Adding continuous insulation to a building increases the effective R-value of the building much more than adding a similar amount of non-continuous insulation (such as in stud cavities). This creates results you can feel, and see.
Tools & Education
Contains resources on using continuous insulation for compliance with the building codes and energy codes.
Research report covering the use of foam sheathing when used as exterior wall sheathing or in exterior walls in Type I, II, III, and IV construction as defined by the IBC. Available as a sealed code compliance report.
Research report covering the use of foam sheathing when used as exterior wall sheathing or in exterior walls in Type V construction as defined by the IBC. Available as a sealed code compliance report.
Code-compliant details for the use of foam sheathing as thermal insulation in light frame construction. Available as a sealed code compliance report.
Details and information on the use of CI to avoid thermal bridges
This presentation, given by Jay Crandell (ARES Consulting) and Amy Schmidt (Dow Building and Construction) at the 2018 RESNET Building Performance Conference covers topics in energy code compliance, such as calculating the R-value of a hybrid wall and determining air space performance contributions.
Four typical methods for window framing are covered here. The installation approaches shown all include windows with integral mounting flanges, and all use taped foam sheathing as the water resistive barrier.
Guidance for the use of thick foam (>1-1/2") in wood frame buildings
A comprehensive assessment of the state-of-the-art of water vapor control for modern, code-compliant, light-frame wall assemblies.
This work provides practical guidelines for the mitigation and reduction of thermal bridge problems in existing and new Army facilities. A wide range of building types was investigated from which nine common types were identified, and a number of important thermal bridge details were chosen for each.
This investigation seeks to quantify the effects of thermal bridging in commercial facades and then propose alternative solutions to improve performance by comparing infrared images of recently completed buildings to theoretical models.
Evaluates data on termite hazard and inspection effectiveness, as well as the presence of hidden pathways in assemblies with and without exterior insulation. Recommends updates to current building code provisions.
Airspace R-values should not be used to displace insulation materials required for energy code compliance unless the air spaces are properly constructed to have no air leakage, or the R-value is appropriately discounted for air-leakage.
A growing number of builders are singing the praises of using rigid-foam insulation between the wall sheathing and the exterior siding, creating a continuous insulating layer.
This guide from BC Hydro focuses on improving the thermal performance of opaque building envelope assemblies and interface details, providing practical information to meet the challenges of reducing energy use in buildings.