Kingspan Kooltherm K5 Phenolic External Wall Insulation Board is designed for superior thermal performance in external wall applications. Each 1200 x 600 x 50mm board features a rigid phenolic core, offering outstanding insulation while remaining lightweight and easy to handle. This pack contains 10 sheets, suitable for new builds or refurbishment projects requiring high energy efficiency standards. The boards are resistant to moisture and provide excellent fire performance, contributing to the durability and safety of external wall systems. Kingspan Kooltherm K5 Insulation Boards are ideal for those seeking reliable, high-performance external wall insulation solutions.