F22 prep then aft face with 2 ply of BID and doubler pressed into place while wet. Then further plys per plans locally over the doubler. Lower edge transitions were peel plied.

I used weights for the cure. Probably not necessary. There is a concern about warping but this is often when external heat is applied and my room was hot enough at 27C.

F22 Prep and IP Prep

F22 with doubler

F22 Doubler