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This article first appeared in the PB July 2013 issue of Pro Builder.

This new product from Johns Manville meets 2012 IBC requirements for continuous insulation for residential buildings. It is composed of a uniform closed-cell polyisocyanurate foam bonded on each side to a foil facer—one side has a reflective foil facer and the other a non-reflective foil facer. All-Purpose Foil-Faced Polyiso Foam Sheathing is designed for easy installation where high thermal efficiency is required; it resists heat transfer with R-values up to R-22.8 (RSI-4.01).

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