Ceiling-cladding or wall-cladding system, metal lamellae (2), preferably consisting of an aluminium alloy, being provided on a single-layer or multi-layer insulating material (1) which is fastened on the ceiling or wall. The web (4) surfaces and/or flange surfaces (5, 5a) of the lamellae (2) are perforated (3). Plastic hoses (7) are laid in the channels (6) formed by the lamellae (2) and the insulating material (1). <IMAGE>
