What is Continuous Insulation?

Unlike typical insulation installed between framing members, continuous insulation (ci) provides uninterrupted thermal insulation for unparalleled performance. Foam plastic products can also serve as the water resistive barrier and air barrier for a structure, providing a 3-in-1 building envelope solution.

Regardless of the name – from the more common “foam board” or “foam panel” to the code-defined “foam plastic insulating sheathing (FPIS)” – the science behind this approach to ci is worth spending some time on!

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Wall Calculators

Calculators to help assess U-factors and vapor retarder options for steel and wood frame wall assemblies using foam plastic insulating sheathing (FPIS) as well as wood frame wall bracing to optimize overall wall assembly design.

Get a quick overview of the type of content available on this website regarding the many applications and benefits of foam plastic insulating sheathing (FPIS) continuous insulation (ci).