Polystyrene foam insulation is affordable, efficient and easy to use. Polystyrene foam insulation products can be found in a range of stores. You can find polystyrene sheet foam insulation, polystyrene foam insulation kits as well as Polystyrene sheet foam board insulation. The right type of foam insulation should fit your house and your needs. No matter whether you're looking for spray foam insulation kits, foam sound insulation, foam pipe insulation or foam board insulation, you're sure to find products that fit your needs. 
SUPER TUFF-R 1/2"T x 8'L x 4'W R-3.3 Polyisocyanurate Rigid Foam Insulated Sheathing
"Reduced energy loss- lower heating & cooling bills
High R-value. Unsurpassed durability. Moisture resistant facers. Lightweight, easy to install" 
GREAT STUFF 10 Lb. Gaps & Cracks Insulating Foam Sealant Kit
"Interior or exterior use. Cures rigid. Paintable, sandable, and stainable. UL Classified" These foam roofing products can be found at lowes.com
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