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2021 IECC Climate Zone 5A: Vented Attic, Exterior Double Wall, Interior Insulated Basement

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2021 IECC Climate Zone 5A: Vented Attic, Interior Double Wall, Interior Insulated Basement

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2021 IECC Climate Zone 5B: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

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2021 IECC Climate Zone 6B: Vented Attic, Exterior Double Wall, Interior Insulated Basement

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2021 IECC Climate Zones 7 and 8: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

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Wrong - Wall cavities behind shower are not completely filled with insulation and are lacking the solid interior air barrier.

Wrong - Wall cavities behind shower are not completely filled with insulation and are lacking the solid interior air barrier.

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Right – Blocking has been installed around the perimeter of this attic access to prevent insulation falling into the house

Right – Blocking has been installed around the perimeter of this attic access to prevent insulation falling into the house

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Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 1/2-Story Homes in Cold Climates

Reference

Report exploring alternative methods to find long-term solutions to energy loss in 1 ½-story homes to save energy, improve comfort, prevent frost buildup on the underside of the roof deck, and reduce the risk of ice dam formation/reformation.

Taped plywood creates a continuous sheathing layer while cork adds a layer of continuous insulation to the outside of the wall.

Taped plywood creates a continuous sheathing layer while cork adds a layer of continuous insulation to the outside of the wall.

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Spray foam insulates the top plates and air seals them to the ventilation baffles before ceiling drywall is installed.

Spray foam insulates the top plates and air seals them to the ventilation baffles before ceiling drywall is installed.

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These baffles have a wind dam at the back which drops down into the rafter bay to serve as a backstop for insulation

These baffles have a wind dam at the back which drops down into the rafter bay to serve as a backstop for insulation

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2021 IECC Climate Zone 4C: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 4C: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

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2021 IECC Climate Zone 6A:Vented Attic, Interior Double Wall, Interior Insulated Basement

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Right-Wall-insulating sheathing is extended up to roof rafters and sealed around the framing with spray foam

Right-Wall-insulating sheathing is extended up to roof rafters and sealed around the framing with spray foam

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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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Install an ENERGY STAR labeled insulated door with an automatic closer. Weather strip the door frame

Install an ENERGY STAR labeled insulated door with an automatic closer. Weather strip the door frame

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Building America Existing Home Case Study: Insulated Siding Retrofit in a Cold Climate, New Paltz, New York

Case Study

Case study describing the application of insulated siding on an existing home.

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

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The ceiling over an unconditioned space is insulated with closed-cell spray foam that fills the ceiling cavities and encapsulates the framing

The ceiling over an unconditioned space is insulated with closed-cell spray foam that fills the ceiling cavities and encapsulates the framing

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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.

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 - Spray foam fills the walls and rim joists to air seal and insulate while caulk seals the framing joints.

Right - Spray foam fills the walls and rim joists to air seal and insulate while caulk seals the framing joints.

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Insulating sheathing is extended up to the roof rafters and sealed around the framing with spray foam as part of this exterior wall retrofit

Insulating sheathing is extended up to the roof rafters and sealed around the framing with spray foam as part of this exterior wall retrofit

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2021 IECC Climate Zone 6: Vented Cathedral ceiling, 2x6 Wall, interior Insulated Basement (with notes)

2021 IECC Climate Zone 6: Vented Cathedral ceiling, 2x6 Wall, interior Insulated Basement (with notes)

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2021 IECC Climate Zone 7 and 8: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 7 and 8: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement (with notes)

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2021 IECC Climate Zone 4C: Vented Attic, Exterior Double Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 4C: Vented Attic, Exterior Double Wall, Interior Insulated Basement (with notes)

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Right – Attic access hatch has been properly insulated by attaching a fiberglass batt, gasketed, and opening has blocking

Right – Attic access hatch has been properly insulated by attaching a fiberglass batt, gasketed, and opening has blocking

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Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home

Adding air-sealing and rigid foam insulation at the wall-to-overhanging floor juncture at the outside corner of an existing home

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Vented roof assembly at rake retrofitted with spray foam and additional insulation installed at the attic floor and extended to the rake edge

Vented roof assembly at rake retrofitted with spray foam and additional insulation installed at the attic floor and extended to the rake edge

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All seams between structural insulated panels (SIPs) foamed and/or taped per manufacturer's instructions

All seams between structural insulated panels (SIPs) foamed and/or taped per manufacturer's instructions

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Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1-1/2 Story Homes in Cold Climates, Minneapolis, MN

Reference

This case study describes costs associated with the External Thermal and Moisture Management System developed by the NorthernSTAR Building America Partnership for retrofitting roofs with rigid foam over the roof deck, especially on one and a half-story homes.

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