When designing and building a highly energy efficient building, the main thing is taking time and care in construction and the details. Precision cuts and assembly minimize the potential gaps that can permit air - and thermal energy - to penetrate the shell. We use a series of layered membranes to minimize air tranfers and manage moisture. The big thing is taking time to carefully seal every seam and gap with the right materials - extrusion insulation, sealant tapes, and proper installation of insulation. It's somewhat tedious work, but it's crticial for high energy performance of the Geobarn over its lifetime of service. And since our buildings are so much more rigid than traditional stick-framing, they are more resistant to shifting over time... which means they retain that high energy performance much better than other methods of construciton.