I am going to vent a pellet stove from the 1st floor up the side of a two story home. Is it necessary to go all the way past the roof line of the second story to avoid discoloring the vinyl siding with the exhaust? The stove is a Quadrafire castile pellet stove. I think with the normal clearances and the correct type of piping it should not get hot enough to melt the siding?