moving bathroom window, caulking, flashing

I made a mistake in … I was going to say in my drafting, but the mistake was from lack of drafting.  The window opening was 1-1/2″ too low.  This, after flashing it all in Blueskin butyl flashing tape – expensive stuff to waste!  HFT and I talked about whether to fix it or just live with it.  I, in my stubbornness, decided to fix it.  Because of the framing style, it wasn’t too difficult to fix.  New window opening: 

After moving & reinstalling:


We used Dynaflex 230 sealant caulking for windows, doors, etc. 

I bought some metal window flashing (which we will also use at 520 when we get to it) and taped it. 

We stuck some backer rod (3/8″ and 5/8″) in the holes to stop using so much sealant in such large gaps, cut the shims, and sealed with said caulking.  The trim – 1×6 planks – will cover it all. 

This how it looks at the end of today.