Just closing up a new log cabin and have a few placement options for Bosca 450 classic. One spot is front and center of the building directly under a valuated ceiling, about 15 feet from the stove top to the ceiling. Our issue is a glassed-in gable end, using triangular double pane windows. The pipe would run past a 6 foot section of glass on its way out the roof. How far from the windows should pipes be to avoid damaging the glass? I’m looking at double walled Excel and Duravent. Outside temp goes down to -10 or -15c in the winter.