To free paint stuck window:
- Score the paint film where the sash meets the frame on both the inside and outside of the window.
- Insert a putty knife in the gap between sash and frame, and run it around the opening on the inside and outside of the window.
- Position a flat pry bar on the outside of the window where the sash meets the sill, and tap it with a hammer to force the pry bar under the sash.
- Carefully pry the sash up, working from each side.