Showing results 1 - 153 of 153
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Airflow within drop-in ceiling assemblies is generally not a concern due to the limited vertical height. However, airflow within air gaps in walls is a concern due to the much larger vertical height.
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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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A site-built rafter roof with a raised top plate allows for more insulation underneath.
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Advanced framing details include corners that are constructed with fewer studs or studs aligned so that insulation can be installed in the corner.
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Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.
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Air leaking through the home's envelope wastes a lot of energy and increases energy costs.
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All ceiling, wall, floor, and slab insulation shall achieve RESNET-defined Grade I installation
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Assembly can be used in IECC CZ 3 and above to thermally isolate garages in multifamily row houses with slab foundations. For unheated garages, it is unnecessary to insulate wall between garage and exterior of slab or slab underneath garage.
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Batt insulation should be cut to fit around wiring so that insulation can completely fill the wall cavity
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Blown cellulose insulation completely fills the netted wall and ceiling cavities.
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Ceiling, wall, floor, and slab insulation levels shall meet or exceed Builders Challenge levels
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Closed-cell spray foam insulation is added to the wall cavities of an existing exterior wall
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Design the roof with raised heel trusses to allow full insulation over the top plates of the exterior walls.
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Drop-in ceiling assemblies consisting of suspended ceiling tiles (common in multifamily buildings) are often insulated with fiberglass or mineral wool batt insulation.
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Expanded polystyrene insulation is installed with joints taped and lath attached in preparation for the application of stucco
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Exterior fiberglass insulation on this new home was (incorrectly) cut to terminate below-grade after backfill, which will expose the above-grade portions of the foundation wall to cold temperatures
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Exterior XPS basement insulation is correctly installed to completely cover the foundation wall
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Faced fiberglass batt insulation can be stapled to the stud faces or slightly inset, but avoid compressing the batts
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Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
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For slabs on grade in CZ 4 and higher, 100% of slab edge insulated to ≥ R-5 at the depth specified by the 2009 IECC and aligned with thermal boundary of the walls
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Heated or partially heated garages with podium decks should be thermally isolated from both ambient exterior space and interior conditioned space by insulating the interior of the garage walls and ceiling and extending the insulation below grade.
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Heated recirculation plenum spaces can be installed in parking garages in cold climates to prevent pipes from freezing and warm the floor of occupied space directly above the garage.
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In cathedral ceilings, parallel chord trusses allow thicker insulation levels over the exterior wall top plates.
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Infrared thermography during depressurization testing reveals air leakage at corner of spray foam-insulated room where wood-to-wood seams in framing were not air sealed
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Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood- or metal-framed exterior walls.
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Install insulation under platforms constructed in the attic for storage or equipment.
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Install wood framing cross pieces in the attic rafter bays on each side of the duct chase
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Install wood framing cross pieces in the attic rafter bays on each side of the duct chase
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Insulating both exterior and garage-side faces of plaza deck can reduce thermal bridging. If garage is heated or partially heated, hybrid spray foam/batt insulation on garage side of plaza deck should extend to the perimeter of the garage.
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Insulating the exterior and garage-side faces of the garage plaza deck can reduce thermal bridging. If the garage is heated or partially heated, the spray foam on the garage side of the plaza deck should extend to perimeter of garage.
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Insulating the exterior and garage-side faces of the plaza deck can reduce thermal bridging. If the garage is heated or partially heated, the faced batt insulation on the garage side of the plaza deck should extend to perimeter of garage.
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Lay out the rigid foam sheathing joints so they do not align with the window and door edges
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Limited attic access can make inspections for missing air barriers and insulation challenging
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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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Proper flashing around windows is especially important when the rigid foam serves as the drainage plane in the wall
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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 - Continuous wall sheathing and blocking has been installed to brace the raised heel trusses.
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Right - Fiberglass/mineral wool insulation thermally isolates the garage from the interior occupied space above.
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Right - Furring strips were installed with blocking to allow adequate room for 4 inches of mineral wool.
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Right - Mineral Wool insulation is installed on the exterior of wall with furring strips.
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Right - New flashing has been installed to complete the air and water control layers at the window openings of this wall retrofit that includes insulating the wall cavities with spray foam
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Right - Rigid foam slab edge insulation is installed along the exterior edge of a monolithic slab foundation.
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Right - This heated garage plenum is insulated along the bottom of the plenum space.
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Right - This heated garage plenum is insulated and has an opening to access the interior, allowing for repairs and maintenance.
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Right – Attic access hatch has been properly insulated by attaching a fiberglass batt, gasketed, and opening has blocking
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Right – All insulated sheathing boards are installed according to the manufacturer’s recommended fastening schedule and taping specifications
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Right – Attic access door has foam and rubber weatherstripping installed that remains in contact when closed.
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Right – Blocking has been installed around the perimeter of this attic access to prevent insulation falling into the house
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Right – Full length 2x6 nailer has been installed to allow space for insulation at wall intersection
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Right – Insulation installed to correct depth and will be aligned with air barrier
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Right – Structural insulated sheathing can provide racking strength (lateral load resistance), and serve as an air barrier and thermal barrier if installed according to manufacturer’s specifications with taped, sealed seams
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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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Right: All joints in the rigid foam are taped to keep stucco out of joints for even drying. Mesh tape (shown here) is used with expanded polystyrene (EPS); acrylic sheathing tape or self-adhered membrane is used with XPS
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Rigid foam forms an insulating bond break between the foundation wall and the slab
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Rigid foam insulated sheathing placed exterior to house wrap, interior to house wrap, or take the place of the house wrap
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Rigid insulation and air-sealing can be used to thermally isolate garages from interior occupied space in multifamily row houses/townhouses.
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Rigid insulation can be used as a thermal break between a garage slab with a heated plenum space and a separately cast garage slab without a heated plenum space.
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Siding has been removed so cellulose insulation can be dense-packed into the exterior walls of this home
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Single framed wall converted to double wall and insulated with closed-cell spray foam
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Single framed wall converted to double wall and insulated with open-cell spray foam
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Spray foam insulation is installed in open wall cavities to air seal and insulate
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Standard roof trusses are narrow at the eaves, preventing full insulation coverage over the top plate of the exterior walls
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Stucco is installed over rigid insulation, which is installed over a drainage plane consisting of a drainage gap and building wrap layer over the sheathing
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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 soffit dam and baffle allow air to flow through the vents without disturbing the insulation covering the top plates
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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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Thermally isolate heated garages in multifamily buildings from ambient space, and thermally isolate all garages in multifamily buildings from interior occupied space. This parking garage is thermally isolated from space above with spray foam insulation.
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This assembly can be used to thermally isolate heated or partially heated garages with slab foundations from the exterior in multifamily row houses/townhouses in IECC Climate Zones 3 and higher.
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This assembly for above-grade and below-grade garage walls in any climate zone uses continuous rigid insulation along the interior of the wall.
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This assembly for above-grade or below-grade garage walls in any climate zone uses a hybrid of continuous rigid insulation and cavity insulation on the interior side of the wall.
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This heated garage plenum is insulated along the bottom and sides, and the insulation is fully aligned with an air barrier. The insulation at the bottom of the plenum space meets IECC insulation requirements.
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This heated garage plenum space is insulated along its top, bottom and sides, and the insulation at the top of the plenum meets IECC requirements. The insulation along the top and sides is fully aligned with an air barrier.
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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 wall assembly for above-grade garage walls uses cavity insulation and should only be used in IECC Climate Zones 4 or lower due to the risk of condensation on the interior surface of the concrete wall.
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Two layers of XPS are installed with staggered seams over a liquid-applied membrane on the structural sheathing
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Unfaced fiberglass batt insulation is installed to completely fill the wall cavities and is sliced to fit around wiring, piping, and other obstructions in the wall cavities
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Use flashing tape to seal around any pipes or vents that penetrate through the foam
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Wrong – A visible gap in the insulated sheathing introduces unwanted outside air, creating a thermal bypass and encouraging convective air flow
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Wrong – Compression and misalignment because insulation is not split around plumbing
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Wrong – Compression and misalignment because insulation is not split around wires
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Wrong – Conventional T-post detail is extremely difficult to insulate and usually doesn't happen
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Wrong – Either this tape was not pressed down firmly or the surface was wet or dirty so the tape is not sticking properly even during construction.
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Wrong – If the insulated sheathing will serve as an air barrier and drainage plane, any cuts and seams must be taped or sealed.
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Wrong – No blocking installed to prevent attic insulation from falling into stairs and opening
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Wrong – The backing on this knee wall was not air sealed prior to adding insulation.
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Wrong – The batt insulation on this knee wall is not properly supported and there is no air sealed rigid backing to provide a solid air barrier.
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Wrong – The framing and wind baffle installation will not allow for required insulation depth.
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Wrong – When insulated sheathing is installed correctly, you should not see daylight. Nail holes were also left unplugged.