If the steel structure factories buildings are used for a long time, it will be easy to have some problems. The color coated roof are on the top of the buildings. Some measures against leaking of the color coated roof due to the winter rain and snow. The snow is slow to melt in the winter. What makes us worried is that the construction quality is not stable. There are many other hidden troubles after the waterproof work.

Today, some safeguard procedures are introduced.

The thermal expansion of the color coated roof is predominate. If the roofing is insulated, people should do the constriction after it dries. If not it will cause empty drum and shorten the durable years. It is hard to check the degree of drying because of the cement mortar screeding. In these cases, most builders judge the degrees of drying according to the experience. But it is not scientific and does not have a good influence on the construction. In fact, due to the temperature, humidity, water absorption and some other construction factors, it is very difficult to ensure the degrees of drying according to the experience and construction time.

Now, people could find some new type color coated roofing in the market and the kinds of waterproof materials are numerous. There are many classifications of it, from high degree, middle degree to low degree. When build the buildings, people should choose the high-grade materials to do the rain-proof from the source.