Showing results 1 - 45 of 45
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A 1- and ½-story home with a room located in the attic and the thermal boundary located at either a) the walls and ceiling of the attic room with small vented attic spaces or b) the roof line for an unvented attic
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A low-sloped shed roof with the thermal boundary located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic
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Compartmentalization isolates each dwelling unit within a multistory multifamily building, preventing vertical and horizontal airflow between units
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Compartmentalization isolates each dwelling unit within a rowhouse, preventing horizontal airflow between units
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Correct air sealing methods for common attic bypass air leakage paths.
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Framing is sequenced to install an air barrier of OSB, plywood, or rigid foam between the porch and the attic.
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Install a self-closing door with weatherstripping and thoroughly air-seal the shared house-garage walls to help keep automobile exhaust and other pollutants out of the home.
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Install rigid insulation and finish material below the framing and cavity insulation of a building overhang
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Installing a garage exhaust fan is one important step in keeping auto exhaust and other pollutants out of the home
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Insulating sheathing is installed on exterior of an existing framed wall with water control between existing sheathing and insulating sheathing
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Right - A “flash” seal approach with spray foam provides a continuous air barrier between the ceiling and walls of the garage and the living space.
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Right - House wrap is carefully installed from the top of the roof line to the foundation; seams are overlapped and taped to provide a continuous air- and weather-resistant barrier
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Right - Walls and ceilings shared by the garage and living space must be air sealed and insulated.
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Right – Closed-cell spray foam insulates and air-seals the rim joist above a shared wall between the garage and living space.
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Right – Closed-cell spray foam insulation in the shared wall between the garage and living space helps to air-seal the wall and protect occupants from garage pollutants.
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Right – Coated OSB provides a weather-resistant air barrier for this envelope of this home.
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Right – Every seam and nail hole in these garage-to-house walls is sealed with tape.
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Right – The seams are taped on the coated OSB sheathing of this home to provide a complete air barrier.
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Right – This attic knee wall and the floor joist cavity openings beneath it are being sealed and insulated with spray foam.
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Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall
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The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation
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The home is sheathed with rigid foam insulation and all seams and holes are taped to provide a continuous air barrier.
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The I-joist is continuous along the shared wall and serves as a natural air barrier between the garage and the house
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The polyethylene ceiling vapor barrier is sealed to form an air barrier around the exhaust fan in this very cold climate location (≥ CZ 6).
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The thermal boundary for a gable roof can be located at either a) the flat ceiling with a vented attic or b) the roof line for an unvented attic
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Use caulk or spray foam to air-seal all four edges of the blocking material in each joist bay.
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When using I-joists, make sure to fill in the gaps on each side of the blocking material to air-seal the joist bay where a wall separates conditioned and unconditioned spaces.
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Wrong - Cantilevered joist bay cavities are not air sealed with a solid air barrier, allowing outside air to flow between floors.
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Wrong - Foil air barrier was ripped to install wiring; foil should be replaced with a solid air barrier and wiring hole should be caulked.
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Wrong - Hole around electrical box is cut too large; gap needs to be air-sealed.
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Wrong - Plumbing penetrations are not sealed in sub-floor and it is not recommended to run plumbing in a cantilevered floor.
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Wrong - Rigid insulation blocking is installed but not air-sealed with spray foam around edges.
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Wrong - The faced batt insulation does not provide an air barrier in the joist bay between the garage and the conditioned space of the home.
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Wrong - This is a poorly sealed chase with no solid air barriers along the sides of the chase and no caulk around the electrical wires installed through the ceiling of the chase.
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Wrong - Tub or shower floor is not insulated and air-sealed with a solid barrier material between the floor joists and the tub. Plumbing pipes shouldn't be located in a cantilever.
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Wrong - Unsealed holes for pipes can leave gaps large enough for insects, rodents, and even birds to enter the home.
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Wrong - Wall cavities behind shower are not completely filled with insulation and are lacking the solid interior air barrier.
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Wrong - When ceiling joists over a garage run perpendicular to the adjoining wall, the joist bays must be blocked and sealed to prevent garage fumes from entering the living space
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Wrong – An opportunity to use structural members as a natural air barrier was missed in this home and blocking was not initially planned for between the garage and living space.