Extended Plate and Beam (EP&B) is an advanced wall system developed by Home Innovation Research Labs as part of the Building America Research Program. This innovative configuration has been tested in the lab and in four different demonstration buildings in climate zones 4, 5, and 6.
EP&B is based on tried-and-true lumber construction methodologies, integrating rigid foam sheathing with standard framing practices into a system that preserves many conventional construction features and minimizes builder risk. The EP&B wall system is composed of familiar wall materials but in a different configuration:
This guide contains all the information you need to build a high-performing wall at reasonable cost and effort that meets or exceeds energy code prescriptive insulation requirements for all U.S. climate zones.