With the choice of drainage systems that are now presented on the market, it is incredibly difficult to determine the choice of any person. Therefore, we want to pay attention to the main selection criteria. The first question that excites users is the cost, and inexpensive drainage systems. Typically, metal pipes are about 20-30% more expensive. At the same time, pipes, metal groove compared to plastic ones are much stronger. And the pipes in the clamps of metal are attached very hard. It is impossible to act with plastic in this way, since these pipes are prohibited according to the instructions to clamp. Any drain is designed for snow load. But this applies to the snow falling. If an avalanche leaves the roof, it will demolish any drainage. Special snow holders will help to avoid this, which it is desirable to install when installing the roof. They will not allow the snow avalanche to collapse and protect the drainage. The metal system is protected using a special coating from corrosion. Plastic does not rust at all. The sequence of work when installing both options about one. There is only a difference in how the elements are attached. Metal elements are fixed on locks or when using petals. And the plastic parts are fixed with glue. Installation of drainage is best done when installing a roof. But often they make a roof at first, but the drain is mounted much later. If you just choose the second option, then when installing the roof, at least leave a place to place the drummer hooks.
