Fetching details from the dictionary...

to peel off; to come off; to flake off
古い壁のペンキが剝げて下地が見えている。
The paint on the old wall has peeled off, exposing the underlying surface.
古い柱のペンキが大きく剝げた。
The paint on the old pillar peeled off significantly.
壁紙の端が湿気で剝げている。
The edge of the wallpaper is peeling off from moisture.