The cement bonded particle board (CBPB), both conventional and milled for brick, must be fastened to a frame made of wooden roof sheathing and/or metal profile with self-drilling screws with diameters from 3mm to 6mm with a countersunk head. The recommended pitch of roof sheathing is 400 mm. The recommended width of the rack used for roof sheathing is at least 80mm. For the purposes of fastening, one can use usual screws with a countersunk head. In this case, holes are preliminarily drilled in the chipboard with a diameter equal to 1.2 of the screw diameter. The screw length must be at least 4 times the thickness of the chipboard.