Peeling happens when a paint film separates from the surface beneath, usually due to poor adhesion or moisture working behind the coating. The failed paint has to come off, and the surface has to be prepped before repainting, or the peel spreads.
Moisture-driven peeling rarely fixes itself. Water that worked one section loose is still finding its way in, causing continuous damage to the surface, so we look for the source, fix it, and then repaint. Covering the symptom alone just resets the clock and leads to continuous repainting.