Continuous insulation is used on foundations, exterior walls, and roofs. In addition, continuous insulation provides maximum thermal performance by minimizing thermal bridging. It provides optimal assemblies that dry and also minimize seasonal moisture variations, creating a stable and durable environment for the building structure and interior. Continuous insulation products can also provide products that serve multiple functions including thermal insulation, water-resistive barrier, and air barrier (some composites even add a wall-bracing function or roof ventilation function).

Jay Crandell, P.E., addresses these topics in his “Continuous Insulation: Research, Applications, and Resources for Walls, Roofs, and Foundations” presentation, originally given at the 2019 RCI International Convention and Trade Show.

While the options and opportunities continuous insulation presents are significant, the application must also accommodate cladding installation, fire performance requirements, and other matters important to overall constructability and code compliance.

Crandell’s presentation provides an excellent primer on the many applications of continuous insulation based on a comprehensive body of building science knowledge. This work has resulted in recent key building code and energy code advancements. Review the presentation and more and many more technical resources found at