Guide to Insulation Sheathing - Energy

Revised January 2007 Guide to Insulating Sheathing Table of Contents Introduction ..3 Background ..4 Material Types of Thermosets ..6 R-value ..7 Permeance ..7 Technical Additional Thermal Rain Water Vapor Condensation Design and Construction ..20 General Cladding Roof Foundations Window Related Advanced Framing ..28 Cross Bracing and Inset Shear Panels ..29 Introduction Residential housing design continues to move towards the development of high performance sustainable building systems. To be sustainable, a building must not only be efficient and durable but also economically viable. From this, new methods of enclosure design have been examined that provide high thermal performance and long-term durability but also take opportunities to reduce material use (including waste), simplify or integrate systems and details, and potentially reduce overall initial costs of construction.

For unfaced insulation, the permeability is a function of the material thickness. In general most product manufacturers list the permeance of the material based on a thickness of 1 inch. Increasing or decreasing the thickness of the material will affect the permeance. This can become an issue when using XPS foam insulation.

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  Energy, Insulation, Sheathing, Insulation sheathing

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