Modified Bitumen Roofing Systems are created when a polymer is added to asphalt to extend temperature limits and increase the pliability of asphalt.
There are two kinds of Modified Bitumen
Styrene Butadiene Styrene (SBS) – this type of modified bitumen roof is installed using cold adhesive or hot moppings of asphalt and can come with adhesive backing. Modified bitumen SBS has a rubber-like appearance.
Atactic Polypropylene (APP) – is a thermoplastic polymer that is either heat-welded or torch-applied and gives asphalt a plastic-like quality.
Both types of Modified Bitumen roofing can withstand both high and low temperatures due to polymer modification.
Modified Bitumen holds up well under UV exposure and can last up to 20 years with minimal maintenance.
The adhesives used to attach Modified Bitumen provide protection against water damage.
Modified Bitumen comes with an insulating layer that limits the flow of heat throughout the system helping to reduce energy consumption.