The polyisocyanurate insulation market, often abbreviated as PIR insulation, has long been associated with high-performance thermal protection in roofing systems and wall assemblies. Known for its low thermal conductivity, fire resistance, and moisture resistance, PIR is widely used across residential, commercial, and industrial construction. https://www.fmiblog.com/2025/05/02/rethinking-thermal-efficiency-the-rise-of-recyclable-polyisocyanurate-pir-insulation-in-circular-economy-models/