PVC roofing or polyvinyl chloride is a single-ply roofing solution used on commercial or industrial roofs that are flat or low sloped. PVC or polyvinyl chloride, is the third-most widely produced synthetic plastic polymer. Typically attached to the substrate using adhesives or mechanically, using fasteners. The seams are welded together.

Doesn’t include any coating or treatment of the fasteners. Most metal roofs leak in the first yearor two because the expansion and contraction of the metal breaks the rubber gaskets on the fasteners and compromises the seams.

4Rolled roofing is made of the same material as asphalt shingles, and instead of being installed in tiles, as with shingles, it is rolled directly onto the roof. One important difference between rolled roofing and other types of roofing material is that while shingle type roofing may use rolled material as an underlayment, rolled roofing that is stand-alone is often referred to as mineral-surfaced roll roof.

Slate and tile commercial roofs are often considered the best available ? life expectancy is up to 150 years for slate and 100 years for tile.Slate shingles are quarried from mines and clay tiles are fired, as with earthenware. Traditional slate comes in many varieties of colors, thicknesses, and grains. Clay tiles vary in finishes and color, with classic terracotta red being the most popular. Synthetic materials look, install and perform as natural materials but cost less. They also last about half as long (50 years). Synthetic (faux) slate shingles are made from composite materials (plastic or rubber) so they don?t break easily, and synthetic tiles and faux cedar shakes are made from concrete or a polymer composite.