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Insulation Insights

A Hunter Panels and Hunter Xci Blog

Roofing Comparison of Polyiso and EPS Insulation

Roofing Comparison of Polyiso and EPS Insulation

First, let’s define the two types of insulation we are comparing. Expanded Polystyrene (EPS) is a lightweight, rigid, thermoplastic closed-cell foam insulation. Polyisocyanurate (Polyiso) is a rigid, thermoset closed-cell foam board insulation consisting of a foam core between two facers. Advantages of Polyisocyanurate Over Expanded Polystyrene: Long-Term Thermal Resistance (LTTR)Long-Term Thermal Resistance (LTTR) is a […]

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