Firestone modified bitumen roofing systems are applied through a multi-step process. First, the substrate is prepared to ensure proper adhesion. The modified bitumen sheets, which contain polymers for enhanced flexibility and durability, are then rolled out and positioned. They can be installed using torch-applied, cold adhesive, or self-adhered methods. Heat or adhesive activates the bonding agents, ensuring a watertight seal. Finally, seams are reinforced and inspected to guarantee the integrity of the roofing system.