ISO-C1 Overview

Kingspan polyisocyanurate insulation is available in 2.0¹, 2.5, 3.0, 4.0 , and 6.0 lb/ft3 densities, and with variable sized buns which can result in reduced waste when cutting to particular dimensions - thus resulting in cost savings.

[ISO-HT pipe insulation is available for higher temperature applications such as hot water pipe insulation and low temperature steam pipe insulation.]

¹FM 4880 approval only applies to the 2.0 lb/ft³ density

¹ All properties were measured at temperatures at or near 75° unless otherwise indicated, and all test values were obtained from independent certified testing laboratories.
² These are nominal values obtained from representative product samples, and are subject to normal manufacturing variances.
³ Average value through the foam cross section of tested sample.
⁴ Above 300°F, discoloration and charring will occur, potentially resulting in an increased k-factor in the discolored area.
⁵ Table 1 includes the paragraph numbering system utilized within Section 12 of ASTM C591.
⁶ Thermal Conductivities (k-factors) at Low Temperatures: ASTM C591 is the Standard Specification for Unfaced Preformed Rigid Cellular Polyisocyanurate Thermal, and is arguably the key Standard used by insulation system end-users and engineer/specifiers to guide decision-making. Compliance with ASTM C591 is often a prerequisite within an insulation Request for Proposal.
⁷ Frequent and severe thermal cycling can produce dimensional changes significantly greater than those listed here. Special design considerations must be made in systems subject to severe cycling.

⁸ This numerical flame spread data is not intended to reflect hazards presented by this or any other material under actual fire conditions.