The 50mm Kingspan Kooltherm K108 Cavity Insulation Board is a high-performance insulation solution designed for use in cavity wall applications. Measuring 1200mm x 450mm and providing a total coverage of 5.4m2 per pack, this rigid phenolic insulation board offers excellent thermal efficiency while maintaining a slim profile. The Kooltherm K108 board is lightweight, easy to handle, and suitable for both new builds and refurbishment projects. Its closed-cell structure delivers outstanding moisture resistance, helping to improve building energy performance and reduce heat loss through external walls.