Isover Spacesaver Attic Insulation G3 is a pre-perforated insulation roll designed for use in attic flooring. It can be used with either 400mm or 600mm centre joists. This insulation helps reduce heat loss and improve energy efficiency in homes. It features good thermal performance, excellent acoustic properties, and excellent fire safety with an A1 fire rating. The insulation is vapour permeable and breathable, allowing for moisture to escape. It has a thickness of 100mm and covers an area of 14.13m2.