Homebuilders can ditch the lumber and the expensive labor costs that go with it. These prefabricated, custom-made insulating panels are easier to assemble than conventional wood frames, and more energy-efficient. Kama’s K-tect system uses steel studs that are spaced apart to minimize heat loss and filled with ridged insulation called Neopor. Embedded with heat-deflecting graphite flakes and then expanded with steam, Neopor requires about 50 percent fewer raw materials than other polystyrenes. It’s also recyclable and resists fire, moisture, mildew and termites.
$7.35/square foot; kama-eebs.com