I've had a tough year last year with hidden water damage and rot and had to do a bunch of repairs. Now that winter is over up here in the north east (New Hampshire) I'm taking a look at a few things to see how everything held up. I attached a picture of on repair that was necessary. The rim joist was completely rotted out under this sliding door due to little to no flashing on the house. I replaced the joist, sheathing and some of the subfloor. I then replaced the sheathing with PT plywood and then wrapped the wall and rough opening with bituthene. I went all the way to the bottom of the sheathing and about 20" above the deck. Now I removed the white trim a few days ago (which is PVC board) and there was moisture behind the trim. I'm assuming this is because there is no head flashing or Z flashing (whatever you want to call it) on top of the trim. Should I be concerned about this or is this fine considering the applied bituthene? I'm a bit paranoid about hidden water damage at this point!
A picture is attached. Ggoing to be replacing all of the deck boards this year...
Thanks
A picture is attached. Ggoing to be replacing all of the deck boards this year...
Thanks