BASC Search | Building America Solution Center

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.

Image

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.

Image

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.

Image

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.

Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.

Advanced framing details include framing aligned to allow for insulation at interior-exterior wall intersections.

Image

Technology Solutions Case Study: Retrofit Measures for Embedded Wood Members in Insulated Mass Masonry Walls

Case Study

Case study describing retrofit measures for embedded wood members in insulated mass masonry walls.

This home’s double-wall structure consists of two 2x4 walls set two inches apart, then sheathed on the exterior and netted on the interior to create a 9.5-inch wall cavity that is filled with blown fiberglass insulation.

This home’s double-wall structure consists of two 2x4 walls set two inches apart, then sheathed on the exterior and netted on the interior to create a 9.5-inch wall cavity that is filled with blown fiberglass insulation.

Image

ICFs provide continuous wall insulation from the roof to the footing with very little thermal bridging

ICFs provide continuous wall insulation from the roof to the footing with very little thermal bridging

Image

Right – Rigid air barrier installed between double-wall assembly. Inside cavity will be insulated

Right – Rigid air barrier installed between double-wall assembly. Inside cavity will be insulated

Image

Example of the advanced framing technique, double-stud wall cavity, which will later be filled with blown insulation

Example of the advanced framing technique, double-stud wall cavity, which will later be filled with blown insulation

Image

The exterior walls are double walls consisting of two 2x4 stud walls set 3 inches apart to form a 10-inch-thick wall cavity that is filled with blown-in fiberglass to provide a continuous R-40 blanket of insulation around the home.

Image

Right – Full length 2x6 nailer has been installed to allow space for insulation at wall intersection

Right – Full length 2x6 nailer has been installed to allow space for insulation at wall intersection

Image

The 2x4 wall studs are staggered along the 2x6 sill plate providing space to weave insulation around each stud to stop thermal bridging through the wall.

The 2x4 wall studs are staggered along the 2x6 sill plate providing space to weave insulation around each stud to stop thermal bridging through the wall.

Image

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

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

Image

Wrong – Insulation does not fill entire cavity nor is there an air barrier present between the double wall

Wrong – Insulation does not fill entire cavity nor is there an air barrier present between the double wall

Image

Right – This home is framed with double walls – two 2x4 walls set next to each other then sheathed with OSB on the exterior and netted on the interior face to create an extra-deep wall cavity that can be filled with blown-in insulation.

Right – This home is framed with double walls – two 2x4 walls set next to each other then sheathed with OSB on the exterior and netted on the interior face to create an extra-deep wall cavity that can be filled with blown-in insulation.

Image

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.

Image

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

Image

Brick veneer framed wall supported by a concrete slab-on-grade foundation with a turn-down footing insulated on its top surface, showing anchorage of the wall to the foundation for seismic resistance

Brick veneer framed wall supported by a concrete slab-on-grade foundation with a turn-down footing insulated on its top surface, showing anchorage of the wall to the foundation for seismic resistance

Image

Advanced framing techniques including 2x6 walls spaced at 24 inches on center and ladder blocking at wall intersections allow more space for insulation in the wall cavities while open-web floor joists provide space between floors for ducting.

Advanced framing techniques including 2x6 walls spaced at 24 inches on center and ladder blocking at wall intersections allow more space for insulation in the wall cavities while open-web floor joists provide space between floors for ducting.

Image

The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.

The rim joists and top plates are air sealed and insulated with open-cell spray foam while the walls are filled with blown fiberglass.

Image

The highly efficient double wall system consists of two sets of stud walls set side by side to create a 12-inch-thick double-stud wall cavity that is filled with a continuous blanket of R-44 dense-packed cellulose insulation.

The highly efficient double wall system consists of two sets of stud walls set side by side to create a 12-inch-thick double-stud wall cavity that is filled with a continuous blanket of R-44 dense-packed cellulose insulation.

Image

This home is framed with post-and-beam construction and 7-inch wall cavities that will be filled with blown-in fiberglass insulation.

Image

Right – This three studs in this corner are positioned to allow insulation against more of the exterior wall than standard three-stud corners.

Right – This three studs in this corner are positioned to allow insulation against more of the exterior wall than standard three-stud corners.

Image

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

Image

Advanced framing details include open headers and reduced framing around windows and two-stud corners to allow more room for insulation in the wall cavities while reducing lumber costs.

Advanced framing details include open headers and reduced framing around windows and two-stud corners to allow more room for insulation in the wall cavities while reducing lumber costs.

Image

Each floor of this two-story modular home is constructed in a factory, including the 2x6, 24-inch on-center walls, R-21 fiberglass batt cavity insulation, and rigid exterior foam, housewrap, windows, and trim, then connected on site.

Each floor of this two-story modular home is constructed in a factory, including the 2x6, 24-inch on-center walls, R-21 fiberglass batt cavity insulation, and rigid exterior foam, housewrap, windows, and trim, then connected on site.

Image

Manufactured insulated header

Manufactured insulated header

CAD File

Advanced Framing: Insulated Headers

Guide

Guide describing how to insulate headers over doors and windows to reduce heat loss and heat gain through solid wood framing.

Guide to Insulating Sheathing

Reference

Guide providing information on using exterior foam insulating sheathing in building wall assemblies to enhance thermal performance.

First
Previous
1
2
3
…
Next
Last