These are french doors, one opens inward the other is passive. The one that opens has a storm door and had no rot. All the rot is on the passive side.
The rot is on the outside casing and brickmold, Both the brickmolding and casing are destroyed for about 6 to 8 inches from the bottom.
When it storms there is a collection of water under the carpet opposite the rotted areas
There are 3 large custom windows directly above the doors that leaked on the inside until they were treated two years ago. Could they still be the problem on the outside?
I have repaired the door frame but I'm still not sure I have corrected the source of the problem.
I removed all the rotten wood, replaced it with new wood then covered the repair with new brick molding and casings.
Each peice of wood that I applied was caulked throughly before adding another so that every joint in the new work is primed, sealed and caulked.
I noticed that the threshold moved slightly when I caulked it so I'm not sure the caulking on the threshold was affective and could have been the problem.
Waiting for the next storm to see if the problem is corrected.
Thank for any additional suggestions for where the water might be entering the door frame.