Update of SPFA-141 Spray Polyurethane Foam for Exterior Subgrade Thermal and Moisture Protection


Richard S. Duncan, Ph.D., P.E.
SPFA Technical Director

Update of SPFA-141 Spray Polyurethane Foam for Exterior Subgrade Thermal and Moisture Protection

Fairfax, VA (April 3, 2019) - Members of the SPFA Building Envelope Committee just completed a significant update of an existing TechDoc, SPFA-141 Spray Polyurethane Foam in Cathedralized Ceilings and Unvented (Conditioned) Attics.  This document addresses the application of SPF below sloped roof decks when insulating cathedralized ceilings and creating unvented attics.   The new document can be downloaded from the SPFA website here.  SPFA would like to acknowledge the help from the following volunteer members of the SPFA-141 task group:  Mac Sheldon of Sheldon Consulting, Roger Morrison of Deer Ridge Consulting, Henri Fennell of HC Fennell Consulting, Jim Andersen of JA Consulting and Steve Loftis of NCFI. 

About Spray Polyurethane Foam Alliance (SPFA)

Founded in 1987, the Spray Polyurethane Foam Alliance (SPFA) is the voice, and educational and technical resource for the spray polyurethane foam industry. The Alliance is a 501(c)6 trade association comprised of contractors, manufacturers, and distributors of polyurethane foam, related equipment, and protective coatings, inspections, surface preparations, and other services. The organization supports the best practices and the growth of the industry through a number of core initiatives, including educational programs and events; the SPFA ISO-17024 Professional Certification Program providing professionals with the tools to differentiate themselves from competition and a reference for customers looking to hire qualified contractor services; technical services covering publication of literature and guidelines, safety materials, and representation of the industry with various construction code bodies; federal and state advocacy; industry promotion efforts including an annual convention and expo drawing 1,400 SPF professionals, publication of Sprayfoam Professional Magazine; and research and networking opportunities for members.


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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.