I was at Home Depot the other day and seen a roll of insulation they sell for water heaters. It looked to be foil on each side with a cloth/jute looking center. Dont remember the price but it wasnt too bad. Im looking at using this to do the whole cab but am worried about doing the doors in it. Looks like any water that migrates down from the window area would soak the material. Any recomendations on a good spray adhesive?