The daylighting board is fixed with aluminum profile fastener, and the wave daylighting board is connected and fixed with daylighting board bracket and self tapping screw, and then sealed with glue. The position of the lighting board is generally set in the middle of the span. The daylighting board is connected with the self tapping screw with a cover plate. The hot and cold deformation of the sun plate is large, and it is easy to be cut by the self tapping screw, so the sun plate should have a large hole at the self tapping screw. When installing the daylighting board, the expansion of the daylighting Board shall be considered. The daylighting board does not need to be lapped within 12M, but needs to be lapped if it exceeds 12m. The lap length is 200-400mm. Two layers of sealant are applied at the lap joint. The horizontal lap joint does not need to be lapped. The lap of the longitudinal color steel plate needs to look at the plate type. The common profiled steel plate does not need to be lapped if it is false. It is directly fixed with the color plate with self tapping screws, and sealed with sealant. The lap joint plate needs to be lapped. The longitudinal length direction overlap of the daylighting Board shall be set near the sandalwood strip. There are five types of lighting board: economical type, weather resistant type, heat insulation type, flame retardant type and anticorrosive type. The commonly used specifications of daylighting board are: 750, 840, 820, 980, 950, 900, 475, 760, and 1m-1.2m wide plate, etc.