Caps & covers
Chase Cover Replacement
A chase cover is the metal top that seals the chase, the boxed-in structure around a factory-built (prefab) chimney. Unlike a masonry crown, it is sheet metal, and when it is made of the wrong material or simply ages, it rusts, pools water, and leaks. Replacing a failed chase cover is one of the most common prefab-chimney repairs.
Why chase covers fail
Many chase covers were originally galvanized steel, which rusts. Once rust starts, the cover develops pinholes, pools water rather than draining it, and streaks rust down the chase siding, a telltale sign visible from the ground. A flat or poorly sloped cover holds water, which accelerates the whole process.
Because the chase is usually a wood-framed, sided structure, a leaking cover puts water straight into framing that was never meant to get wet.
What a replacement involves
A proper replacement is fabricated to fit the chase, made from a durable material such as stainless steel, and formed with a slope and a collar so water drains off and away from the flue rather than sitting on top. We measure the chase, confirm the flue arrangement, and fit a cover built to shed water and last.
Getting the fit and slope right is what separates a lasting repair from one that rusts and leaks again in a few years.
Chase cover versus crown versus cap
These terms get mixed up. A crown is masonry on a brick chimney; a chase cover is metal on a prefab chase; a cap covers the flue opening on either type. Prefab chimneys typically need a sound chase cover and a proper cap working together. We identify what your chimney actually has and what it needs.
Signs a chase cover is failing
- Rust stains streaking down the chase siding
- Standing water pooling on top of the cover
- Visible corrosion or pinholes
- A leak inside near the fireplace
- A flat cover that doesn't drain
- A cover that is loose or lifting
A chase cover replacement includes
- Measuring the chase and confirming the flue layout
- Fabricating a cover to fit
- Using a durable material such as stainless steel
- Forming a slope so water drains off
- Adding a proper collar around the flue
- Pairing it with a suitable cap
Serving St. Louis & Kansas City
We provide chase cover replacement across both of our home regions — the St. Louis metro, including the Metro East communities in Illinois, and the Kansas City metro on both the Missouri and Kansas sides — generally within about 65 miles of each city. Wherever you are, the approach is the same: we look at the actual system on site, explain what we find in plain terms, and lay out the options before any work begins. We use cautious, honest language about what we can and can't determine, and we don't quote a price or promise a fix for a problem we haven't assessed in person. Each metro has its own direct phone number, so you always reach the right place, and we're available around the clock to take your call and get you on the schedule.
The right component depends on your flue arrangement and chimney type, the material best suited to your exposure, and whether related parts such as the crown, chase cover, or screen also need attention.
Keeping ahead of it
This is one of the higher-value, lower-cost parts of a chimney to keep in good order. A properly fitted cap or cover prevents the water intrusion, animal entry, and debris that cause bigger, more expensive problems, so it's worth checking its condition as part of a yearly look at the system.
Questions
Chase Cover Replacement FAQs
How do I know my chase cover is failing?
Rust stains running down the chase siding, standing water on top, visible corrosion, or a leak inside near the fireplace are the usual signs it is time to replace.
What material should a chase cover be?
Stainless steel resists rust far better than galvanized and is a common durable choice. The right material depends on exposure; we recommend based on your chase.
Is a chase cover the same as a chimney crown?
No. A chase cover is metal on a factory-built chase; a crown is a masonry slab on a brick chimney. They solve the same problem for different chimney types.
Do you service both St. Louis and Kansas City?
Yes. This is one of the services we provide across both the St. Louis and Kansas City metro areas, each with its own direct phone number. Call the number for your area and we'll take it from there.
St. Louis metro
Chase Cover Replacement near St. Louis
Available across the St. Louis service area, including:
Kansas City metro
Chase Cover Replacement near Kansas City
Available across the Kansas City service area, including:
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Need chase cover replacement? Let’s talk.
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Get in touch
Request chase cover replacement
Tell us about your chimney or fireplace and the best number to reach you. Full name, phone, and ZIP are required.
- Available 24/7 to take your call and schedule a visit.
- We assess the system on site and explain options before any work.
- Serving the St. Louis and Kansas City metro areas.