Hi, I am having a AC attic system installed in my 1100 square foot ranch in a few weeks. Currently there are just the joists with insulation. I am going to add plywood and screw it down to about a 9 foot wide area the lenght of my house.

My question is, would the installers be glad that I plywooded or would they prefer to jump around on the joists? I planned on plywooding up in the attic anyway, but I figure that it will be easier to plywood before the install, right? It it that much more trouble to saw through plywood for the supplys? Thanks in advance.