Basically, it is a flat bookshelf filled with books against a corner that leaves an empty triangular empty space behind. I have been storing some skis behind there but I sold them and I thought of adding some kind of absorbing insulation behind the bookshelf. No one would ever see it back there as it is obviously hidden by the bookshelf itself.
From what I hear, leaving the air gap behind the bookshelf is the best method, correct?
From what I hear, leaving the air gap behind the bookshelf is the best method, correct?