Which type of roofing is NOT typically considered steep slope?

Buried membrane roofing is categorized as a low-slope or flat roofing system, which is distinct from steep slope roofing types. Steep slope roofing is defined by pitches that generally exceed 3:12, which is where the roof's elevation rises three inches for every 12 inches of horizontal run. This category includes materials like tile roofing, asphalt shingles, and wood shakes, all of which are designed to shed water efficiently due to their angles.

In contrast, buried membrane roofing typically rests flat or at a gentle slope, relying on waterproof membranes to prevent leaks. This type of roofing is intended for commercial applications, where water drainage is managed through grading and drainage systems rather than the natural shedding that occurs on steeper roofs. Understanding these classifications is crucial for selecting appropriate roofing materials and ensuring proper installation techniques align with the roof's pitch.