Got a little unique situation that I could use some advice on. I have a 4'x6' sliding window (Andersen 400 series) that I have installed on a bathroom job I am doing. The inside of the jamb, which is primed pine and has trim on this particular style that really is designed to receive wood casing. The clients don't want that, instead they want a drywall "look" on all four sides right up to the jamb trim. Probably a little hard to picture, but basically my delima is I can only rock up to about 3/4 to 1" from the trim, so I have a gap that needs to be filled flush to the window trim on the one side and flush to my sheetrock on the other. I am concerned that trying to fill this gap with standard joint compound will not yield very satisfactory results.
Any suggestions, ideas? Someone mentioned to me a USG product called "structo-lite", which I've never used, but I looked at the product page from USG and it seemed like a product for plastering only.
Thanks! Much appreciated!!