A system for covering a roof comprising a fixed roof structure, wherein the system comprises elongated sheet metal roof panels to be placed adjacent to each other, the elongated sheet metal roof panels being provided with upwardly extending folds, and an attachment arrangement for a roof provided with elongated sheet metal roof panels and for the attachment of the elongated sheet metal roof panels to the fixed roof structure of the roof, wherein the attachment arrangement comprises one or more attachment plates (22, 22', 22") arranged on top of folds of adjacent elongated sheet metal roof panels, wherein each attachment plate (22, 22', 22") comprises one or more first attachment points (28, 28') comprising one or more through-holes (28, 28') formed by the attachment plate (22, 22', 22"), wherein the attachment arrangement comprises one or more first fastening elements for the attachment of the attachment plate (22, 22', 22") to the fixed roof structure via the one or more first attachment points (28, 28'), wherein each attachment plate (22, 22', 22") comprises one or more second attachment points (28, 28') comprising one or more through-holes (28, 28') formed by the attachment plate (22, 22', 22"), wherein the attachment arrangement comprises roof equipment (40, 42, 50), wherein the attachment arrangement comprises one or more second fastening elements (30, 54, 56) for the attachment of the roof equipment to the fixed roof structure via the one or more second attachment points (28, 28'), characterized in that the elongated sheet metal roof panels are placed adjacent to each other with a gap through which the first fastening element extends down and into the fixed roof structure. elongated sheet metal roof panels to be placed adjacent to each other, the elongated sheet metal roof panels being provided with upwardly extending folds, and an attachment arrangement for a roof provided with elongated sheet metal roof panels and for the attachment of the elongated sheet metal roof panels to the fixed roof structure of the roof, wherein the attachment arrangement comprises one or more attachment plates (22, 22', 22") arranged on top of folds of adjacent elongated sheet metal roof panels, wherein each attachment plate (22, 22', 22") comprises one or more first attachment points (28, 28') comprising one or more through-holes (28, 28') formed by the attachment plate (22, 22', 22"), wherein the attachment arrangement comprises one or more first fastening elements for the attachment of the attachment plate (22, 22', 22") to the fixed roof structure via the one or more first attachment points (28, 28'), wherein each attachment plate (22, 22', 22") comprises one or more second attachment points (28, 28') comprising one or more through-holes (28, 28') formed by the attachment plate (22, 22', 22"), wherein the attachment arrangement comprises roof equipment (40, 42, 50), wherein the attachment arrangement comprises one or more second fastening elements (30, 54, 56) for the attachment of the roof equipment to the fixed roof structure via the one or more second attachment points (28, 28'), characterized in that the elongated sheet metal roof panels are placed adjacent to each other with a gap through which the first fastening element extends down and into the fixed roof structure.