Shed roof styles are merely a large rectangular surface at a slope of 2 inches per foot or greater. Low sloped shed roofs wear out quickly, while more generously sloped shed roofs of 5 inches per foot can last as long as a gable installation. Shed roofs are inspected particularly for shifting or sagging. The design does not take advantage of one side of the roof pushing against the other like in a gable roof. Since most shed roofs have relatively low slopes they are prone to leaks and wear more quickly. Most shed roofs are installed for cost effectiveness and workmanship on extensions done using shed roofs must be carefully evaluated for defects.