Not a huge mistake but the sash will rot unfortunately no matter as no matter what you do it will get and be wet. It may last a couple of years if your lucky. You may be able to prolong the rotting by sealing it with Varathane Liquid Plastic or something similar but.....

I'm sorry his email was less than diplomatic.

We are finishing up a to-the-studs reno of our 1960's bathroom with a wood window in the shower. It was pretty terrible - not only was the window trim rotted, but all the studs under the window and the insulation under the window were completely rotten.

Unless the window is in a location that will get only a few water droplets every once in a while, I would strongly urge you to reconsider so that you don't have to rip it out one day and go through what we have.

Thanks for your replies. I have an email into the window rep for a replacement cost in fiberglass. I could use this window on the garage and call it done. I don't think its a huge expense, but annoying nonetheless as I'm eating crow!

albryant, sorry did not realize I need to be diplomatic. gypsy asked a question and i answer it. You said essentially the same thing the only difference is I cut right to the chase.

Millworkman - I was referring to the email she got from her architect. She said he scolded her, so I said I was sorry he wasn't tactful in his advice. My comment was not directed at you.

Sorry for your misinterpreting your post, I realize I was a little direct but she sounded like she needed the advice pronto and figured no sense beating around the bush and being at all vague.