Polyiso update

Abstract
The author gives an update on a number of changes regarding polyisocyanurate insulation.

Date
5/2002

Author(s)
Mark Graham

Page(s)
64

Source
Professional Roofing / National Roofing Contractors Assn

Keyword(s)
polyisocyanurate insulation; ASTM c 1289-01; blowing agent; R-value

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