The Modern Louvered Chimney Cap is the most architecturally detailed cap I build. A full-perimeter louvered body with integrated side screens, a double-stepped fascia above it, curved standing seam panels tapering upward to a crown, and a solid removable lid on top. Side mount or top mount. Built to your exact chimney dimensions in copper, Kynar-painted aluminum, or Galvalume. Stainless steel is not available in this style.
The profile reads like a cupola — louvered sides, curved standing seam roof, strong crown details above and below the curve. If you searched "cupola chimney cap," "blade chimney cap," "finned chimney cap," or "modern louvered chimney cap" and landed here, you're in the right place.
What It Does
The louvered body runs the full perimeter of the cap — horizontal fins with integrated side screens that block rain, debris, and animals while keeping airflow open. Above the louvers, a double-stepped fascia adds strong horizontal shadow lines and architectural definition before the profile transitions into curved panel sides. A crown detail wraps the cap at the roofline. The solid removable lid lifts off when you need access to the flue for inspection or cleaning.
Modern Louvered Construction
The louvered section is the base of the cap — 8 horizontal fins per side, brake-formed from the same sheet metal as the cap body. Above the louvers, a double-stepped fascia transitions into curved standing seam panels that taper inward as they rise. A crown wraps the cap at the top of the curved section. The solid lid sits above the crown and is removable for flue access.
Corners on the curved panel section are fully mitered. The curved panels are lock-seamed, not screwed or caulked. Every component — fins, fascia, panels, crown, lid — is the same material and gauge throughout, so copper patinas uniformly and Kynar color matches across every surface.
The premium top-mount flange (CL-3.4a) is an 8¾" rip with a 2" ledge, mitered corners, set in elastomeric sealant directly on the chimney crown. Side mount uses a vertical drip edge skirt wrapping the crown exterior — no masonry penetration.
Material Options
16oz Copper — warm penny tone new, weathering through rich browns and eventually to the classic verdigris seen on historic buildings. No paint, no coating, no maintenance. The patina that develops is protection — not deterioration. Riveted construction with copper rivets and solid brass mandrels.
How long do copper chimney caps last? → | How copper ages — a 16-year look at a dome I fabricated →
Kynar-Coated Aluminum — factory-applied PVDF coating, the same system used on commercial standing-seam roofing. Holds color without fading, chalking, or peeling for 25–50 years. Available in a wide range of architectural colors including black, charcoal, dark bronze, and more. Riveted with stainless steel color-match rivets.
Copper vs. aluminum chimney caps — which is right for your home? →
304 Stainless Steel — 2B 304 24-gauge. Doesn't corrode, doesn't need coating. The performance choice when long-term durability matters more than aesthetics — 50–100+ year lifespan with zero maintenance. Riveted with stainless steel rivets.
Galvalume vs. aluminum vs. stainless steel — how they compare →
Galvalume — zinc-aluminum alloy coating over steel. Strong corrosion resistance at an accessible price point. Mill-finish appearance. Good for straightforward applications where color isn't the priority.
Specs
- Cap style: Modern Louvered (MV) — louvered base, curved panel sides, crown, removable lid
- Fins: 8 per side, full perimeter
- Drip edge height: 2" – 5" (3¾" standard)
- Flange: Premium top-mount CL-3.4a, 8¾" rip, 2" ledge, mitered — or side mount drip edge
- Lid: Solid removable lid, always included
- Screen: Stainless steel mesh, integrated behind fins
- Size range: 24" × 24" minimum · 60" × 120" maximum
- Materials: Copper · Kynar Aluminum · Galvalume (no stainless)
- Fasteners: Stainless steel rivets throughout (copper rivets + brass mandrels on copper caps)
- Made in: Berlin, NJ
Installation
Modern Louvered caps set on top of the chimney crown — no flue liner penetration required. Top mount: the flange sits flush on the crown, set in elastomeric sealant and fastened to the crown surface. Side mount: the drip edge skirt wraps the exterior of the crown. Measure the outside of your chimney at the crown, not the flue tile. Width is always the shortest dimension. Add at least ¼" to each measurement so the cap slides on without binding.
Due to the height and weight of larger Modern Louvered caps, a second set of hands is recommended for positioning on the chimney. No special tools required beyond a caulk gun and elastomeric sealant.
Questions about measuring or fitting? Call or text (609) 352-9840.
Wood-Framed Chase
Modern Louvered caps work on wood-framed chases as well as masonry chimneys. The flange or drip edge sets on the chase top — use a closed-cell backer rod and elastomeric sealant at the perimeter joint to keep the connection watertight. If your chase top is rotted or needs replacement before the cap goes on, address that first.
Not sure if the Modern Louvered style is right for your chimney? See chimney cap guides or call (609) 352-9840.
Shipping
Custom Modern Louvered caps ship LTL freight in a custom-built OSB crate. Freight cost depends on cap size and delivery ZIP — I quote freight separately after you submit your dimensions. I use ABF Freight for most shipments.
Typical lead time is 2–3 weeks from order confirmation. Call or text (609) 352-9840 to discuss timeline before ordering if you have a hard deadline.
About Archaic Metal
I'm Sean. I've been working copper and sheet metal since 1994, trained under master coppersmith Stephen L. Foss at Ye Olde Tin Shop in Haddonfield, NJ. Archaic Metal has been my operation since 2011 — one person, one shop in Berlin, NJ. Every cap I sell is one I fabricated. No outsourcing, no overseas production, no batch runs sitting on a shelf. Your cap is built to your dimensions after you order it.
More on how I build caps: How Chimney Caps Are Made · Copper vs. Aluminum
Built to your chimney. Every Modern Louvered cap is custom fabricated in Berlin, NJ. Enter your dimensions above to see your price — or call / text (609) 352-9840 for a freight quote to your door.