Oatey® invented the flashing industry more than 100 years ago. Today Oatey roof flashings are used in commercial and residential applications where a water-tight seal around plumbing vent pipe or outside wall penetrations is required. Oatey® SideFlash™ Flashings are designed to seal around piping, electrical and other-utility penetrations through outside walls. It can be installed over a house wrap or building paper to become part of the building envelope.