Icynene. The company’s LD-R-50 spray-foam insulation has earned the U.S. Department of Agriculture’s BioPreferred status for use of rapidly renewable materials. The insulation is made using castor oil, a natural product that is extracted from the castor plant. The product is water-blown and free of HCFCs and PBDEs. 800.758.7325. www.icynene.com

Trout River Lumber. Martha Mills antique heart pine flooring is reclaimed from a textile mill in Thomaston, Ga., that once supplied cotton tire cord to B.F. Goodrich. The wood has a tight growth ring pattern and an amber color. It is available unfinished with a 61/4-inch face width or prefinished in a 51/8-inch face width. 434.645.2600. www.troutriverlumber.com