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To protect the health of our staff and our customers, Efficiency Vermont offices are closed to the public. We have cautiously begun scheduling project related site visits when required. You can find more information on our safety protocols here.
We know that you need support in reducing energy costs now more than ever, and we will continue to launch new offers and programs over the course of the summer. In the mean time, our customer support team is available to help you remotely. Contact us at (888) 921-5990 or firstname.lastname@example.org.
What is a building envelope or thermal shell?
A building’s thermal shell or envelope consists of four layers: an insulation layer; an air control layer (e.g., drywall and other air barriers); a vapor control layer (e.g., paint on interior walls, paper facing on insulation); and a bulk water control layer (e.g., tar paper or other material behind siding).