BASC Search

Interior details of an insulated closed crawlspace

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Air sealing at double walls

CAD File

Wrong - Dark pattern on wall is showing where warm air is leaking into the wall cavity from interior of home.

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Continuous Rigid Insulation Sheathing/Siding (2)

Video

Video describing how to properly install continuous rigid insulation sheathing and siding.

Roof/Attic to Exterior Wall Air Control Upgrade

Guide

Guide describing how to retrofit an exterior wall and/or attic to provide continuous air sealing.

Air Sealing Structural Insulated Panel (SIP) Seams

Guide

Guide describing how to correctly seal structural insulated panel (SIP) seams.

Flashing of Wall Penetrations in Existing Homes

Guide

Guide describing how to install flashing that is integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit.

Rigid Foam Board Insulation for Band Joists (1)

Video

Video describing how to properly insulate band joists in crawlspaces.

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

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Expert Meeting Report: Cladding Attachment Over Exterior Insulation

Reference

Report about an expert meeting focused on issues surrounding cladding attachment and performance of walls with exterior insulating sheathing.

Exterior Walls (Air Sealing Sheathing)

Video

Video showing a technique for airtight sheathing installation on exterior walls using foam gasket strips.

Air sealing behind tub with cavity rigid insulation

CAD File

This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated irregular foundation wall

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This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated flat foundation wall

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Moisture Research - Optimizing Wall Assemblies

Reference

Report describing evaluation of several configurations of wall assemblies to determine the accuracy of moisture modeling and make recommendations to ensure durable, efficient assemblies.

IECC Climate Zone 1A: Unvented Attic with Spray foam at Roof Deck, 2x6 Wall-CMU Wall, Elevated Slab

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Unvented Attic Insulation

Guide

Guide describing methods for insulating an unvented attic along the roof line.

IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall/CMU Wall, Elevated Slab

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IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall/CMU Wall, Elevated Slab

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Builders Guide to Structural Insulated Panels (SIPs) for all Climates

Reference

A book about structurally insulated panels.

Pumpkin Ridge Passive House video #006: Insulation Details

Video

Video describing the EPS foam used to insulate the exterior of a passive house.

2021 IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall-CMU Wall, Elevated Slab

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Moisture Management for High R-Value Walls

Reference

Report explaining moisture-related concerns for high R-value wall assemblies and discusses past Building America research work that informs this study.

Air Sealing, Insulating, and Venting Attics and Roofs to Reduce Heat Gain

Information Guide

Information guide providing links to guides describing specific ways to air-seal, insulate, and ventilate attics and roofs to minimize heat gain in new and existing homes.

Spray Foam Upper Walls Adjoining Unconditioned Attics

Video

Video describing how to insulate skylight shafts and knee walls correctly.

Retrofit of cantilevered foundation wall showing details at the inside corner for installing closed-cell spray foam in the wall and overhanging floor

Image

Interior details of an insulated closed crawlspace

Air sealing at double walls

Wrong - Dark pattern on wall is showing where warm air is leaking into the wall cavity from interior of home.

Continuous Rigid Insulation Sheathing/Siding (2)

Roof/Attic to Exterior Wall Air Control Upgrade

Air Sealing Structural Insulated Panel (SIP) Seams

Flashing of Wall Penetrations in Existing Homes

Rigid Foam Board Insulation for Band Joists (1)

The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation

Expert Meeting Report: Cladding Attachment Over Exterior Insulation

Exterior Walls (Air Sealing Sheathing)

Air sealing behind tub with cavity rigid insulation

This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated irregular foundation wall

This exterior wall retrofit permits drying to the exterior of a sill plate installed on an untreated flat foundation wall

Moisture Research - Optimizing Wall Assemblies

IECC Climate Zone 1A: Unvented Attic with Spray foam at Roof Deck, 2x6 Wall-CMU Wall, Elevated Slab

Unvented Attic Insulation

IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall/CMU Wall, Elevated Slab

IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall/CMU Wall, Elevated Slab

Builders Guide to Structural Insulated Panels (SIPs) for all Climates

Pumpkin Ridge Passive House video #006: Insulation Details

2021 IECC Climate Zone 2A: Unvented Attic with Spray Foam at Roof Deck, 2x6 Wall-CMU Wall, Elevated Slab

Moisture Management for High R-Value Walls

Air Sealing, Insulating, and Venting Attics and Roofs to Reduce Heat Gain

Spray Foam Upper Walls Adjoining Unconditioned Attics

Retrofit of cantilevered foundation wall showing details at the inside corner for installing closed-cell spray foam in the wall and overhanging floor

Install Top Plates or Blocking at the Top of Walls Adjoining Unconditioned Spaces

Typical R-values and Vapor Retarder Classifications for Common Insulation Materials

Interior Walls (Air Sealing Top and Bottom Plates)

Foundation wall interior polyisocyanurate, foil-faced, exposed