The answer to 'why is my skylight worn out' is that skylights can wear out over time due to a variety of factors, including exposure to the elements, improper installation, and lack of maintenance. Common signs of a worn-out skylight include leaks, cracks, discoloration, and condensation buildup.
Skylights are vulnerable to weathering from UV rays, rain, snow, and wind. Poor installation can also lead to gaps and seals that fail over time. Additionally, neglecting regular cleaning and maintenance can cause the skylight materials to deteriorate prematurely. In many cases, a worn-out skylight will need to be repaired or replaced to prevent further damage to your home.