I am going to be installing a class A chimney and the best spot for the stove in the house is of course one of the worst spots for a chimney up through the roof or outside the house. The location would require ~ 17' of chimney, 15' of which would be above the roof. I have spoken with the local dealer I want to make my purchase with and he says the product he sells (metalbestos ultra temp) will have no problem going up that high with the appropriate roof brace kits, but I can't see a bracket in the catalog he provided that would brace higher than ~6' up the chimney. Does anyone have experience with runs this high or higher above roof level? Can metalbestos be safely installed up to ~15' plus above roof level? Thanks for your help!