Fixed? Maybe, fingers and toes are crossed
The last solution before removing the window ended like this:
Found a can of clear Flex Seal (As seen on TV!) and thought might as well try this. Cleaned the outside edge of the exterior frame and edge of glass at the glazing seal. Masked it up leaving only the edges, exterior and glazing seal/glass. Sprayed two coats of flex seal waiting 2 hours between thin coats. Waited 36 hours and removed all masking tape.
Since that time we have had two days of rain, sometimes heavy and blowing from the west. This problem window faces west. Checked the floor and wall after the rain and it was totally dry. I'm not ready to pronounce it leak free just yet but my fingers are crossed that it is fixed. If we get to October and no wet carpet I'll be a happy camper again.
My complaint with the flex seal is that there is no means of directing the spray and it sprays extremely hard. Difficult to get a light coat without spraying across 12 or more inches. If the pressure could be lowered and fine tuned with a tiny straw it would be ideal.
I have some cleanup to do with overspray and runs that got outside my masked off area so some elbow grease and goo gone will likely fix that. By the way, thanks for asking. I never thought about following up on this thread.
Nick, Sharon and Finnigan