The asphalt in this system is modified with rubber (SBS is the type most used in our market). This system; typically a two-ply application, with a base and cap sheet, is the most diverse of low-sloped coverings. The base sheet can be mechanically attached, self-adhered, hot-mopped with asphalt, torch applied, or glued with mastics. The cap sheet can be heat-welded, hot mopped or adhered with mastic. These roofs can be covered with insulation, concrete pavers, ballasted with gravel, or topped with soil and plants.
These two ply systems are warranted for ten (10) years by the manufacturer.