Division 7 Ebook Page 229 Roof Insulation Overview

Section Overview Roofing and Insulation Systems Recover Single-Ply Roofing Systems When an existing BUR reaches the end of its service life and it must be replaced, a decision must be made to either: 1) completely remove the existing BUR/insulation and replace it with another system, or 2) "recover" the existing BUR with a new FOAMULAR DURAPINK XPS insulation layer and single-ply membrane roofing system. Recover systems save time and money by avoiding tear off and landfill costs, while salvaging the useful R-value of existing insulation layers by keeping them on the roof. To be recovered, existing roofs must be dry or capable of drying. PRMA and Vegetative Roofs Protected Membrane Roof Assemblies (PRMA) extend the life of roofing components and reduce building maintenance costs by eliminating UV exposure and minimizing thermal cycling. PRMA roofs may be infrequently accessed stone ballasted systems, or paver/plaza deck walking surfaces, or fully landscaped vegetative roof gardens. Vegetative roofs are gaining widespread acceptance due to the practical, financial, and environmental benefits they provide. Highly water resistant FOAMULAR XPS insulation is perfect for PRMA. Steep Slope Roofing Systems A steep slope, high-performance commercial or residential roof takes more than just shingles. The performance of any roof depends on an entire system of Roofing Essentials accessory products working and performing together, including ventilation, hip and ridge shingles, underlayment, and attic insulation. Owens Corning provides the complete system for steep slope roofing. Built-Up Roofing (BUR) Systems BUR provides a multi-ply roofing membrane layer that maximizes durability and protection. Owens Corning Trumbull asphalt products, TruLo Lo Odor, TruLo Max and PermaMop asphalts deliver top roofing performance in low-odor, low fuming formulations. PermaMop asphalt is a versatile asphalt that is specially formulated for use on any roof slope. Built-Up Roofing with Trumbull TruLo and PermaMop Asphalt Steep Slope Roofing with Roofing Essentials Accessories

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