ICC-ES Acceptance Criteria for Spray-Applied Foam Plastic Insulation (AC-377)

Prior to 2008, the International Code Council Evaluation Service (ICC-ES) maintained acceptance criteria for SPF as part of AC-12 Acceptance Criteria for Foam Plastic Insulation.  Due to performance, application and manufacturing characteristics of SPF being different from that of other foam plastic insulation, the SPF industry, through SPFA, worked with ICC-ES to craft a separate acceptance criteria. This new acceptance criteria, AC-377 Spray-Applied Foam Plastic Insulation, approved in 2008, would eventually allow for the SPF industry to differentiate the unique performance aspects of spray foam, and demonstrate its compliance-points easily to the building code community. A copy of AC-377 may be purchased from the ICC-ES website here.


Since 2008, the SPF industry has worked through SPFA with ICC-ES and many external industry stakeholders to modify, update and create new content within AC-377 to keep up with the product, its performance and applications.

On June 3rd, 2009, the ICC-ES approved another change to AC-377, reflecting the industry's increased focus upon fire safety and testing, to modify the fire test procedure for alternative ignition barrier assemblies.  Read the summary of changes, projected milestones and sunset dates, and other background on the project also linked at the bottom of this page (ICC-ES June09 Outcome Summary Fnl.pdf).

The ICC-ES Committee meets up to three times a year to review proposed changes to AC-377.  Commonly acceptance criteria undergo changes on a regular basis to reflect the advances in safety, performance and product development, so it is imperative to maintain awareness and monitor the ICC-ES agenda for upcoming meetings.  The ICC-ES webpage for these meetings is available online here.

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SPFA believes that the path to a healthful, safe, high-quality and performing SPF installation travels through the hands of a knowledgeable, trained, experienced, and ideally PCP-certified professional contractor.