Sill plate for large window

[bethany14]

I'm about to build the sill plate for our new window, a 4' x 82" monster. I plan to double plate the sill, the two boards laying flat atop each other. I have a spare 2x6 that has no other use as of yet...So my question is: Can I use the 2x6 on top of a 2x4 for my sill plate? I was thinking it might be a nice feature, a protusion just beneath the window. Any thoughts are welcome!

 

[bethany14]

No takers, huh?
I'm on the fence on this one, and could really use some input...
What I'm envisioning is a shelf-ish piece beneath the window, something similar to the shelf beneath the windows on a Craftsman style door.
My concern is what if this protrusion becomes a real pain to trim around

 

[K2eoj]

You can do it if you want too. I always try to work out my trim detail before i frame anything. It could work out to your advantage or disadvantage but I think you could get any look you want just going with the 2 2x4's and not be locked into creating something to work around your 2x6. Just rip that 2x6 down to a 2x4.

 

[bethany14]

I think you're right...I'll go for the simple standard. Thanks for the input