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The "freaky-cheap" aspect of WOFATI is fundamental to its appeal and accessibility. Inspired by Mike Oehler's pioneering work in earth-sheltered building, WOFATI prioritizes utilizing readily available natural materials, primarily wood and earth, minimizing reliance on expensive, manufactured products. By embracing the "freaky-cheap" ethos, WOFATI construction drastically reduces building costs, making sustainable living a more attainable reality. The emphasis on "soil on wood" construction eliminates the need for a traditional concrete foundation, further reducing expenses. This approach also facilitates rapid building times, as demonstrated by the construction of WOFATI structures at Wheaton Labs, such as Allerton Abbey. The use of recycled or salvaged materials, whenever possible, further contributes to the affordability of WOFATI buildings. By minimizing material costs and construction time, WOFATI empowers individuals to create sustainable and comfortable dwellings without incurring significant financial burdens.
WOFATI, an innovative sustainable building technique coined by permaculture advocate Paul Wheaton, stands for Woodland Oehler Freaky-cheap Annualized Thermal Inertia. The design utilizes readily available natural materials like wood and earth to create a "soil on wood" structure that harmonizes with the surrounding woodland. The "freaky-cheap" construction methods pioneered by Mike Oehler and further developed by Wheaton significantly reduce building costs. WOFATI structures are characterized by a double layer of membrane, a "two-skin" system that encapsulates the earthen roof, ensuring dryness and longevity. The principle of Annualized Thermal Inertia is key, using the earth's mass to regulate temperature, providing passive heating in winter and cooling in summer. WOFATI houses feature large windows on the uphill side for optimal passive solar gain, while the downhill side typically boasts a large gable roof, also incorporating glazing for natural light penetration. Allerton Abbey, located at Wheaton Labs, serves as a prime example of a WOFATI house
The SKIP program, or Skills to Inherit Property, connects aspiring homesteaders ("Skippers") with landowners ("Otisies") seeking successors for their properties. Anyone interested in acquiring land for sustainable living can join by creating a free account on permies.com, a website dedicated to permaculture. Participants select "Badge Bits" (BBs) to complete from the PEP curriculum (Permaculture Experience according to Paul), which encompasses over 1,400 practical projects demonstrating essential permaculture skills. Skippers document their BB completion with photos and videos uploaded to permies.com for review and verification by the community. By completing BBs, Skippers earn progressively advanced badges – Sand, Straw, Wood, and Iron – signifying their skill level. These badges are displayed on their profiles, showcasing their dedication and expertise to potential Otisies. For hands-on learning, Skippers can attend the annual SKIP event at Wheaton Labs, which costs $2,250, or engage with the supportive community on the permies.com forums.