Abstract: A disposable, one-time use, protective cover for rough plumb piping and nipples and the like (commonly called and hereinafter referred to as “stub-outs”) that prevents the exposed potable and wastewater stub-outs from being covered with material used during wall, ceiling and floor installation, sealing, painting and finishing. The protective cover comes in sizes to fit over the outside diameter of commonly used interior and exterior potable plumbing pipe sizes (e.g., ½?, ??, ¾?) and interior wastewater pipe sizes (e.g., 1? and 1½?). Plumbers and other workers put the elastic snugly fitting disposable protective cover on stub-outs after they complete the rough plumbing. After walls, ceilings and floors and have been installed, sealed and painted, the worker doing the finish work removes the disposable protective cover from the stub-outs and has access to a clean stub-out.