About | Contact | JOIN

Technical library detail

PIMA disagrees

Professional Roofing



PIMA; r-value; polyisocyanurate; insulation

In April, the Polyisocyanurate Insulation Manufacturers Association (PIMA) issued a performance bulletin titled “Measuring the R-value of Polyiso Roof Insulation,” which attempts to refute NRCA’s recommendation that designers use an in-service R-value of 5.0 per inch when specifying polyisocyanurate insulation.

Note: Documents in this section are provided as Adobe Acrobat PDF files. In order to print and view PDF files, the Adobe Acrobat Reader software/plugin, which runs on Microsoft Windows, Macintosh, OS/2 and various versions of UNIX, must be installed on your computer. Adobe Acrobat Reader is available for download as freeware from Adobe Acrobat's website. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files.


Find a contractor

Roof type

ZIP Code

Find roofing contractors by state

Sponsored links