There are a wide variety of chimney caps that you can use to protect your chimney from leaves, debris, and rainwater, as well as animal intrusion. Many affordable and attractive models are available through at Black Goose. We offer stainless steel or copper caps, top sealing dampers and Vacu-Stacks, plus many other brands and models. Missing, warped, broken, or leaky dampers cost homeowners hundreds of dollars a year. Independent laboratory tests show the Lyemance Top-Sealing Damper eliminates as much as 90% of the air loss that a traditional damper sends up the chimney. If you live in the mountains, foothills, or around trees or tall buildings, these obstacles may deflect wind down the chimney on windy days, counteracting it's normal upward flow. This problem, known as backpuffing, may be cured by a Vacu-Stack. The Vacu-Stack increases the amount of draft in proportion to the speed of the wind.