Commercial roofs fall into two main categories: steep-slope and low-slope. Believe it or not, there is no such thing as a completely flat roof. Steep-slope roofs can be covered with shingles, slate, or metal. Low-slope roofs are classified as built-up, single-ply membrane, or monolithic sprayed foam. Pros and Cons of Steep-Slope and Low-Slope Roofs Steep-Slope: […]