it would... wood moves especially in a bathrooms because of heat and moisture. So as long as your ok with the "seams" or corners opening up it would be fine. I have a couple mirrors where the frame is just stuck to the mirror directly with no other attachment. Basically sicks of wood glued to the mirror in a shape.To those mentioning strength of the wood frame, wouldn’t gluing that glass all around basically make it really strong and one “unit”?