Faced with meeting increasingly stringent energy codes and a growing demand for green, high-performance features, builders nationwide are looking to maximize the energy efficiency of their homes without blowing the budget. The easiest and most economical step to creating energy-efficient homes is to master building envelope and air sealing design.rnBased on field work with builders across the country conducted by the NAHB Research Center under DOE's Building America program, we have found certain practices to be highly beneficial in creating tight and efficient building envelopes. The following practices can lead to better-performing wall systems with improved energy efficiency, moisture resistance, durability and ease of installation, as well as lower construction costs.
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