benmarshall
Waltham, MA, US
Member
Originally a physical chemist. I started doing building envelope and indoor air quality consulting in 2001. In 2003 I opened an insulation company and currently manage 40+ insulation installers on projects throughout New England. Licensed GC, HERS Rater, Certified Spray Foam Quality Assurance Provider, Previously a Trainer for BPI and LEED AP
