Showing results 1 - 100 of 119
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A site-built rafter roof with a raised top plate allows for more insulation underneath.
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After all holes through the ceiling are air-sealed and the baffles have been installed, then the insulation can be installed.
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Baffles provide an air space over the insulation to guide ventilation air from the soffit vents up along the underside of the roof deck
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Because all of the structural load is carried by the SIP roof and wall panels, no trusses are needed, allowing the home to have vaulted ceilings and open interiors throughout.
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Buried ducts are laid on the floor of a vented attic then covered with spray foam and blown attic floor insulation
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Ceiling fan meets minimum clearance
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Ceiling fans can be used to aid a night flush strategy by helping to cool down wall and floor surfaces more thoroughly at night, and by providing comfort ventilation during the day
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Ceiling joists extend out to provide very strong roof overhangs that will resist uplift pressures in high winds.
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Closed-cell spray foam insulation covers the attic floor to provide a continuous air control layer.
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Cross section showing points of reinforcement and attachment to secure the chimney to the roof and ceiling joists.
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Cut a neat hole in the ceiling with smooth edges in which the exhaust fan housing will fit snugly
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Cut-away view showing unsealed gaps around a heating duct that goes through a wall
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Dropped hallway ceiling duct chase with drywalled soffit
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Dropped hallway ceiling with drywall
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Failure in attic insulation effectiveness caused by wind washing pushing insulation away from the edges of the attic space.
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Finished raised ceiling duct chase
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Flat roof with cavity spray foam plus loose-fill insulation and gypsum board thermal barrier.
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Floor cavity air pressure is measured by placing a tube into the floor cavity through a small drilled hole
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Floor cavity pressure is measured by inserting a tube into the floor cavity using an extension pole
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Infrared imaging shows cold conditioned air pouring out of the open floor cavities under this attic kneewall into the hot unconditioned attic
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Install a continuous air barrier below or above ceiling insulation and install wind baffles.
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Install a sealed enclosure over a non-IC rated recessed light fixture to air-seal the can and to prevent insulation from touching the recessed can light.
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Install duct supports in line with ceiling trusses
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Installing air barrier above a soffit
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Installing an ENERGY STAR ceiling fan is a low-energy way to improve comfort in a designated cool room
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Key connection points for a continuous load path for earthquake and high wind disaster resistance
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Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.
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Radiant barrier sheeting can be stapled to the underside of the rafters or along the inside edge of the rafters
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Raised ceiling duct chase installation technique
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Raised ceiling duct chase is not visible as finished product
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Raised heel energy trusses extend past the exterior wall and are deeper at the wall allowing room for full insulation coverage over the top plate of the exterior walls.
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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 - a dropped ceiling below a taped plywood air barrier provides a service cavity for ducts and wiring.
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Right - Air barrier is present between the dropped ceiling/soffit and the attic.
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Right - Air barrier is present between the dropped ceiling/soffit and the attic.
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Right - The HVAC ducts are located in conditioned space in a dropped hallway ceiling with very short duct runs for more efficient delivery.
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Right - Wind baffle installation will allow proper insulation depth over the top plate.
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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 – Joists between floors are air sealed to the ceiling drywall with canned spray foam along each joist-to-drywall-seam.
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Right – Spray foam insulates the walls and ceilings separating the garage from the home.
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Right – The ductless minisplit in this open area is installed in the ceiling rather than on a wall.
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Right – The insulating enclosure over this non-IC rated recessed light fixture is centered and air sealed
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Right – The top of the enclosure over this recessed can light remains clear of attic insulation
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Right – This home’s roof and walls are constructed of SIP panels; metal studs provide fastening surfaces across the long expanses of ceiling in the open interiors.
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Right – This roof consists of parallel truss chords which allows for cathedral ceilings.
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Right – Wind baffle installation maintains necessary code clearance between baffle and roof deck
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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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Rigid foam insulating sheathing installed over an existing garage ceiling with retrofits to air seal exterior wall before adding exterior wall insulating sheathing
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Rigid foam insulating sheathing is installed on existing garage ceiling and covered with a new gypsum board fire protection layer installed over the foam.
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Roof decking has adhered radiant barrier that is perforated, in addition to the nail holes
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Sloped roof with cavity spray foam insulation sprayed on underside of roof deck and covered with sprayed-on thermal or ignition barrier coating.
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Spray foam insulates and air-seals the ceiling deck and top plates of this vented attic.
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Spray foam insulates the top plates and air seals them to the ventilation baffles before ceiling drywall is installed.
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Spray foam insulation air-seals and insulates the floor above the garage; the joist will be filled with fibrous insulation in this flash-and-batt approach.
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Spray foam insulation used for raised ceiling duct chase
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Spray foam insulation used for raised ceiling duct chase.
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Standard 2 in. by 4 in. stud secures duct chase - made of rigid insulation in this example
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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 batt insulation shown here was properly installed to fill the ceiling cavities.
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The builder installed this OSB under the roof rafters and air sealed the seams with tape then added a dropped drywall ceiling to provide a service cavity for ducts and wiring, while minimizing holes into the attic.
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The drywall above the chase extends beyond adjoining top plates for a continuous air barrier
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The drywall above the dropped ceiling duct chase extends beyond adjoining top plates for a continuous air barrier
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The floor cavities under this attic kneewall are completely open to the unconditioned attic space and a prime target for wind washing
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The original corner seam is air-sealed with caulk, then rigid foam is installed on the existing garage ceiling and walls, and finally covered with drywall.
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The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.
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The seams in the ceiling drywall are sealed from the attic side with spray foam.
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The soffit dam and baffle allow air to flow through the vents without disturbing the insulation covering the top plates
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The unvented attic is insulated along the underside of the roof deck with 7 inches (R-49) of closed-cell spray foam, providing vaulted ceilings and a conditioned knee wall space for ducting.
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The walls and ceilings of this post-and-beam home are filled with netted blown fiberglass.
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There are three potential locations for an attic radiant barrier – adhered to the underside of the roof decking, hanging from the rafters, or on the ceiling insulation
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This builder applied an air-sealing layer of spray foam along the underside of the roof deck and the inside of the walls before filling the wall cavities with blown cellulose.
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This finished retrofit installation of radiant barrier in attic shows the air spaces at the soffit and ridge to promote attic ventilation
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This kneewall has no top plate and the resulting gap provides a wide-open pathway for air and vapor to travel between the living space and the attic
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This typical dropped ceiling hallway chase shows a complicated air sealing scheme where chase ceiling drywall meets sidewall top plates
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This vaulted ceiling has 7 inches of closed-cell spray foam plus an R-22 unfaced mineral wool batt for a total attic insulation value of R-68.
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Three inches of closed-cell spray foam (R-19) and 7.5 inches (R-28) of open-cell spray foam was installed below the roof sheathing in this cathedral ceiling.
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Three locations and methods for installing a roof deck radiant barrier in new construction
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Top view showing how the chimney is attached to at least four ceiling joists running parallel to the exterior wall.
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Top view showing how the chimney is attached to ceiling joists that run perpendicular to the exterior wall.
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Wrong - Batt insulation does not provide complete coverage across the attic floor so ceiling joists are exposed resulting in thermal bridging.
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