Super-Seal the Net Zero Building Envelope

…exterior structural sheathing or the interior drywall, and then to bridge the gaps – or joints – between them in order to completely seal the boundary. Next, select the best…

Super-Insulate the Net Zero Building Envelope

…important to insulate the walls, floors, and ceilings with the type and thickness of insulating material that fits the specific needs of each surface, and to design wall, floor, and…

Wall Sensor Measures Moisture in a Double-stud Wall

…comparison of two high-R wall options. You could attach several inches of rigid insulation sheathing on the outside of the walls or build a thicker cavity using the double-stud approach….

Three Simple, Low-Cost, High-Performance Wall Assemblies

…to create a variety of wall thicknesses. Early “super-insulated” homes in cold climates often used the double-plate approach for walls that were 16- to 24-inches thick. Because plates and studs…

High-R Walls, Part 1: Wall Assembly

double stud walls with plywood gusset. The only potential drawback to double wall construction is uncertainty about moisture condensation in thick walls. However my judgment over the last ten years…

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…

High-R Walls, Part 2: Moisture Content

…you can’t go wrong with rigid insulation sheathing or with double-stud walls filled with fibrous insulation. While the double-stud approach does have advantages, it also has a potential drawback –…

Improving Overall Wall R-Value With Windows

…many options for creating better insulated walls, such as staggered stud framing, double walls, or I-joist walls. These all allow for thicker, better insulated walls with a higher R-Value. However,…

One of The World’s Most Air Tight Home: 0.05 [email protected] Pascals

…parts of the lower 48, would there be problems with condensation on the plastic sheeting? Tom Marsik: A 12″ thick double-stud wall that has plastic on the outside of the…

Zero Energy Multifamily Buildings: Three Case Studies

…providing a great starting point for heating and hot water. 15% of the energy use was reduced through building super insulated walls and ceiling. The zHome’s R-38 walls are twice…

Builder Blends Zero Energy with Montana Style

…generally use casement windows, because they are tighter than other window styles.” His earlier projects employed double-stud wall construction for thick insulation and airtight drywall (ADA) to reduce air leakage….

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…