1. The roofing waterproof layer is exposed to nature, exposed to hot sunlight, wind swells, erosion of rain and snow, temperature and cold in summer, temperature changes in day and night, and changes in expansion and contraction repeatedly, without excellent wood properties and good protection. Measures, it is difficult to achieve the required durability. Therefore, a waterproof material with high tensile strength, high elongation, and good aging resistance should be selected.
2, why the wall leakage, are now because the wall is too thin, mostly light block masonry, a large number of internal and external joints, and then the door and window and the wall joints, sealing is not strict, rain from the seam infiltration. Waterproof wall can not be used coil, only paint, but also combined with exterior decoration materials. Only sealant can solve the problem.
3, underground building waterproof material. The underground waterproof layer is soaked in water or very moist soil for a long time. The waterproof material must have good water resistance.
There are three characteristics of waterproofing in toilets and baths. The first is not affected by the natural climate, the temperature change is not, the material's elongation rate is not high; second, the area is small, there are many yin and yang angles, and there are many pipes through the floor; Third, the waterproof layer on the wall is tiled and bonded Agent affinity is good. According to the above three characteristics, it is not possible to choose a coil, only the coating is most suitable.
5. There are more and more overpass projects in urban construction, and reinforced concrete slabs must be waterproof in order to extend the service life.
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