It is necessary to insulate due to the fact that condensation occurs inside the chimney itself. Based on basic school knowledge, it is not difficult to remember that condensate usually appears where there is a temperature difference, in our case, the condensate will be inside the chimney. It is not difficult to guess that in the smoke that is displayed out is a bunch of various chemical elements. One of these elements is sulfur. It is because of it that the pipe itself from the inside with time comes into a very unsatisfactory state. The displayed smoke contains combustion products of different chemical composition.
