The Unilin Insulation Unilin Pir Floor is a high-quality insulation solution. It features Unilin Hytherm Insulation, which has very good insulating properties and provides a superb insulating capability. The long-term performance of this product is ensured by the gas-tight foil facings. This floor insulation is available in a size of 8ft x 4ft and has a thickness of 80mm, making it suitable for use on floors.