The lateral and end overlap of the color steel plate. When installing each steel plate, its edges should be accurately overlapped and placed on the previous colored steel plate, and clamped with the previous steel plate until both ends of the steel plate are fixed. A simple and effective method is to use a pair of pliers to clamp the overlapping steel plates separately. When the steel plate is positioned longitudinally, its end, especially the upper end, needs to be clamped with pliers to ensure that one end of the steel plate is in place and the overlap at one end is also in the correct position, thereby fixing the steel plate. During the fixation process, the pliers should always clamp the steel plate longitudinally. Before installing the next steel plate, each steel plate must be completely fixed. Fixation must start at the center of the steel plate, then extend to both sides, and finally fix the overlapping edge of the steel plate. For end lap joints, as the roof and wall exterior panels are made using continuous processing methods, steel plates can be supplied according to the length limited by transportation conditions. Usually, lap joints are not required, and the length of the steel plates is sufficient to meet the needs of roof laying.

自攻螺钉的选用。固定螺钉选用时应该按照结构的使用寿命选择固定件，而且特别注意外覆材料的寿命与指定的固定件寿命是否一致。同时注意钢檩条厚度不能超过螺钉的自钻能力。目前供应的螺丝可带有塑料头、不锈钢顶盖或涂有特殊的耐久保护层。另外，除暗扣固定用螺钉外，其他螺钉均带有防水垫圈，而且针对采光板和特殊风压下的情况均配有相应的专用垫圈。

Selection of self tapping screws. When selecting fixing screws, the selection of fixing components should be based on the service life of the structure, and special attention should be paid to whether the service life of the outer covering material is consistent with the specified service life of the fixing components. At the same time, it should be noted that the thickness of the steel purlin should not exceed the self drilling capacity of the screw. The screws currently supplied can come with plastic heads, stainless steel caps, or coated with a special durable protective layer. In addition, except for the screws used for fastening with concealed buckles, all other screws are equipped with waterproof washers, and corresponding special washers are provided for lighting boards and special wind pressure situations.

彩钢板的安装较易掌握，而一些细节的处理比较重要。对于屋面用彩钢板应该在屋顶及屋檐处将彩钢板进行相应的收边工作，其目的是为了更有效地阻止雨水进入屋面以内。屋面外板在屋脊的地方，都可用收边工具将位于钢板终端肋条之间的底盘向上折。它用于所有坡度低于1/2(250)屋面钢板的上端，以保证在泛水板或盖板下方由风吹入的水不会流入建筑之中。

The installation of color steel plates is easier to master, and the handling of some details is more important. For the color steel plate used on the roof, corresponding edge trimming work should be carried out on the roof and eaves, in order to more effectively prevent rainwater from entering the roof. At the ridge of the roof, the outer panel of the roof can be folded up using edge closing tools to fold the chassis between the steel plate end ribs. It is used at the upper end of all roof steel plates with a slope below 1/2 (250) to ensure that water blown in by the wind under the flashing or cover plate does not flow into the building.

在南方彩钢板一般设计为单层彩钢板，为了减少太阳辐射热量进入建筑物内部，在安装屋面板时，可以在屋面系统中装入隔热层。有一种非常简单、经济而有效的方法，即在安装屋面钢板之前，在檩条或板条上铺上双面反射箔薄膜，这种方法同样还可以作为蒸汽隔离，以减少凝聚作用。

In southern China, color steel plates are generally designed as single-layer color steel plates. In order to reduce the entry of solar radiation heat into the interior of buildings, insulation layers can be installed in the roof system when installing roof panels. A very simple, economical and effective method is to lay a double-sided reflective foil film on the purlin or Flat noodles before installing the roof steel plate. This method can also be used as steam isolation to reduce condensation.