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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.

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