September 2002

The SPF industry and ASTM | Essentials

Essentials not ratednot ratednot ratednot ratednot rated

The SPF industry and ASTM

by James R. Kirby, AIA
Be the first to comment

Since early in its involvement with the roofing industry, the spray polyurethane foam (SPF) industry has been active within the U.S. standards community. The current ASTM International standard, ASTM C1029, "Standard Specification for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation," covers the types and physical properties of SPF intended for use as thermal insulation. SPF materials categorized within ASTM C1029 are used for multiple types of SPF products, including roofing materials, wall insulation and storage-tanker insulation.

The standard's physical properties are based on foams using chlorofluorocarbon (CFC-11) as a blowing agent. These foams were phased out in 1993. The current blowing agent is hydrochlorofluorocarbon (HCFC-141b), which will be phased out Jan. 1, 2003. A new blowing agent will be used for the next generation of SPF-based roof systems.

However, the SPF currently used in roofing applications does not meet ASTM C1029 requirements. The SPF industry is taking a two-pronged approach to ensure current SPF-based roof system materials are within the parameters of ASTM specifications by revising the minimum properties within ASTM C1029 and developing a material standard for SPF specifically used for roof systems.

To read the article in its entirety, please log in or register (registration is free).

Log in or register for FREE access to this article and other Professional Roofing online content.

Not a user?

Register now for free access
  • Full access to every article
  • Online Web exclusive information
  • Photo gallery
  • Breaking news
  • Online classified ads

Already a user?

Log in now

User name:



Login help
Click here to have your user name and password emailed to you.

Comments (0) Login to post a comment or rating
There are no comments posted.