Bayseal, a half-pound spray polyurethane insulating foam, features a new formulation that eases application, the maker says. It blows with water instead of fluorocarbon- or cyclopentane-based agents, making it more environmentally friendly. The foam insulation provides an effective seal without seams and gaps, improving energy efficiency, the manufacturer adds. 800-221-3626. www.bsna.com. 
