Regarding the renovation of school toilets, from the necessity and feasibility of the project, the r

1. If there is water on the upper wall near the riser, it may be a leakage of the upper layer; It could also be that the upper layer leaked and leaked down the pipe. >>>More

First of all, this must be directly related to waterproofing, if the waterproof is the best, it is impossible to seep water so quickly, and the tiles are estimated to be wasted, because it must be re-waterproofed, change the master, and must do a closed water test. Secondly, it is also related to the wall estimate, but the second-hand house is estimated to be relatively old, and the concept at that time was not very strong. However, you are purely the responsibility of the bricklayer, and you can be held accountable for making him compensate for the loss of tiles.

Install the smoke extractor, infrared automatic flush valve, and it is best to clean it frequently.

You can sign a contract.

Then do what the contract requires. >>>More

If you want to block, you have to block when you get to the horizontal pipe!