Hi folks. I'm hoping to get some comments on my insulation upgrade for my old (60's I think) camerette or small slide in camper without the cab overhang part. It has a double layer fiberglass roof with about 1 inch airspace between the two layers for 1/2 of the roof, and then there is a single layer fiberglass (the outside layer) with a wood panel covering the inside layer for the other 1/2 of the roof. So from the door at the back up to about 1/2 way the ceiling is wood and then fiberglass for the last 4 feet up to the back of the cab. The whole outside part of the roof is fiberglass. The walls are wood panel. It gets cold in there and I was thinking about drilling holes and spraying cans of that expanding foam in there to increase insulation. There is fiberglass pink insulation in there now but it is so thin that it does almost nothing. On sunny days the sun shines through the 1/2 of the roof that is fiberglass and you can see that there isn't much insulation in there. So I was thinking about carpeting on the walls and ceiling once I spray the foam in. Any comments / suggestions appreciated as I'm not much of a handy man. Thanks