PACK OF 20 (Total 20 Units) - Multi Roll Roof / Loft Insulation 4m x 1160mm x 200mm - This Multi-Roll is a lightweight, non-combustible glass mineral wool insulation roll. The flexible roll 2 x 580mm/3 x 386mm is perforated to allow easy installation between common joist spacing's and minimum onsite cutting and waste. This Multi-Roll is primarily used as thermal insulation in new and existing lofts/cold roofs. However, it can be used in a number of other applications including suspended timber ground floors. When used in a loft/cold roof, it can be installed between and over the joists. Key Features - Provides excellent thermal performance with a thermal conductivity of 0.044W/mK Classified as A1 non-combustible (the highest possible rating) Manufactured from up to 84% recycled glass Simple installation process