Skylight windows can leak for a variety of reasons, including: ● Improper installation: Skylight windows must be installed correctly to prevent leaks. If the installation is not done properly, there may be gaps between the window and the roof that can allow water to seep in. ● Age and wear: Over time, the seals and flashing around the skylight can deteriorate, causing leaks. Weather conditions like hail, snow, and wind also can wear down the materials over time. ● Roof damage: If the roof around the skylight is damaged, such as missing or cracked shingles or tiles, water can penetrate the roof and seep in through the skylight. ● Condensation: In colder climates or during the winter season, condensation can form on the skylight. If the condensation is not properly managed, it can cause moisture damage to the skylight and the surrounding area. ● Debris buildup: Debris like leaves, twigs, and dirt can accumulate around the skylight, clogging the drainage system and preventing water from draining properly. This can cause water to pool around the skylight and eventually lead to leaks. To prevent leaks on skylight windows, have them installed by a professional roofer and perform regular maintenance and inspections to ensure they are in good condition. Any signs of wear or damage should be addressed promptly to prevent further damage and potential leaks.