Today, Greenfabwas awarded LEED Platinum certification by theUSGBC for achievement in green homebuilding and design. Greenfab’s prefabricated, modular home is the first to be certified LEED Platinum in the state of Washington, and it features healthy living spaces, sturdy construction, and a completion rate that is 50% faster than traditional homes built on-site. The home is part of Greenfab’s 1300 Series, which is now available nationwide.
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Located in Seattle, the 1,870 square foot Greenfab home consists of three bedrooms and focuses heavily on reducing energy use by incorporating double-glazed windows with a U-value of .35, R-26 exterior walls, which are 35 percent better than code (R-17), Energy Star rated appliances, energy recovery ventilation, heat pump electric heating, backup radiant electric heat, and a GE hybrid heat pump water heater. A digital monitoring system collects and measures realtime data about weather, energy and water use, and provides constant feedback to troubleshoot and monitor performance through an interactive iPad/iPhone based application. Necessary wiring for solar panels in the roof has also been installed and approved for future use.
Water conservation strategies include a series of three, 300 gallon storage basins that filter and treat grey waterfrom showers, bathroom sinks and the washing machine. A rain garden infiltrates overflow from the grey water treatment system to recharge ground water. A 1,400 gallon above ground water storage cistern captures rainwater for on-site irrigation and toilet flushing. Low-flow plumbing fixtures and dual- flush toilets contribute to a significant reduction in water usage.
Clean indoor air circulates throughout because all of materials used to construct the home were stored and assembled in a controlled factory environment, meaning that there is no risk of mold or mildew, which can happen during traditional construction when building materials are stored outdoors and susceptible to rain and damp weather. The indoor setting also prevents dust and dirt from contaminating ductwork, which can cause long-term adverse indoor air quality problems. All materials, including paints, finishes and adhesives are low or no VOC (volatile organic compounds), and formaldehyde-free.