We are building a contemporary beach home on Puget Sound in WA state. We have 2 parameters that we are working with:

1. We want some "combination" windows and the end result is a pretty bulky look where the 2 types of windows meet, particularly when specifying fiberglass or vinyl. (This does not seem to be an issue with aluminum clad windows.) By "combination" window I mean, as an example, a fixed pane window coupled with an awning window below or a transom window above.

2. We want either a full or partial wallboard wrap to the window. We would probably add a wood stool after installation.

We have looked at Marvin Contemporary Studio, but the interior casing of the window is all wood. The Marvin rep we spoke to thought that the wood casing could be ordered trimmed down to allow for a partial wallboard return. We also have concerns about the aluminum cladding on the exterior corroding as we are close to the beach. (Does anyone have experience with today's aluminum products from Marvin or other companies???).

We have also looked at fiberglass windows, but most of them also come with a wood casing inside. Also, the combination windows have that bulky look where the 2 styles of windows meet.

The window sizes for the combination windows are: 54"x90" (#3 on the drawing-- 3 fixed windows each paired with either transom or awning), 28"x90" (#7 on the drawing--3 fixed windows paired with either transom or awning), 18"x90" (not shown, but same as #7 in appearance-- a fixed window paired with either transom or awning) and 96"x90" (#29 on the drawing--a fixed window flanked by a casement window on each side.)

We'd love some advice and direction from all of you who have traveled this road or have helped others travel it!