Commercial roofs are most often low slope. Low slope roofs refer to roofs with slopes less than, but not greater than 3:12 slope. Low and steep slope roofs can appear on commercial buildings at the same time. Because of the minimal slope, low slope roofing materials must be weatherproof to prevent damage associated with slow water drainage. Low slope roofing components should include reinforcement (for strength, stability and puncture resistance) and surfacing (for UV protection and reinforcement).
Low slope roofing systems can be categorized into several types:
Built-up roof (BUR) membranes: BUR systems (or asphalt and gravel roofs) are made of multiple layers of bitumen, roofing felts or ply sheets and a surface cap sheet, coating or gravel.
Metal panel roof systems: Metal panel roof systems are recommended for their water-shedding quality and longevity.
Polymer-modified bitumen sheet membranes: These multi-layer roof membranes come in roll form and are most commonly granular surfaced for UV protection.
Single-ply membranes: Single-ply membranes come in thermoplastic (TPO) and thermoset (PVC) varieties, to name a few.
Coatings: Roof coatings restore or prolong the lifespan of an existing roof; these can be used over a variety of materials.
Below, scroll through the commercial roofing manufactures Ivan Jones & Associates represent.