The basic process for repairing a modified bitumen roof is the same regardless of the type of damage done to the roof.
Flashing cement is then liberally applied to ensure a complete seal.
First the area around the puncture is thoroughly inspected and cleaned of any loose debris.
Next the roofing cement is carefully but deliberately applied around the area of the puncture. The fiberglass reinforcing mesh is sandwitched between layers of cement to provide a long-lasting repair.