Modified bitumen, also known as “mod bit”, is a cost-effective roofing solution. Modified bitumen has been used for over 100-years, but was first introduced to the United States in the 1970’s. Modified bitumen systems are seen as the modern alternative to the traditional built-up roofs (BUR). This is because multiple layers of single-ply modified bitumen are combined to create multi-ply built-up roofing. Mineral cap sheets are available in light color options that help reflect UV light, making modified bitumen an energy efficient roof choice. One of the biggest advantages of modified bitumen roofs is that they are strong. Mod bit is highly puncture resistant, tolerant to foot traffic, UV resistant, can be installed over an existing roof with minimal preparation, and comes in 3’ wide rolls which makes it an ideal solution for complicated roofs that have abnormal shapes or more penetrations than normal.