I recently had my house inspected and this was identified. I don't know if the previous owners used this fireplace regularly but it looks like the insulation between the face of the fireplace is ex
insulation - Fibreboard in Chimney entrance, what can I do? - Home Improvement Stack Exchange
All About Attic Venting - GreenBuildingAdvisor
ENERGY SAVING: The fireplace cover can be tightly attached to the fireplace, effectively blocking the outdoor cold / hot air and achieving thermal
HOMWMPA Fireplace Cover, Fireplace Draft Stopper, Baby Proof Fireplace Blanket, Indoor Fireplace Insulation for Heat Loss, Save Energy and Decorative
Rebuilding/replacing fireplace facade?
insulation behind the fireplace facing?
insulation - Chimney with adjacent brick shafts into attic - Home Improvement Stack Exchange
Air sealing interior cinder block chimney with gaps
Fire Resistant Fireplace Mat Material:3-Layer Fire Retardant Pad,Our fire resistent fireplace mat is made of double-sided silicone coated fiberglass,
Fireproof Fireplace Mat,47×24Inch Half Round Fireplace Mat Fire Resistant Mat 3-Layer Fiberglass Fireproof Mat Fireplace Rug Hearth Pad with
The Ultimate Guide To Chimneys And Flue Systems - Bonfire
bathroom - How would insulate/fill this large enclosed area behind my gas fireplace - Home Improvement Stack Exchange
Stack Insulation Raining Down
Glossary of Green Building Terms for Consumers - BPC Green Builders
Retrofit RISE Blog