Chimney Cap Installation - Northwest Chicago Suburbs
"A $200 chimney cap prevents $2,000 in water damage and a $500 animal removal. It's the easiest decision in chimney maintenance."
A chimney cap is one of the most cost-effective investments you can make in your chimney's longevity. It keeps rain, snow, animals, and debris out of your flue — preventing damage that can cost hundreds or thousands of dollars to repair. GEM Chimney & Duct installs and replaces chimney caps throughout Wheeling and the northwest Chicago suburbs.
An uncapped chimney allows rain to enter the flue year-round, accelerating liner deterioration and causing rust on metal components. More urgently, animal nests in the flue create blockages that cause carbon monoxide to back-draft into the home — a potentially fatal hazard that develops silently.
What Is Chimney Cap Installation?
A chimney cap is a metal cover that fits over the top of the flue opening. It consists of a solid top that deflects rain and snow, mesh sides that allow combustion gases to escape while blocking animals and debris, and a mounting system that secures it to the flue or chimney crown. Chimney caps are available in galvanized steel, stainless steel, and copper, and in a range of styles to complement different chimney designs.
Without a chimney cap, your flue is an open invitation for rain, snow, birds, squirrels, and raccoons. Rain entering the flue accelerates liner deterioration and causes rust on metal components. Animals nesting in the flue create blockages that can cause carbon monoxide to back-draft into your home — and animal removal can be expensive and time-consuming. A chimney cap with a spark arrestor mesh also prevents burning embers from escaping the flue and landing on the roof or nearby combustibles.
Signs You Need It
- Your chimney doesn't have a cap (visible from the ground or confirmed by inspection)
- You've found evidence of animals in the fireplace or flue
- You notice water in the firebox after rain
- Your existing cap is rusted, damaged, or missing sections of mesh
- You've had a bird or animal nest removed from the flue
Our Chimney Cap Installation Work
Chimney Cap Installation in the Chicago Area: What You Need to Know
The northwest Chicago suburbs have a large population of chimney swifts, starlings, and house sparrows — all of which will nest in an uncapped flue. We also see frequent raccoon intrusions in chimneys without caps, particularly in wooded areas near the Des Plaines River corridor and forest preserves. Animal removal from a flue can cost $300–$800 and often requires waiting for young to leave the nest — a process that can take weeks. A chimney cap eliminates this problem entirely.
Expert Tip from GEM
Inspect your chimney cap every spring. Look for rust, bent or missing mesh sections, and caps that have shifted or come loose. A cap that's partially open is almost as bad as no cap — animals can still get in, and rain can still enter at an angle. Replacement caps are inexpensive and can usually be installed during the same visit as your annual cleaning.
Before & After
Before GEM
Uncapped flue open to rain, snow, and animals. Evidence of bird nesting in smoke chamber. Water staining on firebox walls. Liner deterioration accelerated by moisture.
After GEM
Properly sized stainless steel cap installed. Flue protected from rain, snow, and animals. Existing nest removed. Crown and flue opening inspected for related damage.
Our Chimney Cap Installation Process
Flue measurement
We measure the flue opening precisely to ensure the cap fits correctly. An improperly sized cap can restrict draft or fail to seal the flue adequately.
Cap selection
We recommend the right cap material and style for your chimney — stainless steel for most applications, copper for premium installations, and multi-flue caps for chimneys with multiple openings.
Installation
We install the cap securely, ensuring it's properly anchored and that the mesh is intact and properly sized to allow draft while excluding animals and debris.
Crown and flue inspection
While on the roof, we inspect the surrounding crown and flue opening for any damage that should be addressed — and provide a written report of our findings.
Typical Pricing
All pricing is upfront — we provide a written estimate before any work begins. No surprises.
| Service | Typical Range |
|---|---|
| Standard stainless steel cap (single flue) | $150–$300 installed |
| Copper cap (single flue) | $300–$600 installed |
| Multi-flue cap (full chimney top) | $300–$700 installed |
| Animal nest removal + cap | $300–$600 |
A standard stainless steel chimney cap runs $150–$300 installed, depending on flue size. Copper caps are $300–$600+. Multi-flue caps that cover the entire chimney top run $300–$700 depending on size. We stock a range of cap sizes and styles and can typically install on the same visit as an inspection or cleaning.
Why Homeowners Choose GEM for Chimney Cap Installation
Registered in Illinois
We operate as a registered business in Illinois — not a fly-by-night operation.
Fully Insured
General liability insurance protects you and your home on every job.
Written Inspection Reports
Every service includes a written report documenting what was found and completed.
Upfront Pricing
We provide a written estimate before any work begins. No surprises on the invoice.
Same-Day Scheduling
Urgent situations get priority — same-day appointments available when needed.
10+ Years Serving the Northwest Suburbs
We've built our reputation one honest job at a time across 24 communities.
Schedule Chimney Cap Installation Today
Same-day scheduling available — takes 30 seconds.
Frequently Asked Questions About Chimney Cap Installation
Related Services
Chimney Cap Installation — All Service Areas
We provide chimney cap installation throughout the northwest Chicago suburbs. Click your city for local pricing and details.