We got the second layer of 1" insulation in the ceiling over the holiday weekend. The first layer was put up running the width of the trailer between the trusses. This second layer was put up running the length of the trailer. We put gorilla glue construction adhesive on the metal ceiling trusses, put up the insulation and held it tight by screwing wood strips temporary across the insulation until the glue dried.
Putting gorilla glue on metal truss.

Ceiling with wood strips holding up 2nd layer of insulation.

We are very fortunate to have an open pole barn to work under. The open part of the barn is about 36 ft. long and 28 ft. wide. Our next task is to cut the studs and put framing in for the windows. This is the scary part for us. I know everyone gets to this point and is hesitant but you have to cut the hole in the skin for the window at some point. Think we will put the windows in the doors first, then the side wall windows. We will definitely use templates.