Check out this Canadian company from Lethbridge. I insulated my boats engine cover using their Hliner foil backed foam insulation. Great company, they'll send you a sample pack for a couple of bucks of some of the insulation and deadeners they offer. Excellent site with comparisons of different products, technical info, lots of customer testimonials and install pictures. When I'm ready to do my floors, firewall and doors, these will be the guys I use.