The Sustainable Design Center

Bio-regionally Appropriate Architecture Collaboration and Planning for a Cleaner, Healthier Planet

Robbins-off the grid home

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A 1310 s.f. 1 bdrm 2 bath home off the grid home constructed with an infill straw bale wall system and orientated for passive solar heating, cooling, natural ventilation and views to the Bay beyond. The home has a rainwater collection system, a photovoltaic system with battery storage, low voltage lights and a solar powered water pump. The straw bale walls (R-30) are complimented by 9-1/2” of open cell spray foam roof insulation (R-38) applied to the underside of the roof deck. A standing seam metal roof and Marvin integrity windows complete the thermal envelope. A wrap-around porch helps protect the walls from excess moisture, adds roof area for rainwater collection and provides additional covered living space. A manifold plumbing system, demand water heater and a ductless mini-split HVAC system maximize the homes water and energy efficiency. Low VOC paints and stains and bamboo floors will help with indoor air quality.    Owner’s Construction Blog