The answer to 'gutters curling' is that gutters can curl for a few common reasons, including improper installation, age and wear, or exposure to extreme weather conditions. Curling gutters can lead to leaks, water damage, and even gutter failure if left unaddressed.
Some of the most common causes of gutter curling include thermal expansion and contraction, poor gutter attachment to the roof, and lack of proper gutter maintenance. Gutters are exposed to the elements year-round, and the repeated expansion and contraction from temperature changes can cause the metal to warp and curl over time. Inadequate gutter attachment can also lead to curling, as the gutters may pull away from the roof as they expand and contract.