Spray foam gets the firm's vote as an effective insulation. “We're convinced by the performance,” Harpman explains. A favorite is BioBased, which comes as an open-cell product that uses soybeans in its formulation or as a water-blown, closed-cell product. R-values range from 20 to 28. BioBased Technologies, 800.803.5189; www.biobased.net.


Louise Harpman, assoc. AIA, and Scott Specht, AIA, Austin, Texas, and New York, www.spechtharpman.com
Louise Harpman, assoc. AIA, and Scott Specht, AIA, Austin, Texas, and New York, www.spechtharpman.com

Specht Harpman
louise harpman, assoc. aia, and scott specht, aia
austin, texas, and new york
www.spechtharpman.com