Modified bitumen roof patch roll is applied by first cleaning the surface to ensure proper adhesion. The roll is then unrolled onto the prepared area, overlapping existing roofing materials as needed. Heat is applied using a torch or hot air welder to activate the adhesive properties of the modified bitumen. The edges are pressed down firmly to ensure a watertight seal. Finally, the patched area is inspected for uniformity and adherence to ensure durability and effectiveness.