Rockwool Thermal Timber Frame Insulation Slab is a high-performance insulation solution designed for use in timber frame construction, offering an optimal balance between thermal and acoustic insulation. Manufactured from rock mineral wool, these slabs measure 1200 x 570 x 140mm, providing excellent thermal performance to help reduce energy costs. They have a robust structure that makes them easy to cut and fit into any timber frame cavities. Their unique properties also make them resistant to rot and mould, ensuring they maintain their insulating performance over time.