Also referred to as valley metal or valley flashing, is used in a wide variety of applications. Typically it is formed in the field for various uses around the home, including valleys (where 2 roof angles meet), bent as flashing for sealing around chimneys, bent as flashing for sealing at sidewall and endwall, formed as a fascia trim, and many other uses. Galvanized roll valley has the most strength in comparison to other flashing materials and will typically last as long as your roofing material. G-60 hot dipped galvanized steel. 20" x 50' continuous seamless roll. Nominal thickness 010.