A floor construction, a rigid thermal insulation element, and a method of installing a rigid thermal insulation element in a floor gap

摘要

A floor construction (1) comprises a floor including a gap (3) in which a rigid thermal insulation element (4) is mounted. The insulation element (4) comprises an upper side (5) and an opposite lower side (6). The insulation element (4) is provided with at least a groove (7) extending from the lower side (6) toward the upper side (5) and ending at a groove bottom (9) so as to form tongues (8) at both sides of the groove (7). The tongues (8) are mutually pivotable about a pivoting axis extending between the groove bottom (9) and the upper side (5).