Changing weather from hot to cold can lead to expansion and contraction of substances. Skylights are also among the things that get affected by this. Accumulation of water in the gaps in skylight is the main reason for skylight leaks. At the time of low temperatures, this water freezes and expands, also leading to the expansion of gap. When this procedure repeats three to four times, the water escapes in the form of leaks. The solution for skylight leaks problem is either skylight repair or skylight replacement. Most of the times, repair of the skylight works out and the latter is not required. Further, replacement of skylight also means addition of expenses and starting a construction project in house. However, with proper materials and knowledge, even old skylights can also be repaired easily. Firstly, it is necessary to find out the places of leaks which often are along the rubber lining between metal and glass. Thus, it is better to inspect all the worn out spots and cracks. Also, when skylights are fixed on shingled roofs, many times nailing is not fully done and water collects between the nail head and the surface. This can be prevented by hitting the nails completely. Remember to call in an expert if you aren’t sure about repairing them yourself.