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Spray Polyurethane Foam Insulation on Interior Surfaces of Metal Panels

This Technical Bulletin is intended to serve as a guide for the application of spray polyurethane foam insulation (SPF) used in metal panel assemblies. Single skin metal walls and roofs are durable and sustainable components of a building envelope system, however the cladding offers no inherent insulation value to the building. To improve the energy efficiency of buildings, insulation, air barriers and vapor retarders are commonly used.

 The metal panel manufacturer should be consulted when considering using SPF on the underside of standing seam metal roofing due to the possibility of restricting the intended thermal movement of the roof panels. 

Closed-cell Spray Polyurethane Foam is a viable insulation material for the interior surfaces of steel and aluminum metal wall panels and through-fastened roof assemblies. 

 Possible deformation, distortion, or oil canning caused by the application of SPF depends on the installation conditions, installation application methods, proper product selection, and applicator training. 

SPFA-PCP accredited contractors and certified installers familiar with SPFA guidelines have access to SPFA resources. 


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