But none of the above methods is perfect. In the case of replacing pipes, you have to disassemble the tile, while other options are imperfect due to their low tightness, which is necessary here, since the rubber parts of plumbing and synthetic seals of the pipes, as you know, distinguish harmful evaporations. In addition, risers with hot water excessively heat the room, which is not very good, especially for residents of some multi -storey buildings, in which the plumbing closet is located in a tight toilet.