What is the MINIMUM roof slope REQUIRED for modified bitumen roofing?

The minimum roof slope required for modified bitumen roofing is 1/4 inch in 12 inches. This slope is essential for ensuring proper drainage of water, which helps prevent ponding and moisture accumulation on the roof surface. Insufficient slope can lead to water ingress, which may compromise the integrity of the roofing material and lead to premature failure.

Modified bitumen roofing is designed to be used across various applications, including low-slope roofs, making the minimum slope requirement a critical aspect of its installation guidelines. A slope of 1/4 inch in 12 inches allows for effective water drainage while still being achievable for installation on many structures. This standard is based on industry practices and building codes, which recognize that maintaining this minimum slope aids in extending the lifespan of the roofing system.