从哪里看彩钢板屋面渗漏水的真相

1彩钢板搭接处漏水
纵横缝、彩钢板搭接缝漏水。如果彩钢板的波浪太低或雨水过大而不能通过波浪，就容易形成大面积漏水，漏点也不容易检测出来。一旦维修困难，这种情况经常出现在弧形屋盖上。主要原因是两板之间搭接不紧，自攻丝没有完全冲孔形成缝隙等。

2屋脊瓦漏水
在轻钢结构屋面施工中，屋面背瓦渗漏也是一种常见现象。在雨季，尤其是雨水量大的时候，雨水的飞溅通过脊梁瓦底部两块彩钢板之间的缝隙，形成大面积的渗漏。
三。车顶螺钉和紧固件泄漏
这种现象主要发生在双层彩钢板和单层彩钢板屋面。施工过程中，自攻力过大过轻，自攻螺丝偏歪等，可能造成自攻胶垫变形、脱落或表面凹陷，造成屋面滴水渗漏和保温棉堆积，少之又少，形成多点漏水。另外，自攻丝位置不正确，彩钢板下缺檩条直接形成孔洞是漏水的重要原因之一。 彩钢板这种渗漏现象在没有保温系统的单层彩钢板屋面结构中可能不明显，主要原因是渗漏后雨水通过与檩条接触的部位直接散开，不一定迅速下降。
现就彩钢屋面渗漏的处理方案进行讨论， 彩钢板以便了解彩钢屋面的结构、可能的渗漏点及渗漏原因。根据多年的施工实践经验，提出了两种渗漏方案
1屋面整体再防，使彩钢板屋面形成一层与整体相连的防水层。
2屋面螺丝、扣件、彩钢板搭接、屋脊瓦防水。

1. Water leakage at lap of color steel plate

Horizontal and vertical joints, color steel plate lap joints leak. If the wave of color steel plate is too low or the rain water is too large to pass the wave, it is easy to form large area water leakage, and it is not easy to detect the leakage point. Once it is difficult to repair, this situation is often seen in arc roof. The main reason is that the lap between the two plates is not tight, the self tapping wire is not fully punched to form a gap and so on.
2. Roof ridge tile leaks
In the construction of light steel structure roof, the leakage caused by the roof back tile is also a common phenomenon. In rainy season, especially when the amount of rain is large, the splash of rainwater passes through the gap between the two color steel plates at the bottom of the spine tile, forming a large area of leakage.
3. Leakage at roof screws and fasteners
This phenomenon mainly occurs in double layer color steel plate and single layer color steel plate roof. During the construction, tapping force is too heavy and too light, self screw deviation and skew, etc., which may cause deformation, falling off or concave surface of self tapping rubber gasket, causing roof drip leakage and accumulation of insulation cotton, which is much less, forming multi-point water leakage. In addition, the position of tapping wire is not correct, and the direct formation of holes by missing purlin under color steel plate is one of the important reasons for water leakage. This leakage phenomenon may not be obvious in the roof structure with single layer color steel plate without heat preservation system, mainly because rainwater is directly dispersed after leakage through the parts contacting with purlin and does not necessarily drop rapidly.
We are now talking about the treatment plan for the benefit of knowing the structure, possible leakage point and the reason of leakage of color steel plate roof. We propose two kinds of leakage schemes based on many years of construction practice experience
1. The roof is re waterproof as a whole, so that the color steel plate roof forms a layer of waterproof layer connected with the whole.
2. The roof screws and fasteners, the lap of color steel plate and the roof ridge tile are waterproof.