
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
Affton homeowners rely on their fireplaces and chimneys through the coldest months, and a system that vents cleanly is one you can use without second-guessing it. Mister Chimney provides chimney and fireplace service across Affton and the surrounding St. Louis area, from routine cleaning and inspection to masonry, caps, liners, and fireplace repair.
Older and newer Affton homes bring different chimneys: masonry stacks with clay or steel liners, and factory-built systems inside sided chases. Each is serviced differently, which is why we identify what a property actually has before recommending work rather than applying a single approach.
Missouri's swing between humid summers and freezing winters is hard on chimneys in Affton. 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 Affton as part of our St. Louis, MO coverage, which reaches roughly 65 miles out from the main city. There is no storefront in Affton; we come to the property, assess the chimney or fireplace on site, and go from there.
For homes in Affton, these are good reasons to schedule service rather than wait:
A Affton 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.
Whether a Affton home has a century-old masonry chimney or a newer factory-built system in a sided chase, the two are serviced differently, which is why we identify what a property actually has before recommending anything. Older brick stacks bring masonry and mortar work; prefab chases bring cap and chase-cover concerns. Either way, the goal is a system that vents cleanly and keeps water out.
The services Affton property owners request most often are listed here, each with its own detailed page. If you're inside about 65 miles of St. Louis, call 314-798-9456 or use the form and we'll match the visit to your system.

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 Affton 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. A home purchase is a classic reason for a thorough inspection, typically a Level 2 with an interior flue scan, so you know the true condition before closing on a Affton property.
No. We serve Affton from our St. Louis, MO coverage area and come to your property for the work. There is no walk-in location in Affton itself.
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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.