A chimney chase is the framed enclosure around many factory-built chimney systems, and the chase cover is the metal top that helps shed water away from that enclosure. Corrosion, poor fit, failed storm collars, or inadequate drainage can allow moisture into the chase. ATL Chimney measures and evaluates the existing cover before recommending repair or replacement.
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A chimney cap protects a flue opening. A chase cover spans the top of a framed chimney chase and is commonly found with factory-built systems. Rust stains, water entry, or a damaged metal top may point to the chase cover, storm collar, or another transition that should be inspected before replacement.
See chimney cap installationMeasure the chase for a custom-fit cover
Fabricate in corrosion-resistant stainless steel or copper when appropriate
Remove the old, rusted cover and inspect the framing beneath
Install the new cover with a proper drip edge and storm collar
Seal vulnerable transitions to help protect the chase from water entry
A useful chase-cover estimate explains what is being replaced, how the new cover fits the system, and whether water-damaged materials need separate work.
Ask whether the scope includes only the metal cover or also a cap, storm collar, siding, trim, or damaged framing. A new cover and repairs to materials below it are different parts of the job. Any additional damage found after removal should be documented and discussed.
The chase dimensions, chimney penetrations, drainage details, and manufacturer-required clearances affect the replacement. Ask how compatibility with the existing system will be verified before fabrication. Share existing photos from a safe location; there is no need to climb onto the roof or measure the cover yourself.
Material choice, cover size, roof access, fabrication, and surrounding repairs affect the quote. Confirm the proposed material and which installation details are included. Ask about fabrication and weather-related scheduling rather than assuming the replacement can be completed at the first visit.
See chimney chase cover installation conditions and completed work from ATL Chimney projects.
Custom metal chase cover fitted over a residential chimney chase.
Custom chase cover protecting a multi-flue chimney system.
Project notes and before-and-after photos from our field work.
At an Alpharetta home, we replaced a chase cover that was leaking. The before photo shows the rusted cover on the blue-sided chimney chase; the after photo shows the new cover fitted around the round chimney termination.
These photos document the cover replacement. If you have a similar concern, note where water appears and whether it follows rain when requesting a leak evaluation.
At a Marietta home, we replaced the chimney chase, siding and trim. The before photo shows the old rusted top and weathered exterior. The after photo shows the completed chase with new siding, trim and a white cover assembly.
This project included the chase exterior as well as the top. When asking about similar work, include photos of the siding and trim so the full scope can be discussed.
A Marietta homeowner reported water entering the home, a rusted chase cover and rotted trim. Our roof evaluation identified the chase cover as the source of the water entry. We replaced it with a better-fitting cover and repaired the resulting water damage, including the affected trim.
The repair addressed both the entry point and the damage it had caused. When reviewing a similar scope, ask whether damaged trim and other affected materials are included alongside the cover replacement.
Chase covers are common on factory-built chimneys across Cobb, North Fulton, and suburban Atlanta. Galvanized covers can corrode as coatings age and weather exposure accumulates, while properly fabricated stainless steel offers greater corrosion resistance for replacement applications. If you are arranging chase-cover service in Johns Creek, the local guide explains which leak details and photos to share before a visit.
Call ATL Chimney or send an online service request. We will document relevant findings, explain the recommended scope, and provide pricing before approved repair work begins.