Lock top damper cable
Q: Jason – I currently have a chimney cap installed with a stainless steel wire and handle on the end which is mounted to the side of the firebox on the face of the brick. The metal damper is removed and this wire extends up through the smoke chamber and up the flue to the cap. Can I still install a Chimney Balloon? – JR
A: JR – This type of damper is often referred to as a Chimney Top Damper. Many are made by a company by the name of Lymance or Seal tight.
Yes, you can use a Chimney Balloon in this configuration. As the Chimney Balloon inflates it will envelop the wire (as in the picture above). You will find the double draft protection of the chimney top damper and the Chimney Balloon together to be very effective. Here is a link to an article that talks further about lock top chimney top dampers and Chimney Balloons work together http://www.chimneyballoonusa.com/blog/2007/11/my-lock-top-or-.html – Jason