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Polyiso roofing system insulation is likewise produced at high density to become a much-specified cover board. Cover boards safeguard the roofing assembly from roof traffic, mechanical abuse and hail. These roofing system cover boards are resistant and lightweight. The Polyisocyanurate Insulation Manufacturers Association (PIMA) does outstanding work in researching the most current trends in polyiso advances and is a great support for the insulation market.

High-Density Extruded Polystyrene (XPS) Roof Insulation R = 5 With an R-value of around 5 per inch, extruded polystyrene (XPS) is created making use of an extrusion procedure to produce closed-cell rigid foam insulation with polystyrene polymer. Many manufacturers add a color to the formulation to add a special colouration, normally pink, green or blue to identify the item brand.

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For industrial roofing, it is most frequently defined for Inverted Roof membrane Assembly (IRMA) or Protected Membrane Roofing System (PMR) systems. Extruded polystyrene is generally ranked in the middle of cost vs. R-value in terms of cost/benefit evaluation of flat roofing materials. It is vulnerable to solvent-based adhesives and hot asphalt, and its use in PMR systems needing ballast can make structural weight of the assembly an issue.

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High-Density Expanded Polystyrene (EPS) Roof Insulation R = 4. 6 Expanded polystyrene (EPS) is made from the exact same base polystyrene resins as XPS, however the manufacturing process is various, resulting in beads that are formed and cut into various shapes and sizes or formed.  Try This -density items have an approximate R-value of 4.

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Contractors like to set up EPS as it can be cut easily to fulfill site conditions, and it is light-weight. Theoretically, it has a more steady R-value gradually as there are no chemical blowing agents that can outgas. There are no present studies that can verify this attribute. EPS has several disadvantages, nevertheless.

In addition, foot traffic on the roof can damage the material. 6. Glass Fiber and Mineral Fiber Batts and Panels R = Variable by Maker The commercial roof industry phased out rigid fiberglass two-by-four panels as single-ply roof systems became a larger share of the marketplace. Soft underfoot, fiberglass was not suggested for EPDM, PVC or TPO systems.