Modified Bitumen membrane roofing, an asphalt-based synthetic rubber composite material has been performing in commercial applications for over forty-five years. Modified bitumen membranes come in two forms: SBS, a synthetic rubber blend, and APP, a plastic blend. APP and SBS have different advantages, which we discuss in the next section.
Modified bitumen membranes offer redundancy and puncture resistance, making them ideal for high value properties and key infrastructure.
The easier way of describing them is as a next-generation of built-up commercial roofing systems, best known for their increased flexibility, high puncture resistance, weather and waterproofing, and strong resistance to foot traffic.
This has been a reliable solution for over 50 years and, like other options, has 20+ year manufacturer material and labor warranties available.