Due to an error (mine) when ordering the windowsills and forgetting that our garage walls are thinner than the house walls we have ended up with our garage window almost flush to the internal wall. How can we finish this internal detail so it looks neat? The plaster goes to the corner of the wall but the reveal is simply the plasterboard edge.
It’s only the inside of the garage but it would be nice to finish it properly rather than leave the bare plasterboard edge which I guess we cannot paint straight onto?
any suggestions?