Keith Warren developed this process himself (he owns the patents) for attaching straw bales to the exterior of a home in a way that allows the air to flow through the straw. This prevents condensation and protects the straw bales from the elements. What's more, straw is a locally available by-product of agriculture, and sequesters more greenhouse gasses than is required to plant, harvest and store. Warren's system adds an R value of 40 to the building in addition to what it already has. Since 2020, the home's 8.5 Kwh solar has provided all the energy requirements of the building, which is completely electrical. The home is tied to the grid, but generates more power than what is purchased during overcast days and extreme temperatures in the summer and winter.
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Straw Wrapped Homes provides a model for rejuvenating existing architecture from a 50 year to a 100 year life span incorporating net-zero energy efficiency, multi-generational living spaces with barrier-free access. The use of straw bales for superior insulation eliminates green house gas emissions associated with standard insulation materials. Keith Warren has been designing and building energy-efficient double wall homes since 1982.
Off the Wall Construction and Renovations Inc