Insulating 1840's Boston house
DH and I are about to search for a contractor to insulate our old house - approx 3,500 sq. ft, built in 1840. The house has asbestos siding, stone basement, 3 floors incuding unfinished attic. Need advice.
I have read threads about fiberglass, foam, cellulose, denim and now wool - and "R factors". So I'm pretty confused. Due to the asbestos, I assume it will have to be installed from the inside. Also, we are not DIY'ers, so won't consider doing it ourselves. Obviously cost is a factor, but not necessarily the deciding one. Environment is a factor for us too.