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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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The Perfect Wall includes water, air, thermal, and vapor layers with continuous insulation exterior of the sheathing to reduce the condensation potential in the wall.

The Perfect Wall includes water, air, thermal, and vapor layers with continuous insulation exterior of the sheathing to reduce the condensation potential in the wall.

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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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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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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 rim joists above the pre-insulated basement walls are sealed and insulated with spray foam to prevent air leakage at this juncture in the building envelope.

Right – The rim joists above the pre-insulated basement walls are sealed and insulated with spray foam to prevent air leakage at this juncture in the building envelope.

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Headers over windows on non-load-bearing walls are open to allow room for insulation.

Headers over windows on non-load-bearing walls are open to allow room for insulation.

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Right - Walls and ceilings shared by the garage and living space must be air sealed and insulated.

Right - Walls and ceilings shared by the garage and living space must be air sealed and insulated.

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

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2021 IECC Climate Zone 6A: Vented Attic, 2x4 Wall, Interior Insulated Basement

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2021 IECC Climate Zone 6B: Vented Attic, 2x4 Wall, Interior Insulated Basement

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2021 IECC Climate Zone 5A: Vented Attic, 2x4 Wall, Interior Insulated Basement

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2021 IECC Climate Zone 5C: Vented Attic, 2x4 Wall, Interior Insulated Basement

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2021 IECC Climate Zone 5B: Vented Attic, 2x4 Wall, Interior Insulated Basement

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2021 IECC Climate Zones 7 and 8: Vented Attic, 2x4 Wall, Interior Insulated Basement

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Right – Walls, windows, and wiring are installed in the factory for these modular homes, which are installed at the site on basement foundations made of insulated concrete wall panels.

Right – Walls, windows, and wiring are installed in the factory for these modular homes, which are installed at the site on basement foundations made of insulated concrete wall panels.

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Externally insulated post-tensioned concrete slab-on-grade foundation wall with a turn-down footing showing anchorage of the wall to the foundation for seismic resistance

Externally insulated post-tensioned concrete slab-on-grade foundation wall with a turn-down footing showing anchorage of the wall to the foundation for seismic resistance

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Externally insulated post-tensioned concrete slab-on-grade foundation wall with a turn-down footing showing anchorage of the wall to the foundation for seismic resistance

Externally insulated post-tensioned concrete slab-on-grade foundation wall with a turn-down footing showing anchorage of the wall to the foundation for seismic resistance

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In multistory insulating concrete form (ICF) buildings, the concrete floor slabs are integrated into the ICF exterior walls and structurally supported by the reinforced concrete wall cores

In multistory insulating concrete form (ICF) buildings, the concrete floor slabs are integrated into the ICF exterior walls and structurally supported by the reinforced concrete wall cores

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Construction Guide - Next Generation High Performance Walls in Climate Zones 3-5, Part II: 2x4 Walls with 1” - 1.5” Exterior Insulative Sheathing

Reference

The Guide addresses walls constructed with 2x4 wood frame studs, wood structural panel (WSP) sheathing as wall bracing and added backing for foam sheathing, a layer of rigid foam sheathing insulation up to 1.5 in. thick over the WSP, and a cladding system installed over the foam sheathing in low...

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement

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