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Frequently Asked Questions

What makes a Lock-Top or Lyemance Damper a great energy-saving alternative to your original fireplace damper?

These two great top sealing dampers both seal with a silicone rubber gasket. When you close our dampers warm air is sealed in and cold air is sealed out. This tight-sealing gasket means our dampers will reduce unwanted heat loss by 90%. And, unlike replacement throat dampers, the Lock-top and Lyemance Dampers have a lifetime warranty.

Take A Tour Of Your Chimney
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Chimney Terms

Stainless Steel Chimney Liner

Stainless steel pipe, either rigid or flexible, made for relining flues of masonry chimneys when the original clay liner has cracked or broken. May also be used to create a lining in a masonry chimney that was made without a clay liner.

Chimney Caps

Protective coverings for chimneys usually made of aluminum, galvanized or stainless steel, or copper. Most chimney caps have a mesh screening that serves the dual purpose of spark arrestor and barrier against animals. Chimney caps also prevent rain from entering the flue of the chimney.

Top-Sealing Dampers

A device installed at the top of a chimney for the purpose of sealing the flue shut when the fireplace is not in use. They are often used as replacements for throat dampers that are installed just above the firebox when a masonry chimney is built. Lyemance and Lock-Top top-sealing dampers are as much as 90% more efficient than throat dampers because they provide a silicone rubber gasket seal rather than metal to metal.