Start With The Problem
Leak investigation identifies relevant entry conditions. Membrane and metal repair respond to the roofing material. Flashing work focuses on the connections around roof features. A project may involve several of these areas.
Describe what you have observed rather than trying to choose the exact repair method. The inspection establishes the scope and whether further investigation is needed.
Know The Limits Of Local Work
Localized repair is appropriate only where it can connect to serviceable material and address the identified defect. Wider deterioration or moisture may require a different plan. A useful recommendation makes that distinction clear before the work is priced.