How to avoid errors in the repair of water supply and sewage

When replacing water pipes, it is necessary to take into account that today the most popular materials are stainless pipe and metal -plastic. And the features of metal -plastic are such that over time can weaken the joints. If you have free access to all pipes, then there is nothing fatal about it. The leak can be noticed in time and quickly eliminate. But if you hid the pipes, you may over time face major problems.