Metal counter flashings protect the top of bituminous base flashings from water entry. The most common metal counter flashing problems are:

- Counter flashings located too high above the base flashing.
- Metal deterioration caused by a lack or loss of protective coating.
- Cracks and open joints between metal pieces.
- The separation of counter flashings from vertical surfaces.
- Reglets not being sealed.
- Counter flashings not tightly fit to base flashings.