d079b06a_on___Green_Home_Guide_by_USGBC__Application_Tips
[Material] Polystyrene–Expanded (EPS) Foam Insulation [Pros] * No HCFCs * Recyclable * Typically no indoor air quality effects [Cons] * Made from petrochemicals * Contains highly toxic HBCD brominated flame retardant and other toxins [Application Tips] 
Foam insulation boards. Appropriate for larger projects or new construction in areas with low to no moisture. Best for interior basement walls, beneath siding, and attic ceilings; can be used below grade if coated with foil or plastic.
Buyer’s Guide to Green Insulation - Green Home Guide by USGBC
Application Tips