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This builder installs spray foam in exterior wall cavities where tubs and showers will be installed to air seal and insulate the exterior wall.

This builder installs spray foam in exterior wall cavities where tubs and showers will be installed to air seal and insulate the exterior wall.

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Unvented air-sealed crawlspace is insulated along the perimeter walls with rigid foam

Unvented air-sealed crawlspace is insulated along the perimeter walls with rigid foam

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Air sealing wall between a porch roof and attic with 1 inch of rigid insulation

Air sealing wall between a porch roof and attic with 1 inch of rigid insulation

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Installing ladder blocking at interior-exterior wall intersections rather than three solid studs in the exterior wall as the supporting surface allows room for insulation in the exterior wall.

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Right – Spray foam air seals and insulates the walls including the walls behind the fireplace and covers the underside of the roof deck of this mixed-dry climate home to provide an insulated attic space for HVAC ducts.

Right – Spray foam air seals and insulates the walls including the walls behind the fireplace and covers the underside of the roof deck of this mixed-dry climate home to provide an insulated attic space for HVAC ducts.

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Retrofit of cantilevered wall showing details at the inside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor

Retrofit of cantilevered wall showing details at the inside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor

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Right - Spray foam insulates and air-seals the stone walls of this unvented crawlspace.

Right - Spray foam insulates and air-seals the stone walls of this unvented crawlspace.

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Right – The insulation has been located to the exterior of the thermal mass in this wall section

Right – The insulation has been located to the exterior of the thermal mass in this wall section

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Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood- or metal-framed exterior walls.

Install continuous rigid foam insulation or insulated siding to help reduce thermal bridging through wood- or metal-framed exterior walls.

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The use of blown-in fiberglass insulation allows the double wall cavity to be filled in completely with no voids that could create cold spots in the walls.

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Right – Netted blown fiberglass insulation completely fills the wall cavities with no gaps or voids.

Right – Netted blown fiberglass insulation completely fills the wall cavities with no gaps or voids.

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These below-grade walls are insulated along the exterior with R-5 of bug-resistant high-density rigid fiberglass insulation installed over damproofing.

These below-grade walls are insulated along the exterior with R-5 of bug-resistant high-density rigid fiberglass insulation installed over damproofing.

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The energy-saving double wall construction uses two side-by-side stud walls, providing an extra-thick wall cavity that can be filled with more than twice as much insulation as a 2x6 wall.

The energy-saving double wall construction uses two side-by-side stud walls, providing an extra-thick wall cavity that can be filled with more than twice as much insulation as a 2x6 wall.

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Deep energy retrofit showing insulation sprayed on exterior of walls over existing siding

Deep energy retrofit showing insulation sprayed on exterior of walls over existing siding

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Dense-packed blown fiberglass insulation completely fills the wall cavities with no gaps or voids.

Dense-packed blown fiberglass insulation completely fills the wall cavities with no gaps or voids.

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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.

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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Right - This concrete basement wall is insulated on the interior basement walls with spray foam and under the slab with rigid foam; footing details are shown.

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Retrofit of cantilevered wall with beam showing details at the outside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor

Retrofit of cantilevered wall with beam showing details at the outside corner for installing air sealing and rigid foam insulation in the wall and overhanging floor

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Right - The wall top plates are sealed with foam before installing insulation on the ceiling deck

Right - The wall top plates are sealed with foam before installing insulation on the ceiling deck.

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Ladder blocking where interior and exterior walls intersect uses less wood and provides more room for insulation than stacking studs in the exterior wall to nail the interior wall to.

Ladder blocking where interior and exterior walls intersect uses less wood and provides more room for insulation than stacking studs in the exterior wall to nail the interior wall to.

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Masonry wall interior retrofit with fluid-applied water control layer and wood-framed wall with cavity insulation (climate zones 1-4 only)

Masonry wall interior retrofit with fluid-applied water control layer and wood-framed wall with cavity insulation (climate zones 1-4 only)

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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.

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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Right - The concrete basement wall is insulated on the interior with rigid foam; the footing detail is shown.

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Measure Guideline: Wall Air Sealing and Insulation Methods in Existing Homes - An Overview of Opportunity and Process

Reference

Document providing renovators and retrofit contractors an overview of considerations when including wall air sealing and insulation in an energy retrofit project.

Cladding Attachment Solutions for Exterior Insulated Commercial Walls, RDH Technical Bulletin No. 011

Reference

Article describing correct ways to attach rigid insulation to the exterior of commercial and residential buildings.

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

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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Impact Resistance of Advanced Framed Wall Systems with Insulating Sheathing as the Primary Sheathing, RR-0603

Reference

Research study describing the impact resistance performance of advanced framed wall systems with insulating sheathing as the primary sheathing from wind blown debris.

Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the inside of the rigid foam.

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Right - Poured concrete basement wall showing exterior insulation and sill detail; above-grade wall has sheathing to the outside of the rigid foam.

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Unfaced batt and blown fiberglass wall insulation are installed to RESENET Grade 1 standards with no gaps or voids.

Unfaced batt and blown fiberglass wall insulation are installed to RESENET Grade 1 standards with no gaps or voids.

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