Going green at the New England Home Show

John McNamara holds up a Nudura building structure. The insulated concrete form is CFC and HCFC-free and when used to build foundations can save up to 50 to 70 percent on heating bills.
John McNamara holds up a Nudura building structure. The insulated concrete form is CFC and HCFC-free and when used to build foundations can save up to 50 to 70 percent on heating bills.
(Photo and text by Chris Brook/Boston.com)