Window Repair
Due to a leak in the window of the entry door, I removed the window today (standard two part plastic frame, sandwiching a single pane piece of glass) to clean things out and replace the sealant/gasket...
Forum Discussion
That butyl tape is what failed in the first place and it will eventually fail again.It likes to shrink and pull in on the corners. To fix it permanently,I use 3M Window Weld in a tube.It can be messy if not careful but it will never leak again.Roughly half of the windows in mine leaked eventually and it was obvious the OEM butyl tape was the culprit.
