Double Stud Wall Simplified – Low Cost, High Performance

…thickness to meet your design R-value Space between walls for continuous insulation Utilization of dense-pack insulation (Gutex wood THERMOFIBER, cellulose, fiberglass, mineral wool, or Havelock Wool). No special materials or…

The Zero Energy Home Design Process

High-performance homes, especially those striving to achieve net zero energy performance, employ a number of energy efficient materials and construction practices that need to be integrated into the earliest phases…

Do It Yourself

…fiberglass or cellulose ceiling insulation or have an insulation contractor blow it in. Install floor insulation or basement wall insulation. Have your plumber install a heat pump water heater to…

Affordable Zero Energy Homes Take Creative Collaboration

…Mehlschmidt home, the double-stud walls are filled with dense-pack cellulose insulation. Double-studs offer plenty of space for insulation, but Davenport became disenchanted with tilting up heavy assemblies or framing the…

Builder Blends Zero Energy with Montana Style

…The Path to Efficiency “The most important detail is air tightness,” says Barta. “You can put in lots of insulation, but it doesn’t matter if the home is leaky. I…

Innovations in a 107-Year-Old Net Positive Victorian Retrofit

…Forty percent of the insulation is inside the 3M barrier, so moisture will evaporate back into the living space where humidity averages a comfortable 40-50%. Sixty percent of the insulation

The Mystery of Misapplied Mini-Splits

…Load Homes It’s certainly possible to install a ductless mini-split in a conventional home with “typical” insulation and air sealing, but unless you improve the energy efficiency of the building…

Mandalay Homes: Zero Energy Grid-Integrated Neighborhoods that Solve the “Duck Curve”

…set of proven energy-efficiency features: Spray foam insulation: Walls cavities are filled with open-cell spray foam. While the insulating value is about the same as fiberglass batt insulation, foam does…

Passive House Busts High Cost Myth

…simple design, lots of insulation, super air sealing and modest package of mechanical equipment. The result attracted quite a lot of attention, including the 2017 Passive House of the Year…

Wall Sensor Measures Moisture in a Double-stud Wall

…of energy, there is considerable emphasis on building insulation and air sealing. In most climates, it’s less expensive to increase wall insulation than it is to install a ground source…

Prefab Zero Energy Homes

…that supports itself. Various thicknesses are available depending on the insulation value needed. Window and door openings are generally cut at the factory. SIPs provide defect-free insulation and good air…

Design Strategies for Zero Energy Homes That Builders Will Thank You For

…material to enclose the insulation. (See 3 above.) If more than one ceiling height is present, develop clear details for air sealing, insulation and rigid backing. 11) Based on an…

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