The answer to 'signs of flashing damage' is that flashing is the thin metal or plastic material used to seal the joints and gaps around roof features like chimneys, skylights, and vents. Damaged flashing can lead to leaks and water damage in your home. Some common signs of flashing damage include cracks, holes, rust, or separation from the roofing material.
It's important to inspect your flashing regularly and repair any issues promptly to prevent more serious problems. Flashing damage can allow water to seep into your home, leading to rot, mold, and structural damage over time.