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Right - Spray foam insulation air-seals the ceiling-to-drywall seams at the wall top plate.

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Plan view (from above) showing how the existing garage wall gypsum board is cut away to air-seal the shared wall before adding rigid foam insulation on the garage and exterior walls of the home.

Plan view (from above) showing how the existing garage wall gypsum board is cut away to air-seal the shared wall before adding rigid foam insulation on the garage and exterior walls of the home.

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Right - Spray foam insulation has been sprayed onto the underside of the sloped roof and the gable end wall to provide a sealed, insulated attic for housing the HVAC ducts

Right - Spray foam insulation has been sprayed onto the underside of the sloped roof and the gable end wall to provide a sealed, insulated attic for housing the HVAC ducts

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Side view showing how the existing garage wall and ceiling are air-sealed prior to installing rigid foam insulation on the garage side of the shared wall of an existing home.

Side view showing how the existing garage wall and ceiling are air-sealed prior to installing rigid foam insulation on the garage side of the shared wall of an existing home.

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If HVAC duct must be installed in an exterior wall, separate it from the exterior with at least R-6 of continuous rigid insulation

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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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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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Ledger board, metal brackets, and vertical 2x4s have been installed in preparation for exterior spray foam in this retrofit exterior wall insulation technique

Ledger board, metal brackets, and vertical 2x4s have been installed in preparation for exterior spray foam in this retrofit exterior wall insulation technique

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Insulation was added to the walls and ceiling of this existing home from the inside as part of an extensive retrofit to avoid replacing original 1-inch shiplapped sheathing.

Insulation was added to the walls and ceiling of this existing home from the inside as part of an extensive retrofit to avoid replacing original 1-inch shiplapped sheathing.

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HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity

HVAC ducts, cavities used as ducts, and combustion inlets and outlets may pass perpendicularly through exterior walls but shall not be run within exterior walls unless at least R-6 continuous insulation is provided on exterior side of the cavity

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Spray foam insulation extends down the foundation wall to the slab, which has been retrofitted by cutting the slab to install drainage mat against the wall and a new perimeter footing drain, along with rigid foam plastic above the slab.

Spray foam insulation extends down the foundation wall to the slab, which has been retrofitted by cutting the slab to install drainage mat against the wall and a new perimeter footing drain, along with rigid foam plastic above the slab.

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Spray foam extends down the foundation wall to the slab, which has been retrofitted by adding dimple plastic drainage mat and rigid foam insulation.

Spray foam extends down the foundation wall to the slab, which has been retrofitted by adding dimple plastic drainage mat and rigid foam insulation.

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Side view showing air-sealing and rigid foam insulation is installed over existing wall and ceiling under a room above, then covered with new gypsum board.

Side view showing air-sealing and rigid foam insulation is installed over existing wall and ceiling under a room above, then covered with new gypsum board.

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Right - XPS foam insulation is attached to the existing exterior wall with wood furring strips that serve as a nail base for the siding and are installed vertically to allow for drainage and drying behind the siding

Right - XPS foam insulation is attached to the existing exterior wall with wood furring strips that serve as a nail base for the siding and are installed vertically to allow for drainage and drying behind the siding

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Right – The walls of this home were constructed with “insulated studs” fashioned on site by adding 2-inch-thick strips of rigid foam to the inside face of 2x4 studs then topping that with a plywood nailing surface. The rigid foam provides a thermal break for each stud and provides more room for blown in insulation.

Right – The walls of this home were constructed with “insulated studs” fashioned on site by adding 2-inch-thick strips of rigid foam to the inside face of 2x4 studs then topping that with a plywood nailing surface.

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What is Continuous Insulation — A Guide for Insulators and Contractors

Video

Video from IDI Distributers on how to comply with code and properly install continuous insulation, including taping seams and cutting properly.

Insulated Siding as Home Insulation: Guide for Users and Energy Raters

Reference

A guide for users and energy raters of insulated siding as home insulation.

Attic Knee Walls

Video

Video describing how to insulate and air seal attic knee walls.

Insulation Installation Achieves RESNET Grade 1

Guide

Guide describing RESNET Grade 1-level installation of insulation in walls, attics, and floors.

Walls Behind Showers and Tubs (1)

Video

Video describing how to properly insulate walls behind showers and tubs.

Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly

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Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly

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Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly

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Wrong - Batt insulation installed backward

Wrong - Batt insulation installed backward

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Walls Behind Showers and Tubs (3)

Video

Video describing how to properly insulate walls behind showers and tubs.

Continuous Rigid Insulation Sheathing/Siding (1)

Video

Video describing exterior rigid foam insulation.

Insulation Installation (RESNET Grade 1) - Part 1

Video

Video describing how to properly install the OPTIMA insulation system.

No insulation installed in cavity and not air sealed

No insulation installed in cavity and not air sealed

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Insulated Concrete Forms - Installation Training Video

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Video from ICFbuildings on how to design and install ICF on an entire home.

Exterior Insulation Implications on Heating and Cooling in Cold Climates

Reference

The New York State Energy Research and Development Authority (NYSERDA) is interested in finding cost-effective solutions for deep energy retrofits (DERs) related to exterior wall insulation in a cold climate, with targets of 50% peak load reduction and 50% space conditioning energy savings.

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