2. Use a special gun for gionee frames to hit 1-3 gionee frames at1(according to the crack size, the standard is to cover the crack and fill it up), and then hit 2 gionee frames at 2 and 3 places respectively (because water has certain permeability to the cement base, it destroys the waterproof layer at a certain point, so the surface around this point must be waterproof to achieve the waterproof effect after filling up the crack).
3. The effect after drying.
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Roof is the load-bearing and enclosure component at the top of the building, which is generally composed of roof, insulation layer and load-bearing structure. The roof is also called the "fifth facade" of the building, which has a great influence on the modeling and facade image of the building, and the form of the roof will directly affect the overall image of the building.
References:
Baidu encyclopedia? roof