It has been my experience that these windows are subject to dampness. We use the greenboard drywall in bathroom to combat this problem, so I thought why not use it in this application as well.
In the picture you can see how I used the greenboard in the trim around the window.
I am very happy with the result!
Green Drywall... Huh? - Nov 16, 2008Cottage on the Edge: Framing Windows - No need to rush the view - Jun 24, 2008