Repairing a flat roof depends on the type of damage and the material. The general process is to identify the damaged area, clear away debris, check for other damages, apply roofing cement to the damaged area, lay fiberglass or a patch over the cement, cover fiberglass or patch with another layer of cement, and apply gravel or a final patch to protect from elements. Southern MD Roofing will have the appropriate patch kit based on the material of your roof and the severity of the damage.