防水施工有问有答！
Waterproof construction has questions and answers!
问题一、只要刷够3遍就可以了，厚度无所谓吗？
Question 1: Just brush it three times. Does the thickness matter?
刷防水不光要有遍数上的要求、交叉涂刷方向上的要求，每一遍的厚度更重要，即使闭水试验不漏，因为太薄，也用不住；规范要求：地面防水层涂膜厚度应该达到1.5mm，事实上，很多家庭都未做到。
Brush waterproofing requires not only the number of times, but also the direction of cross-brushing. The thickness of each time is more important. Even if the water closure test is not leaky, because it is too thin, it can not be used. The specification requires that the thickness of the surface waterproof coating should reach 1.5mm. In fact, many families fail to do so.
问题二、只要厚度够了就可以，刷几遍无所谓吗？
Question 2: As long as the thickness is enough, does it matter how many times you brush it?
刷防水一定要按工艺要求一遍一遍的刷，上一遍干透了再刷下一遍，如果为了图省事儿，把防水倒在地上随便呼啦开，各个部位有厚有薄，干燥的速度肯定不一样，厚的地方表面干了，下面还呈糊状，一旦此时闭水，防水就等于白做了。
Brush waterproof must be brushed again and again according to the technical requirements, last time dried thoroughly and then brushed again, if in order to save trouble, the waterproof falls to the ground and hurls open freely, the thickness of each part is thin, the drying speed is certainly different, the thick surface of the place is dry, the following is pasty, once the water is closed at this time, waterproofing is equal to doing nothing.