The answer to 'why is my drip edge worn out' is that drip edges can become worn out over time due to exposure to the elements and natural deterioration. Drip edges are the metal flashing installed along the edges of your roof to direct water away from your home's exterior walls and foundation. Over many years, the metal can corrode, crack, or become loose, allowing water to seep behind the edge and potentially cause damage.
Some common causes of worn drip edges include heavy rain, high winds, freeze-thaw cycles, and general aging of the metal. Symptoms may include visible rust, cracks, or gaps where the drip edge meets the roof. If left unrepaired, a worn drip edge can lead to water damage, mold, and structural issues over time.