Modified bitumen roll is applied in asphalt or bitumen modification processes through a heat and adhesive bonding technique. The rolls are heated to activate the polymer modifiers, enhancing the elasticity and durability of the asphalt. Once heated, the rolls are unrolled and adhered to the substrate, often using a torch or hot air to ensure proper bonding. This process improves the performance of the asphalt, making it more resistant to temperature fluctuations, cracking, and fatigue.