With the development of market economy, all aspects of color steel plate in China have made great progress, which has laid a solid foundation for other industries, and also brought great changes and convenience to people.Especially in the construction industry, the pattern of building materials mainly composed of bricks, tiles, ashes and stones has been changed, and color steel plate structure buildings have emerged.But there are also its shortcomings, such as color steel plate, the main problem is: the roof, rivets, board joints have leakage, affecting the normal use.Through research, test and construction, some effective maintenance methods of large-scale color steel sheet roof seepage are summarized by relevant experts.The maintenance method of color steel plate leakage is as follows:

1、 Repair method for leakage of rivet: apply sunshine single component waterproof adhesive for 4 times, with thickness of about 1.5mm and diameter of about 50-60mm. The next time the coating is applied for more than one time, the coating is not stick to hands, and the diameter is larger than that of the first time, which is thick in the middle and thin in the circumference.In this way, the rivet will not leak.

2、 Leakage method of color steel plate joint:

　　1. the two ends of the joint can be coated with 60mm wide sunlight 2000Pa single component waterproof adhesive, and the joint is adjacent to 20mm without coating.

　　2, non-woven fabric, 150 mm wide, pasted on the waterproof adhesive with sunlight 2000Pa.

　　3. brush the non-woven fabric or glass fiber cloth for three times, and the width of the latter one is 50mm wider than the previous one, and the thickness is about 1.8mm.The later coating shall be applied more than one time without sticking hands.

In terms of some details, color steel plate will not have much problem in general, so color steel plate is the best building material in building materials.