The color steel composite board has the advantages of convenient construction, high strength and beautiful appearance, so now it is often used in the roof of buildings. But in the actual use, it is found that there will be leakage problems, which has a lot to do with the details of its device. Generally speaking, the leakage of color steel composite plate roof is mainly caused by self tapping screw, color steel plate lap, roof tile, rivet, deformation caused by people on the roof and falling of waterproof glue on the decoration parts such as daylighting window. The corresponding leakage points can be divided into the following points

1.屋面螺钉和紧固件处漏水。这种现象首要出现在双层彩钢板及单层彩钢板屋面，施工过程中，攻丝力气过重、过轻，自螺丝打偏、打斜等，都或许使自攻丝橡胶垫片变形、掉落或者构成凹面，造成屋面点滴漏水并经过保温棉聚积，积少成多，构成多点漏水。别的，自攻丝位置不正，错失彩钢板下的檩条而直接构成孔洞也是引起漏水的重要原因之一。这种漏水现象在单层彩钢板不设保温系统的屋面结构中或许不太显着，首要是因为雨水经过钢板与檩条触摸的部位渗漏后直接涣散，不必定迅速滴落。

1. The roof screw and fastener are leaking. This phenomenon mainly occurs in the double-layer color steel plate and single-layer color steel plate roof. In the construction process, the tapping force is too heavy, too light, self screw deviation, skew, etc., which may make the self tapping rubber gasket deformation, fall or form a concave surface, resulting in roof drip leakage and accumulation of insulation cotton, the accumulation of a little makes a lot, forming a multi-point leakage. In addition, the position of the self tapping wire is not correct, the purlin under the color steel plate is missed, and the hole is directly formed, which is also one of the important reasons for water leakage. This kind of water leakage phenomenon may not be obvious in the roof structure of single-layer color steel plate without thermal insulation system. The main reason is that the rain water is directly lax and does not necessarily drip rapidly after passing through the parts touched by steel plate and purlin.

2.彩钢板搭接处漏水。水平搭接缝和竖向搭接缝，彩钢复合板搭接处漏水，若遇见瓦波过低或者雨水量大没过瓦波时，容易构成大面积漏水，且不易发觉漏水点，一旦构成不易检修，这种情况多见于弧形屋面。其原因首要是两张板之间搭接不紧、自攻丝没有打满构成了空隙等等。

2. There is water leakage at the lap joint of color steel plate. If the tile wave is too low or the amount of rain is too large, it is easy to form a large area of water leakage, and it is not easy to find the leakage point. Once it is formed, it is not easy to repair, this situation is more common in the arc roof. The main reason is that the overlap between the two plates is not tight, the self tapping wire is not full, forming a gap and so on.

3、屋脊瓦漏水。在轻型钢结构屋面施工中，由屋脊瓦引起的漏水也是一种较为常见的现象。在旱季，尤其是雨水量大时，雨水的飞溅经过脊瓦下部两张彩钢复合板对接处缝隙，构成大面积渗漏。

3. The roof tiles are leaking. In the construction of light steel structure roof, water leakage caused by roof ridge tile is also a common phenomenon. In the dry season, especially when the amount of rain is large, the splash of rain water passes through the gap between the two color steel composite plates at the lower part of the back tile, forming a large area of leakage.

针对这几个渗漏的原因，对屋面螺钉和紧固件处、彩钢复合板搭接处及屋脊瓦处进行防水处理。其施工流程为：整理底层→涂刷底层处理防水材料→附加增强层的施工→涂刷防水涂料。

In view of these leakage reasons, the roof screw and fastener, color steel composite plate lap joint and roof tile are treated with waterproof treatment. The construction process is as follows: finishing the bottom layer → brushing the bottom layer to treat the waterproof material → construction of additional reinforcement layer → brushing the waterproof coating.

济南彩钢复合板屋面发生渗漏的情况假如不及时处理和修理，那么时间长了或许就会带来更多的事，还会减少它的运用寿命，提高运用本钱。想要从根本上解决这个问题，那么在安装时就必定要注意各个装置细节。

Jinan color steel composite roof leakage, if not timely treatment and repair, then a long time may bring more things, but also reduce its service life, improve the use of capital. If you want to solve this problem fundamentally, you must pay attention to the details of each device during installation.