Also called a chimney topper, chimney rain cap, chimney cover, chimney shroud, or chimney surround — whatever you call it, this one is built to last.
Top Mount Cap Measuring — Add 6" to the length and width of where you want the screen to sit on the chimney top. Top Mount vs Side Mount Guide →
Available in copper, stainless steel chimney cap, Kynar aluminum, and Galvalume. Stainless steel chimney caps and stainless chimney covers are built to the same spec and dimensions as every other material — contact me to order.
The Multi-Flue Cap
A multi-flue chimney cap covers the entire chimney crown in one piece — one cap over all your flue tiles, regardless of how many you have or how they're arranged. If your chimney has two or more flue tiles, this is the correct cap. I fabricate every multi-flue cap to your exact chimney dimensions from 18×18 up to 60×120, in my shop in Berlin, NJ.
Every cap is hand-fabricated to your exact dimensions — the same way it's been done in my shop since 1994.
What It Actually Does
A properly fitted cap does four things a hardware store cover doesn't: it protects the entire chimney crown (not just individual flue tile openings), it blocks animal entry with a heavy spark screen, it reduces wind-driven downdraft, and it contains embers from wood-burning fireplaces. The full-perimeter flange sits on the crown — crown repair runs $500–$3,000, and a cap that covers it correctly prevents all of it.
What is a chimney crown — and why yours may already be cracking →
Built for Multiple Flues
The multi-flue cap uses a taller screen panel than a standard single-flue cap — 10" is the default, with options up to 24" — to clear multiple flue tiles that may sit at different heights above the crown. One cap, one installation, full coverage. The cross-brake lid sits on top and removes with a screwdriver for chimney sweeping or flue access.
Measure the full outside of your chimney at the crown — not individual flue tiles — and enter that single width and length in the calculator above. That's your cap size.
Cross-Brake Removable Lid
Every multi-flue cap includes a cross-brake structural lid standard — a single-piece lid with a built-in cross-brace for rigidity across the full span. On a multi-flue cap, the lid can be substantial — some span 4, 5, even 8 feet across — and the cross-brake keeps it flat and rigid under its own weight and under snow load. Secured with a ¼-20 stove bolt threading into a stainless steel rivnut insert — brass bolt on copper caps, stainless steel on all other materials. Removes with a screwdriver for chimney sweeping or flue access. Standard on all materials and all sizes.
Specs
- Material: 16oz copper · Kynar aluminum (.032"-.040") · 304 stainless steel (24 gauge) · Galvalume (24 gauge)
- Screen: Expanded stainless steel (copper caps) or aluminum mesh (other materials)
- Screen location: Short ends only — 2 sides
- Screen height: 75% of width dimension
- Minimum size: 20" × 24"
- Maximum priced online: 36" wide (wider caps quoted by phone)
- Mounting: Top-mount flange or side-mount — your choice
- Drip edge / flange depth: 2" to 5" — 3" standard
- Lead time: Approximately 2–3 weeks
- Ships: Nationwide via insured LTL freight in custom wood crate
Have a Wood-Framed Chase?
If your chimney sits on a prefab wood-framed chase rather than masonry, you may need a chase cover in addition to this cap. The cap mounts on top of the chase cover — it doesn't have a flat bottom with pre-cut holes for your flue pipe(s). If there's currently no metal cover on your chase top, you need both.
Masonry chimney or wood-framed chase — how to tell the difference → | Browse custom chimney chase covers →
About Archaic Metal
I've been fabricating custom architectural sheet metal in South Jersey since 1994 — copper, Kynar aluminum, Galvalume, and stainless steel, all by hand. Every cap that leaves this shop I built myself. If you have questions about your chimney or which cap is right for it, message me or call. I personally review every order before fabrication starts — you won't be left guessing.
Phone: (609) 352-9840
Not sure what size you need or how many flues to cover?
Send me your measurements and I'll confirm everything before fabrication starts. No obligation.
Request a quote or call/text me directly: (609) 352-9840
What Customers Are Saying
"Fantastic fit and finish, excellent communication from start to finish. A trusted craftsman." — Charlie
"The chimney cap is absolutely gorgeous. The craftsmanship is incredible. I am beyond thrilled." — Carol
"Amazing quality. The custom chimney cap exceeded my expectations!!" — Johnny