SBS (Styrene-Butadiene-Styrene) modifies the asphalt by forming a polymer network within the bitumen. SBS gives the bitumen rubber-like characteristics and improved resistance to aging and weathering. Most SBS modified bitumen sheets are either set in hot mopping asphalt, torch-applied, or adhered with cold-process adhesives. SBS modified bitumen sheets that do not have factory applied granule or foil surfacing need some form of field-applied ultraviolet protective coating.
SBS Membranes (Self adhesive membranes)
SBS Membranes are widely used in the basement for their superior quality and self healing property. It is comparatively expensive membrane compared to APP membrane. These products consist of blend of distilled bitumen modified with SBS elastomeric thermoplastic polymers and selected fillers.