Done after hours, and on weekends this is our current office space. The floor insulation is Owens Corning R30; the walls are the new fiberglass r-15 and the roof r-22! And being a small space, it holds heat or A/C very well. The finishes are Pvc trim, Fiberglass reinforced plastic, FRP (The wall covering was chosen because it’s more lightweight and modern). The window trim is all Pvc, with Milgard windows, (custom Euro style) similar to casement but have no crank hardware and swing-out freely. After installing epoxy flooring, we built in a hip roof, giving the finished project a reliable metal roof.