About | Contact | JOIN

Technical library detail

Comparing polyiso R-values

Professional Roofing



polyiso insulation; R value; thermal resistance

Because polyisocyanurate insulation manufacturers recently changed how they determine and report thermal resistance properties for their products, there now is an additional set of R-values being associated with these insulation products. In this months column, the author attempts to explain and clarify the situation.

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.

Roofing industry news

[ More news ]


Find a contractor

Roof type

ZIP Code

Find roofing contractors by state

Sponsored link