Specialists in building envelope commissioning and air tightness testing throughout New England, we have collaborated on projects such as schools, manufacturing plants, outpatient surgery, dormitories, offices, courthouses, banks, laboratories, multifamily housing, and military structures.  We have blower door tested buildings as large as 200,000 sf and as tall as 10 stories. We have tested hundreds of envelope details during construction and know how to make improvements to these details before it is too late and too costly to fix.  We have the knowledge, experience, and equipment to make envelope commissioning a smooth process for your project. We aim to help change the face of renewable energy by degrees.  We believe in enthusiastic action preceded by thorough planning.  Through efforts towards change in small degrees we can improve energy efficiency for the better.


p. 860.286.9171

Serving Vermont, New Hampshire, Maine Massachusetts, Connecticut, Rhode Island, and New York

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Our Services

Experts in the construction industry, we pride ourselves on our knowledge and experience in energy efficiency.

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Past Projects

Our project list contains a variety of building sizes and complexities. 

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ZBD Newsletter

"ZbD: Notes From the Field" covers technical articles, as well as industry related topics we would like to further review.

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