Many homes built since the 1980s have factory-built (prefab) fireplaces with a metal chimney inside a framed "chase" covered in siding. The metal chase cover on top often rusts, collects water and leaks into the chase. A stainless steel chase cover with a sloped top and drip edge is the lasting fix.
How to tell if you have a prefab fireplace
- Metal firebox with refractory panels instead of brick
- Chimney outside covered with siding rather than brick
- A round metal cap with a decorative shroud on top
Why chase covers fail
Original covers are often thin galvanized steel with a flat top. Water pools, rust holes form, and water runs down inside the chase — damaging framing and the fireplace.
The fix
A custom stainless steel chase cover with a sloped or cross-break top, a drip edge and a new storm collar. Prefab fireplaces also need the right listed parts — they should only be repaired with components approved for that unit.
More questions
Can a prefab fireplace be converted to burn wood?
Only if it is a wood-burning unit listed for that use. Many prefab units have specific limits — check the model listing or have it inspected.
Need a local professional?
Chimney Champs has been a local chimney company for 13 years. We provide chimney caps & dampers in your area. Call (856) 300-9215 for a free estimate.
Sources & further reading
- NFPA 211 — Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances (National Fire Protection Association)
- Chimney Safety Institute of America (CSIA)
Keep reading
- 9 Signs Your Chimney Needs Repair
- Why Is My Chimney Leaking? 6 Causes and How to Fix Them
- Chimney Flashing Explained: Why It Leaks and How It's Fixed
- Chimney Crown vs. Chimney Cap: What's the Difference?
- Flaking Brick and White Stains on Your Chimney: What They Mean
- How Often Should You Clean Your Chimney?