keep water out. From there we explain what we found and lay out the sensible next steps, so decisions about repair or continued use are based on the actual condition, not guesswork.
A well-kept chimney is a quiet part of a safe, comfortable Union home, and most of what keeps one that way is unglamorous: clean venting, sound masonry, a working cap and damper, and water kept out. We focus on those fundamentals and are straightforward about what needs attention now versus what can reasonably wait.
Here are the services most commonly needed by Union homes, each linking to a full explanation. We cover roughly 65 miles around St. Louis — call 314-798-9456 or submit the form on this page to get started.

Removing soot and creosote so a flue can vent the way it was designed to.
Learn about Chimney Cleaning
A structured look at the flue, firebox, and exterior to document the system's condition.
Learn about Chimney Inspection
Diagnosing and correcting the specific problem, from a leak to failing masonry.
Learn about Chimney Repair
Rebuilding and restoring the brick and stone that make up the chimney structure.
Learn about Chimney Masonry
Fitting the flue cover that keeps rain, animals, and embers where they belong.
Learn about Chimney Cap Installation
Diagnosing why a gas fireplace won't light, stay lit, or run cleanly, and correcting it.
Learn about Gas Fireplace RepairIf you are in Union or nearby, call 314-798-9456 to talk through what your chimney or fireplace needs, or send the form and we will follow up.
Questions
Yes. We cover the full range in Union, from sweeping and inspection to masonry, caps, liners, and fireplace and stove work. A single visit often starts with an assessment that guides what comes next.
No. We serve Union from our St. Louis, MO coverage area and come to your property for the work. There is no walk-in location in Union itself.
Nearby
24/7 service
Call and we’ll talk through what your system needs.
Get in touch
Tell us about your chimney or fireplace and the best number to reach you. Full name, phone, and ZIP are required.