New Guidance Documents


Richard S. Duncan, Ph.D., P.E.

SPFA Technical Director

 New Guidance Documents from the SPFA Building Envelope and Roofing Committees Now Available

 Stafford, VA (October 23, 2019) - It has been an active summer for members of SPFA’s Building Envelope Committee and Roofing Committee. 

As a result of the efforts of several volunteers, we are pleased to announce the publication of two new TechTips and a new TechDoc from the Building Envelope Committee.  The new TechTips provide installation guidance in a short format on improving adhesion of SPF to engineered wood products, as well as guidance on the installation of SPF over wires and piping to reduce exothermic heat damage.  The new TechDoc SPFA-153, “Spray Polyurethane Foam Insulation for Below Slab Applications” provides guidance for installation of closed-cell SPF below concrete slabs.    Sub-slab insulation, installed before the concrete is poured, is an important application as building codes  are increasing the requirements for insulation below sub-grade concrete slabs – especially in colder climates.

The Roofing Committee has been busy as well.  In the 1990’s, SPFA developed the first SPF Roofing Brochure, AY-130.  This document was last published in 1997.  Recognizing the document needed to be updated, it was not included during the 2015 re-formatting of all of our TechDocs and briefly discontinued.  After significant work with several Roofing Committee volunteers (Bruce Schenke, Jason Hoerter and Luke Nolan), and with support from our marketing consultant and graphic designer, we are pleased to publish the significantly updated SPFA-130 Roofing Brochure.

All of these TechTips and TechDocs are available for free download from the SPFA website here:

Should you have any questions or comments about these new documents, or if you would like to participate in the document development and update process, contact any of our technical committee chairs or the SPFA Technical Director, Rick Duncan 


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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.