Proper ventilation is critical to the success of a steep-slope roof system. Roof vents are required in spaces with attics. A proper rule of thumb for roof vents is to apply one square foot of ventilation for every 150 sq. ft. of attic space.
There are several types of roof vents on the market and they are typically made from plastic or metal. Roof vents come in various shapes and sizes and are available in many colors.