Products Main / Patented and Innovative Products / W-Valley Cap Flashing W-Valley Cap Flashing Options * Mode 1Mode 2 Options Choose an optionMode 1Mode 2Clear W-Valley Cap Flashing quantity Add to cart Description The Valley CAP Flashing is a cap flashing device for overlapping and joining two upper-end pieces of Valley flashing within two valleys on a main roof. Customer provides the pitch of the roof when ordering because every roof is different.