INSULATION LAMELLA STRUCTURE WITH SPLIT LAMELLAS AND METHOD FOR INSTALLING THE SAME

In an insulation lamella structure (11) adapted to be positioned above a supporting base layer (20) in a mounted condition, each of one or more insulation lamellas (1) is able to assume a folded state and an unfolded state, wherein each of the one or more insulation lamellas (1) is in an unfolded state in the mounted condition. The insulation lamella (1) is in a folded state provided with a split (9) along the length providing at least two lamella parts (2a, 2b). Each lamella part (2a, 2b) has a first side (4a, 4b) and a second side (5a, 5b) extending along a length of the lamella part. The first side (4a, 4b) faces the split (9) in a folded state, the second side (5a, 5b) opposing the first side (4a, 4b). The lamella parts (2a, 2b are in a folded state attached to each other along the length by a thin neck (3). The lamella parts (2a, 2b) are adapted to be turned substantially 180 degrees in relation to the adjacent lamella part, the centre of rotation being the thin neck (3) such that at least one first side (4a, 4b) of at least one lamella part, or its opposing second side (5a, 5b) on the same lamella part, is positioned substantially parallel to the base plane (BP(x,y)) in the unfolded state.