PIRschuim

PIRschuim is a rigid foam insulation material based on polyisocyanurate (PIR). In German-language technical contexts, the term refers to PIR foam used as a thermal insulation core in construction and industrial applications. It is valued for high thermal resistance, dimensional stability, and relatively low density.

Chemistry and structure: PIRschuim is produced by reacting polyisocyanates with polyols in the presence of blowing agents, catalysts, and surfactants. The reaction forms a closed-cell foam in which gas-filled cells impede heat transfer. Additives such as flame retardants and reinforcement layers may be incorporated to tailor fire performance and mechanical properties. Variants are often faced with foil, paper, or laminate layers for added protection and ease of installation.

Manufacturing and forms: PIRschuim is manufactured as rigid boards, blocks, or spray foams. Boards are commonly used in wall and roof assemblies, while spray forms allow seamless insulation of irregular surfaces. It is also employed as a core material in sandwich panels for industrial equipment and refrigerated installations.

Properties: The material offers low thermal conductivity, enabling high R-values per thickness. It exhibits good compressive strength, moisture resistance relative to alternatives, and dimensional stability across a broad temperature range. Thermal and fire performance depend on formulation and facings, with fire retardants playing a key role in meeting building codes.

Applications: PIRschuim is widely used in building envelopes, roofing systems, cold-chain insulation, and insulation cores in prefabricated panels and equipment enclosures. It is chosen for energy efficiency goals and space optimization.

Safety and environmental aspects: Manufacturing historically relied on blowing agents with environmental concerns; modern formulations emphasize low global-warming potential agents. Proper handling is required to manage off-gassing during installation, and disposal or recycling options are evolving, with emphasis on minimizing waste.

See also: polyisocyanurate, polyurethane foam, building insulation.