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Low-Temp Steam/High-temp water

DSC 0028Lower-temperature steam/process (e.g. <375°F) and high-temperature water piping typically defaults to products such as mineral wool, or even fiberglass or cellular glass. Polyisocyanurate, on the other hand, and ISO-HT in particular have generally twice the insulating value and better than comparable water vapor transmission, water absorption, etc. When your steam, hot water, or hot process demands are less that 350°F (and 375°F intermittent) ISO-HT is undoubtedly the optimal choice.