Extruded Polystyrene (XPS)insulation and Polyisocyanurate (ISO)insulation Are Both Closed- Cell
Essay
Extruded polystyrene (XPS)insulation and polyisocyanurate (ISO)insulation are both closed- cell plastic foams, consisting essentially of the same chemical composition, and both have HCFC gas trapped in cell cavities. Yet their q- values are different. The q- value for ISO = 6.0 and that for XPS = 5.0. Why is that so?
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ISO insulation board is has a facer lami...View Answer
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