A Level company - serving Crystal Lake, IL

Olympia Chimney Chimney Cap Installation Nationwide

Every visit starts with

Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed

Worth knowing

Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.

Styles & brands we work with

Sweep & inspection
Sweep & inspection
Caps & crowns
Caps & crowns
Flue relining
Flue relining
Masonry repair
Masonry repair
Gas fireplace service
Gas fireplace service

Before & after – our own jobs

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
Before - Complete UpgradeBeforeAfter - Complete UpgradeAfter
Complete Upgrade

Olympia Chimney Chimney Cap Installation: The Crystal Lake Owner’s Guide

We stock and install Olympia Chimney-compatible chimney caps across Crystal Lake, with most replacements running $340-$620 installed depending on flue size and whether your crown needs resealing. Single-flue galvanized caps on standard Olympia Chimney round liners are typically done in under two hours; multi-flue stainless models or caps requiring crown repair take longer. We carry common Olympia Chimney cap sizes on our trucks, and most Crystal Lake jobs are scheduled within a week.

Call (815) 923-3185

Most owners figure out their cap is shot during a routine sweep or after spotting rust streaks down the brick. Sometimes it’s a neighbor pointing out the thing’s sitting crooked after a March windstorm off the lake. The cap’s job is simple: keep water, animals, and debris out of your flue. When it fails, water hits the smoke shelf and liner directly, and that damage gets expensive fast.

Which Olympia Chimney Models This Applies To

Olympia Chimney caps aren’t one-size-fits-all, and the company has shifted its product lines enough that the cap that fit a 2015 install may not match current stock. We see this most with older Olympia Chimney round flexible liners in the 6″ and 8″ diameters, where the original termination cap was a snap-lock galvanized design that’s since been superseded by their screw-band stainless series.

To identify what you’ve got: look for the Olympia Chimney label on the liner itself, usually visible at the top of the flue or inside the firebox. The cap will have either a stamped size (6″, 7″, 8″) or a part number starting with OLY-. If the label’s rusted off, we measure the flue opening and liner OD on-site. For single-flue masonry chimneys with an Olympia Chimney liner, we typically spec a Gelco or Famco stainless cap with an Olympia Chimney-compatible base ring; for unlined masonry flues, we source direct from Olympia Chimney’s masonry cap line. We’re an independent service provider, not affiliated with Olympia Chimney, and we source through Haven’s buying network to keep pricing honest on both OEM and quality aftermarket equivalents.

Signs Your Olympia Chimney Chimney Cap Installation Is Failing

A professional chimney sweep cleaning a brick chimney from the roof.
Signs Your Olympia Chimney Chimney Cap Installation Is Failing
  • Rust stains running down the exterior brick. The cap’s galvanized coating has failed, usually at the seams or the mesh screen welds. In Crystal Lake, we see this accelerate when caps sit below the tree line; leaf tannins and lake-effect humidity strip the finish faster than drier inland climates.
  • Mesh screen clogged or collapsed. The spark arrestor mesh is designed to stop embers while venting smoke. When it plugs with creosote or gets dented by falling branches, draft drops and smoke can back up into the house. We check this with a mirror from below during every Level 2 inspection.
  • Cap sitting askew or detached. The mounting brackets have corroded, or the original installer used generic screws instead of Olympia Chimney’s stainless hardware. A loose cap in a Crystal Lake winter wind becomes a projectile; we’ve found them in yards as far as thirty feet from the chimney.
  • Water in the firebox or rust on the damper. The cap’s top plate is cracked, the lid-to-base seal has failed, or the cap was never properly sized to overhang the flue tile. Water hitting the smoke shelf migrates down and pools behind the damper.
  • Animals or nesting debris in the flue. The mesh is missing, too large, or rotted out. Squirrels in Crystal Lake’s older neighborhoods near Three Oaks Recreation Area are persistent; a proper cap with intact 5/8″ mesh stops them cold.
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Replacement Cost & What’s Included

Cap Type Typical Range What’s Included
Single-flue galvanized, standard fit $340-$420 Cap, base ring, stainless fasteners, reseal of existing crown if sound
Single-flue stainless steel $420-$540 Cap, custom base adapter, fasteners, crown reseal, 10-year warranty on cap
Multi-flue stainless, custom fit $540-$620 Cap, mounting brackets, crown repair compound if needed, 10-year warranty
Crown rebuild required Add $180-$340 Removal of deteriorated crown, pour of new concrete crown, cap installation

What drives the range: flue diameter, whether your existing cap is screwed or cemented in place, and crown condition. We don’t know which until we get eyes on it. Every quote is written, itemized, and signed before work starts - Haven Standard Clause 1. The cap itself carries a 10-year warranty; our labor is covered by the 365-Day Done Right Promise.

DIY or Call Us?

Professional chimney sweep cleaning a brick fireplace interior
DIY or Call Us?

Here’s what you can safely check from the ground: whether the cap is visibly loose, whether mesh is intact, whether rust streaks are present. Use binoculars. Don’t climb the roof. Chimney work at height is genuinely dangerous, and a cap replacement involves working at the flue edge with tools in hand - one misstep or a rotted roof bracket, and the fall is serious.

Where DIY goes wrong: buying the wrong cap diameter (we’ve seen 7″ caps forced onto 8″ flues, creating a gap that funnels water straight in); using non-stainless fasteners that seize or fail within two seasons; and missing crown damage that’s the real source of the leak. We bring the right cap, measured to your flue, with the documentation to back it up. Call (815) 923-3185 for a written estimate - estimates are free, and we stock common Olympia Chimney-compatible sizes on our trucks.

Get the price in writing before anything starts.A real person answers, day or night.
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