Originally Posted by
John McClanahan
T1/4" luan (what I referred to as underlayment) is lighter and stiffer than OSB, so I think that's what I will use. $3+ a sheet isn't going to break the bank. I realize there is the risk of sag, but I want something that I can install myself, if rounding up help gets to be a problem. Plus my shop is full, and I will be working around all of my stuff. The main reason for the ceiling will be for adding insulation and to reflect the light, more than for looks.
John