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Adhesive caulk is used to seal seams and attach the multiple layers of rigid insulation
Adjustable weatherstripping can be installed around the interior side of the door frame to help keep out wind-blown rain and embers and hot gasses from wildfires (FEMA 577).
Advanced framing details include corners that are constructed with fewer studs or studs aligned so that insulation can be installed in the corner.
Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.
Advanced framing details include open headers and reduced framing around windows and two-stud corners to allow more room for insulation in the wall cavities while reducing lumber costs.
Advanced framing details include using the minimum amount of wall studs permitted by code.
Advanced framing techniques include constructing on a 2-foot grid where wall studs are placed 24 inches on center and aligned with roof and floor trusses for a continuous load path from roof to foundation.
Advanced framing techniques including 2x6 walls spaced at 24 inches on center and ladder blocking at wall intersections allow more space for insulation in the wall cavities while open-web floor joists provide space between floors for ducting.
After all holes through the ceiling are air sealed and the baffles have been installed, the insulation can be installed
After attaching netting to the 2x6 studs, workers fill the wall cavities with R-23 of blown fiberglass made from recycled bottles.
After completing the air leakage tests, the energy rater uses a broom handle to remove the register-sealing tape.
After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
After setting precast concrete basement walls on an 8-inch bed of trap rock, this builder sprayed 2 inches of closed-cell spray foam directly onto the ground then laid piping for radiant floor heating before pouring the concrete floor slab.
After spraying the 2x6 wall cavities with 2 inches (R-13) of closed-cell spray foam, the walls are covered with netting and an additional 3.5 inches of fiberglass (R-13) is blown in.
Air barrier is continuous across several components of the lower section of wall
Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)
Air handler platforms used as return air plenums can draw air from vented attics and crawlspaces through other connected framing cavities
Air leakage from the conditioned space to the basement foundation wall can lead to condensation or moisture issues in a conventional blanket insulation installation.
Air leaking through the home's envelope wastes a lot of energy and increases energy costs.
Air seal a heat pump or air conditioner air handler cabinet at all seams, holes, and junctions
Air seal above-grade sill plates adjacent to conditioned space to minimize air leakage.
Air seal all holes and seams in the furnace cabinet with mastic, foil tape, or putty
Air seal and insulate around the exhaust fan with a rigid foam box
Air seal and insulate double-walls that are half-height or full-height walls used as architectural features in homes.
Air seal and insulate flex ducts
Air seal and insulate the rim and band joists of walls separating an attached garage from the home’s conditioned space.
Air seal around all duct shafts and flues installed through ceilings, walls, or flooring to keep conditioned air from leaking into unconditioned space.
Air seal around all plumbing and piping installed through walls, ceilings, and flooring adjacent to unconditioned space to prevent air leakage.
Air seal around all wiring installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space.
Air seal around kitchen and bathroom exhaust fans to keep conditioned air from leaking into unconditioned space.
Air seal around recessed can light fixtures that are installed through ceilings to keep conditioned air from leaking into unconditioned space.
Air seal door and window rough openings with backer rod, caulk, or nonexpanding foam
Air seal drywall to top plates at all attic/wall interfaces to minimize air leakage.
Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam