Icynene Building Genius has covered the performance and cost advantages of its various closed cell spray foam insulation products when used in exterior continuous insulation applications, but what is continuous insulation and why are more buildings adopting this approach? We take a short look at what continuous insulation is, as defined by the industry, as well as what is driving adoption of exterior wall continuous insulation in commercial buildings.
What is continuous insulation?
Continuous insulation, also known as CI, is defined by ASHRAE 90.1 as “insulation that is continuous across all structural members without thermal bridges other than fasteners and service openings. It is installed on the interior, exterior, or is integral to any opaque surface of the building envelope.”
Why is continuous insulation getting so much attention lately?
Insulation on the exterior of a commercial building has received a considerable amount of attention recently for good reason. Energy codes are pushing for higher thermal performance values in commercial building walls, specifically in the form of exterior continuous insulation. This particular approach increases thermal performance of the wall due to the elimination of thermal bridging. As a result of the improved performance, energy efficiency and occupant comfort within the commercial building is noticeably increased.
Why is Icynene spray foam a better choice for continuous insulation applications?
Icynene has recognized that R-values for Icynene’s medium density products ranging from R-4.9 per inch for Icynene ProSeal Eco to R-7.1 per inch for ultra-low VOC Icynene ProSeal , typically meets or exceeds the thermal performance of comparable thickness rigid foam insulation board products. With its greater thermal resistance, the use of spray foam insulation can lead to reductions in overall wall thickness over foam board designs, thereby providing a building owner with additional value.
Further to this, because Icynene spray foam is able to fully adhere to the substrate, there are fewer opportunities for convection and/or air leakage to reduce its performance.
Learn more about continuous insulation and the advantages that Icynene spray foam insulation can offer over traditional XPS rigid foam board options here.