I'm planning on building a built-in window seat against a wall that has two windows with sills and an apron that extends from the wall about 3/4" to 1":
What's the best strategy for removing this extended part of the sill so that we can build flush against the wall?
Figure we have the following options:
- Replace with new sill
- Cut existing sill flush with wall
- Build on top of or around existing protrusion
Doing #2 would clearly be the easiest but I'm concerned about any draftiness and sealing it back up right. I'd prefer not to do #3 as it would affect the height of the seat by a few inches.
Any suggestions are appreciated.
For reference, here are our renderings of the intended unit. The gray part is a vent for the radiator behind:
Best Answer
I would agree with #2. Sealing it up would be easy with some spray foam or caulking. You would have to put some type of flush trim on to hide the cut, or chisel out a bit more of the sill and piece in some sheetrock and mud it and/or change the window trim to a picture frame casing. Not really a hard job, just not sure what you want. I would like to see what you want the seat to look like in relationship to the window. How much lower than the window do you want the top of the seat to be?