“I notice that there are different facings on fiberglass boards. What is the significance?” After checking out fiberglass boards, one may notice that boards come plain or faced. Furthermore, the facings can be different which may add to the confusion. There are two basic facings an acoustic fiberglass board may have, plain (no facing) or faced. A facing is a fiberglass fabric using the same material that is in the board, fiberglass fibers and a [...]