Chase Cover Problems On Your Chimney


We talk about chimney maintenance a lot, because it is truly the most important part of keeping your wood-burning fireplace or stove in top working order. As many chimney professionals will tell you, the chimney does most of the work when it comes to lighting fires and heating your home. It is important to understand all components of your chimney, how they work and what they do. If you don’t understand how your chimney and fireplace work it can be easy to use them incorrectly.

Rusty Chimney Chase Cover - Aurora IL

Chase Cover Versus Chimney Cap

Many people confuse the chase chimney cover with the chimney cap. To be clear, the chimney cap is the installed piece that is placed directly on top of the chimney opening in order to prevent moisture, debris and small animals from entering the chimney and wreaking havoc on the masonry inside. On the other hand, the chase cover of the chimney is placed around the entire chimney and serves to seal the flue system as well as the chimney. Chase covers are popularly used on fireplaces that are pre-fabricated and were installed in the 1970s and 1980s.

Why Is My Chase Cover Rusting?

Chase covers are typically made of galvanized steel and installed on chimneys surrounded by wood, metal or vinyl siding. Galvanized steel is prone to rust – more frequently during harsh winter months or in any regions where a lot of rain and snow is typical. In other cases, the chase cover can rust because it wasn’t installed properly in the first place. If not sealed properly, or installed carefully you could run the risk of having water pool on your chase cover, which can lead to rusting more quickly.

You want to replace a rusted chimney chase cover because further erosion could lead to chimney damage including:

  • Cracked or crumbled masonry in the chimney
  • Collapsed chimney
  • Moisture inside the chimney
  • Creosote build-up inside the chimney
  • Inability to light fires and/or keep fireplace and woodstove fires burning hot enough

In other words, chase cover rusting is like any other type of chimney damage; preventing further damage is the best way to avoid costly repairs and dangerous damage. You can help maintain the integrity of your chimney by keeping an eye on the exterior, as well as the chase cover. Additionally, hiring a professional company like Pozzi Chimney Sweep in Aurora IL can help you avoid any repairs. Your professional chimney sweep will safely inspect the chimney to make sure the chase cover isn’t rusting. If your chimney sweep notices any rust, they can recommend an appropriate replacement as well as execute the repairs safely and efficiently.

Don’t wait until it is too late to replace your chase cover, and don’t try to make any repairs on your own. Chimney maintenance is dangerous, and if not done correctly can be costly. Safe removal of the chimney cap, seal and the chase cover are all specific repairs that are best left to the professionals. Have an experienced chimney sweeping company inspect your chimney and make the necessary improvements to keep your chimney in top shape after a long winter season.