(One Hundred Questions on Waterproofing) #15: The construction seam at the corner of the roof (the corner of the daughter wall) is particularly prone to leakage (especially around the corner of the daughter wall or the pipes); so what are the key points to pay attention to in waterproofing construction?
Answer: 1) The surface must be thoroughly prepared—it is often found that there are remnants such as template chips, iron wire, loose stones, and floating matter; if these are not treated properly, the effect will be greatly reduced. 2) Corners must be treated first.