Masonry fireplaces are expensive to build. That’s why many homes have a metal (gas) fireplace insert with metal exhaust pipe inside a wood framed “bump out” with siding on it like the rest of the house. The problem is twofold - the metal fireplace housing is very leaky - allowing cold air from behind it to leak into your living space. Second, the metal housing is not insulated everywhere. The Triple H Crew went in and Insulated this Fireplace Bump Out with an airtight, insulated compartment behind the fireplace. Resulting in less drafts, warmer rooms, and warmer floors.