Product Description Oatey? All-Flash? No-Calk? Roof Flashings/Galvanized Base can be used in commercial and residential applications where a watertight seal for roof penetrations around the plumbing vent pipe is required. From the Manufacturer Oatey products can be found in residential and commercial applications and have achieved excellent brand name recognition with consumers. All products are backed with the highest quality technical and customer support programs in the industry