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Technical library detail

Insulation thickness tolerances

Professional Roofing



rigid board insulation; thickness tolerance

During the past several months, NRCA's Technical Services Section has received a number of inquiries from contractors who have noted some variabilty in the thickness of rigid board insulation. This months column explores the thickness tolerances commonly associated with rigid board insulation products, explains a concern that may result in the field because of such allowable tolerances and offers suggestion for addressing the potential problem.

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.


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