Author Archives: Tamara Middleton

What Does UL Classified Mean?

By: Tamara Middleton, Sales Representative – Architectural Products UL, Underwriters Laboratories, is an American consulting company that provides certification on the safety and environmental claims of a product.  In order to be classified under UL a product must meet specific … Continue reading

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What is expanded polystyrene (EPS) exactly?

By: Tamara Middleton, Sales Representative – Architectural Products EPS (Expanded Polystyrene) is a closed cell insulation manufactured by expanding a polystyrene polymer.  Originally discovered in Germany by Edward Simon by accident. Polystyrene is extracted from crude oil along with many … Continue reading

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Roofing Insulation: Impact of Temperature on R-Value

By: Tamara Middleton, Sales Representative Most flat roof commercial buildings today use one of three insulations, polyisocyanurate (polyiso), extruded polystyrene (XPS) or expanded polystyrene (EPS).  These insulations are used above the roof deck and protected by the roof membrane.  Polyiso … Continue reading

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Roof Insulation: A Comparison of Performance & Environmental Considerations

By: Tamara Middleton, Sales Representative – Architectural Products Most flat commercial roof buildings today use one of three insulations: polyisocyanurate (polyiso), extruded polystyrene (XPS), or expanded polystyrene (EPS).  These are used above the roof deck and protected by the roof … Continue reading

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Just How Dense Do You Need to Be?

By: Tamara Middleton, Sales Representative – Architectural Products ASTM C578 uses 10% deformation as it base for compression standards in EPS, including EPS roof insulation. 10% deformations is the weight at which the foam compresses to 90% of its original … Continue reading

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