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The Homeowner’s Guide to Chimney Cap Replacement and Maintenance

Posted on January 24, 2024

Estimated Reading Time : 5 Min.

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Chimney Cap

Despite its seemingly small appearance, a chimney cap is an essential component of your home as it keeps your fireplace and chimney in good condition. Chimney caps are essential for lowering the risk of fire, preventing animal intrusion, and shielding your home from water damage. 

In this blog post, we’ll discuss how to replace your chimney cap, why keeping it in good shape matters, signs it might be failing, and whether you should install it on your own.

How To Replace A Chimney Cap

Follow these easy steps to replace your chimney cap to ensure the safety and performance of your chimney.

1. Choose the Right Cap:

Measure your chimney and flue to find the correct-sized cap. Get one that fits well to make sure it functions properly.

2. Prepare the Chimney Crown:

Clean the chimney crown thoroughly before placing the new cap. Remove any dirt or old materials for a smooth surface.

3. Install the Cap:

Place the chosen cap on the chimney, ensuring it lines up with the flue. Use screws to securely attach it, preventing movement.

4. Regular Maintenance:

After installing the new cap, regularly clean the mesh to prevent blockages. Additionally, have a professional inspect it annually to catch potential issues early on.

Maintenance Tips For After a Chimney Cap Replacement:

Once you’ve installed a new chimney cap, it’s important to maintain it properly. Follow these simple tips:

1. Clean the Mesh Screen:

Safely reach the cap and use a wire brush to clean the mesh screen. Leaves and soot can block it, leading to chimney issues and fire risks.

2. Use Dry Wood:

Burn dry, seasoned wood in your own fireplace to reduce creosote buildup in the chimney and cap. Wet or green wood creates more byproducts, increasing creosote.

3. Regular Checkups:

Schedule yearly chimney cleanings and inspections to ensure the cap is in perfect condition and free from any issues or damage.

4. Keep Out Moisture:

Make sure the chimney cap is keeping snow, sleet, and rain out of the chimney on a regular basis. It is essential to have this protection to prevent moisture damage.

5. Replace When Needed:

If you notice any damage or if the cap is lost in a storm, don’t delay. Replace it promptly to maintain the safety and functionality of your chimney.

Chimney Cap

How To Know When Your Chimney Cap Needs To Be Replaced

Replacing a chimney cap is important, but how do you know when it’s time? The following points will help you understand the right time for a chimney cap replacement: 

#1. Visible Damage:

Chimney caps might show signs of wear and tear over time. Examine the cap closely for any cracks, dents, or rust. These are signs that it may not be doing its job and needs to be replaced. 

#2. Rust or Corrosion:

Since chimney caps are often made from metal, prolonged exposure to weather conditions can lead to rust. Rust weakens the structural integrity of the cap, making it less effective. If you notice rust on the cap, it’s a signal that it might need to retire.

#3. Loose Components:

Think of the chimney cap as a puzzle, all its pieces need to be in place for it to work correctly. Ensure that every screw, bolt, or other parts are securely in position. If anything is loose or missing, it can leave your chimney vulnerable.

#4. Debris Buildup:

Chimney caps act to prevent things like leaves, twigs, and animals from entering your chimney. If there’s a buildup of debris inside, it suggests the cap isn’t doing its job properly.

#5. Water Intrusion:

A high-quality cap is a waterproof shield for your chimney. If you observe water inside your fireplace or chimney, it could be a sign that the cap is either damaged or not fitting properly, allowing water to infiltrate.

#6. Evidence of Animals:

If you discover nests or hear sounds from within your chimney, it’s an indication that the cap might be failing in its role as a protective barrier against wildlife intrusion.

#7. Smoke Issues:

A properly functioning cap aids in maintaining a clear pathway for smoke to exit. If the cap is damaged or improperly fitted, it can disrupt the airflow, causing smoke to enter your home. Investigate the condition of the cap if you experience issues with smoke.

#8. Stains on Interior Walls:

A compromised cap can allow water to seep into your chimney, leaving stains on walls or ceilings near the fireplace. These stains are visual cues of potential water damage inside your home, highlighting the importance of a well-maintained cap.

#9. Age of the Cap:

Every part of your roof has a lifespan, and so does your chimney cap. If your cap is getting old, it may be more susceptible to wear and tear. The age of the cap could signal the need for a replacement to ensure continued protection.

How to Choose the Right Chimney Cap for Your Home

Picking the right chimney cap for your home is crucial, and here are some tips to help you decide:

#1. Material:

Chimney caps come in a variety of materials, each with its own advantages and drawbacks. It’s important to understand your specific needs before choosing a cap. Some popular options include: 

  • Galvanized Steel: It’s affordable but may not be as weather-resistant.
  • Aluminum: Lightweight and corrosion-resistant, a middle-ground option in terms of cost and durability.
  • Stainless Steel: Robust, corrosion-resistant, and often comes with a moderate price.
  • Copper: Premium choice for exceptional durability and an elegant look, though more expensive.

#2. Mesh Size:

Choose a mesh size that stops even small embers. This boosts safety by preventing sparks from causing potential problems.

#3. Flue Shape & Size:

Check the shape and size of your flue before getting a chimney cap. Different flue designs need specific cap configurations for the best performance.

#4. Warranty:

Look at the warranty. Manufacturers often offer warranties on their products, showing their confidence in the product. Choose a cap that comes with a lifetime warranty for the best protection. 

How Much Does It Cost To Replace A Chimney Cap?

In Wisconsin, the cost of replacing a chimney cap can differ based on the material, size, and shape of the chimney. For example, a stainless steel chimney cap generally costs between $50 and $300, while a copper chimney cap is much more expensive at $175 to $800. 

When thinking about a replacement, it’s best to speak with an expert to ensure correct installation and adherence to local building codes.

Do I Need A Contractor To Replace A Chimney Cap?

Chimney caps are typically installed by professionals like roofers or chimney sweeps. It’s advisable to hire a trained expert who is familiar with fireplace and chimney mechanics, as well as roof installation. These professionals have the necessary skills and expertise to ensure a secure and proper chimney cap installation. 

While installing a chimney cap isn’t overly complex, having the right tools, knowledge, and confidence to ensure a safe completion is crucial. The process involves understanding roofing and chimney mechanics and using safety gear for working at heights. Therefore, choosing a licensed and insured professional with experience in your specific chimney type and cap is essential for a secure installation.


In summary, it’s crucial not to underestimate the importance of replacing and maintaining your chimney cap. Being proactive and promptly addressing any issues will guarantee the continued safety and effectiveness of your chimney cap.

Need Help With Replacing Your Chimney Cap? We’ve Got You Covered!

A well cared for chimney cap is crucial for the functionality of your chimney. Regular Roof inspections from BRH Enterprises and timely replacements play a huge role in ensuring a secure and efficient fireplace. 

Take control of your chimney’s health, and enjoy the warmth and comfort it brings to your home. Get in touch with BRH Enterprises for expert, high-quality chimney cap replacement services in Wisconsin. Reach out to us at (920) 249-4228 today!

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