Product Description Earthwool Loft Roll 100mm (44) is a flexible glass mineral wool quilt which is lightweight, resilient and non-combustible. The rolls are 1140mm wide and are either partially perforated or fully cut to produce either 2 rolls 570mm wide or 3 rolls 380mm wide. For use as a top up layer or between ceiling joists. Lightweight and economical insulation quilt. Partially cut perforations giving flexibility. Provides excellent thermal performance.