10" x 50' Roll Galvanized steel roll flashing- sometimes referred to as valley metal- is used in a wide variety of applications. The galvanized metal roofing flashing is typically field formed and used in a flashing or trim capacity for various areas of a home which may include valleys- chimneys- fascia- end walls- sidewalls- and many others. Galvanized metal flashing has the best strength of comparable flashing materials but the galvanized metal flashings can eventually rust- especially along cut or exposed edges.