Post by Atomic Addiction on Jun 17, 2011 21:00:15 GMT -5
I would do the patch thing. Use a piece of aluminum instead of galvanized. Get something heavier gauge than roof flashing. Most hardware stores have small pieces of aluminum sheet available.
Fill the hole best you can with Vulkum and then make sure that the patch panel is large enough to accommodate the width of butyl tape. Set the screws right through the line of butyl. Then do the sealant (some thing like Dicor) on the perimeter of the panel and the screw heads.