This type of roof is made of profiled colored steel plate as the surface layer, and the interior of the sandwich plate is filled with thermal insulation materials. When the water leaks, the rainwater passes through the insulation layer through the gaps and cracks of the color steel plate, and the rainwater flows through the insulation layer, and the accumulation of a period of time will flow into the room! The leaking places are mainly manifested in the lap joints, rivets and the roots of the gutters of the color steel plates. And the connection between the roof panel and the main structure (referring to brick-concrete or concrete frame) leaks. The leakage points are more complex, including ventilation ducts, lighting windows, and turning and overlapping parts, which should be the focus of inspection for water leakage.
1. If the roof deformation is large, repair is the main method, and replacement is the supplement. When it is really necessary to replace the color steel plate, the replaced color steel plate does not have to be the same as the original one. When dealing with the overlap between the plate and the plate, it is necessary to be strict, and there must be no water leakage points. The two ends of the replaced color steel plate cross the vertical 360 The position of the gusset plate, if it is directly connected, it should be fastened with a buckle iron. Of course, the waterproof layer still needs to be done, otherwise the problem of water seepage and leakage will be serious in a few years!
2. For the maintenance project of color steel plate, Youhui Waterproof has many years of construction experience and concluded that the color steel plate roof is not suitable for the waterproof material of the coiled material. There are three reasons: the exposed service life of the coiled material is greatly shortened, and it is easy to age, crack and fall off; the coiled material and the color steel plate If there is a certain gap in the adhesion, it is difficult to find the water seepage point once the water seeps; the high temperature resistance of the coil is weak, and the material with better high temperature resistance should be used for the color steel plate roof!
3. Color steel plate repair is suitable for water-based waterproof paint repair, and its performance meets: high temperature resistance and corrosion resistance, generally high temperature resistance up to 170 ℃; not easy to age and can be used for a long time exposed outside; non-toxic, tasteless and pollution-free; high elasticity, high ductility and tensile strength Powerful and other aspects of performance!
4. The waterproof connection with the main body should be reasonable, and the seams should be sealed with waterproof and weather-resistant materials or caulking paste, otherwise water will enter and cause water leakage.
