Nice job on taping and sealing the windows. I'm still amazed at how many brand new, very high end homes, that re built without sealing the windows. I asked a few different builders about this, and they all say that the brick, or rock, or trim will do that. I've remodeled and repaired too many homes to believe them. Even worse is when somebody buys new windows for their house and they just replace the glass and leave the old, leaking frame in place. I've removed the interior trim and found leaves between the window frame and the studs!!!
Lately, the trade magazines are now writing about how much better the liquid waterproofing membrane type products are at sealing a house over house wrap and tape. Their tests are showing that when they do not use house wrap, but paint the exterior sheeting, window frames and all openings in the walls, that they can get a much higher rating then any other method. Pretty much the same thing Zip Siding uses, and tile guys use in showers.