One of the many steps involved in helping to make this Leesburg VA home more comfortable was adding a Rock Wool wrap to insulate and protect the chimney. Having been air sealed at the base of the chimney and then having the wrap extend above the top layer of insulation in the attic helps keep heated air passing through the chimney from escaping into the attic and making it too hot. Rock Wool is a fire safe material that both insulates and protects.