What is the definition of a low slope roof?

A low slope roof is defined as having a slope less than or equal to 4:12. This classification is important in the context of roofing design and water drainage management. The slope ratio of 4:12 signifies that for every 12 horizontal units, the roof rises 4 units vertically. Roofs with this slope are distinguished from steep slope roofs, which have slopes greater than 4:12, and from flat roofs that typically have little to no slope. Understanding this definition is crucial for selecting appropriate roofing materials and construction techniques, as low slope roofs can pose unique challenges concerning drainage and waterproofing compared to roofs with a steeper incline.