Chimney Caps & Crowns in St. Charles, IL

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Chimney Caps & Crowns in St. Charles, IL

Custom chimney caps and rebuilt crowns that keep out rain, animals, and downdraft — the cheapest insurance against expensive water damage.

The cap and crown are your chimney’s roof. The crown is the concrete slab that sheds water off the top; the cap is the metal cover with mesh that keeps rain, animals, and embers out of the flue. When either fails, water and wildlife get in — and the damage adds up fast.

Cap vs. crown — what’s the difference?

The crown is the sloped concrete or mortar slab covering the top of the masonry. The cap is the metal hood that sits over the flue opening itself, usually with spark-arrestor mesh. You need both: the crown protects the bricks, the cap protects the flue.

Signs your cap or crown is failing

  • Rain or a dripping sound inside the fireplace
  • Animals, birds, or nesting debris in the chimney
  • A cracked, crumbling, or missing crown
  • Rust stains running down the exterior masonry
  • Downdrafts blowing smoke or cold air into the room
Small part, big job: a $0 missing cap can let in the water and animals that cause thousands in liner and masonry damage. It is the highest-value chimney upgrade there is.

Caps we install

We fit stainless-steel and copper caps sized to your flue, single- or multi-flue, with heavy mesh to stop birds, squirrels, and embers while still allowing proper draft. Custom sizes are no problem for older Fox Valley chimneys.

Crown repair & rebuild

Hairline crown cracks can be sealed with a flexible crown coating. A crown that is spalling, missing chunks, or lacks an overhang is better recast with a proper drip edge so water is thrown clear of the bricks. We will show you which your chimney needs.

What it costs

A standard cap install is one of our most affordable services; crown work depends on the extent of damage. Both are quoted as a flat up-front price — see the pricing page.

Frequently asked questions

What does a chimney cap do?

A cap covers the flue opening to keep out rain, snow, animals, and leaves, and its mesh acts as a spark arrestor to stop embers from landing on your roof. It also helps prevent downdrafts.

What is a chimney crown?

The crown is the sloped concrete slab at the very top of the masonry that sheds water away from the bricks. It is different from the cap and both are needed to keep water out.

How much does a chimney cap cost?

A standard stainless cap installation is one of our most affordable services. Custom or multi-flue caps cost more. We give you a flat, up-front price before installing.

There is an animal in my chimney — can you help?

Yes. Once the flue is clear we install a capped, mesh cover so birds and squirrels cannot get back in. A good cap is the permanent fix for chimney wildlife.

Can a cracked crown be repaired, or does it need replacing?

Hairline cracks can be sealed with a flexible crown coating. A crown that is crumbling or missing an overhang should be recast with a proper drip edge.

Why is water getting into my fireplace?

A missing or rusted cap and a cracked crown are the two most common causes. We inspect the top of the chimney and recommend the fix that actually stops the water.

Do chimney caps stop downdrafts?

A proper cap reduces many downdrafts. Persistent downdrafts can also point to flue sizing or height issues, which we can assess during an inspection.

What material is best for a chimney cap?

Stainless steel is the durable standard and resists rust; copper is a premium option that ages attractively. We size and install both to fit your flue exactly.

Cap blew off in a storm?

An open flue lets in water and animals fast. Call us and we will get a new cap on quickly.

Call (630) 451-4179

Cap it and keep the weather out

Protect the most expensive system on your roof for one of the smallest prices in chimney care.

(630) 451-4179

Published September 2, 2026 · By Jack Fox, CEO & Lead Chimney Expert — Fox Chimney Service · About the author