Unlike an internal combustion engine, heat is your friend. You try to preserve all the heat you can to increase efficiency. One of the methods used to accomplish this is to insulate all of the hot water and steam lines. We decided to to use a 6 pound ceramic blanket as the primary insulation and then we wrapped it with 2" wide fiberglass tape. The insulation was then held in place with steel hay wire.
This was a dusty job with bits of fiber fiberglass ended up all over the place. My lucky lady ended up doing a lot of this wrapping which I am extremely grateful for! It also explains why it looks so nice.
