Years ago I installed a stainless steel prefab chimney to the side of my home. I am adding an addition and the chimney will travel trough the new addition and roof. Does anyone have any recommendations as how to flash the chimney through the roof. I would like to install the roof flashing made by the chimney pipe manufactures but I only have 4 inches of space between the chimney and side of the current home. Roof flashing is 24" by 24" and even if I do cut a portion of the flashing off I may ruin the roof flashing. Does any one have any recommendations?I am really trying to avoid boxing in the chimney that will be above the new roof line. Any help would be appreciated. Thanks.