There are several common problems with roofs that have been built up. These problems can result from poor installation, insufficient maintenance, or severe weather conditions. Ponding water is one of the most frequent problems with roofs that have been built up. When water collects on roof surfaces and doesn't drain properly, it is called ponding water. This can lead to roof membrane failure and degradation. The growth of mold or mildew can also cause roof damage and pose health risks to building occupants. Leakage is another problem that can occur with roofs that are built up. Anywhere there is a crack or hole in the roof membrane, leaks can occur. These leaks are difficult to locate and can cause serious damage to your building. Wind damage can also be caused by roofs that are built up. High winds can lift the roof membrane and cause it to peel off from the underlying roof deck. This can lead to more damage by creating gaps that allow water or debris to enter the building.