Wood stove and biomass heat
Sealing your Chimney Could Save You Money on Energy Bills
...damper, located just above the firebox, is often made of cast iron and rarely provides an airtight seal. Top-sealing dampers or removable flue plugs are far more effective and should be used if you have one.
Top-Sealing Dampers
A top-sealing damper is installed at the very top of your chimney and features a rubber gask...
