When a roof leaks, the problem is often due to leaks in and around the metal roof flashing that protects roof edges, valleys, and the junctions between roofing and obstructions such as chimneys, dormers, and vent pipes.
Chimney flashing is a type of roof flashing that creates a waterproof seal to protect your chimney and roof from water damage and penetration. Essentially, chimney flashing functions as weather stripping for your chimney and is made up of three major parts: step flashing, counter flashing-also called cap flashing-and base flashing.
Repairing and replacing your chimney flashing takes a great deal of skill, effort, expertise, and care. You will need the right tools and protective equipment, accurate measurements, and expertise. The process may also take longer to do than you expected which may leave your roof and chimney exposed to further damage while you work on the repairs.