Jerry, if you cut the insulation about a half of a inch bigger each way it stay's in place. When you place your stuff back inside the cabinet you can't really see it. We pulled the drawers out and did all the outside walls. Thermal digital gun reveals 9 to 11 degrees difference. This is easy, light, very cheap and very easy to do. Makes a huge difference in the summer as well. There is a big loss of heat lost because of the skylight over the shower. We have two layers over that. You can buy a digital thermal gun fairly cheap, this is how we find cold spots in our coach. Behind the TV over the windshield there is usually NO insulation at all! We installed fiberglass batting there which made a huge, huge difference with temp and wind noise when driving. We put fiberglass insulation in small plastic bags around the water heater which makes a big difference in recovery time especially when the outside temp is low and the water hose is used. The reason we used the plastic bags is in case of a leak the insulation won't be soaked, learned that the hard way when a supply line snapped! Hope this helps.
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012