It is not uncommon, while inspecting roofs, to find the test caps still in place on plumbing vents. Part of inspecting the original installation of the plumbing system for leaks requires that all openings be capped off. After the test, the test caps are removed so that the plumbing system can function properly. Here is a picture of a test cap I found still in place recently on a roof----most likely it had been there since 1980 when the building was built.
Even 30 years later the “instructions” for how to remove the cap are clearly visible. In light of the instructions, I got a good giggle out of how the problem was resolved----as shows in the next picture.
Holy vent pipe Batman!
Charles Buell, Seattle Home Inspector
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Anne Hensel
Real estate Broker, Saint Petersburg Fl





It's really a challenge to believe that everything functioned properly for 30 years with the cap in place if the primary purpose of the vent cap is to insure everything works!
Oy vey.
What did they do, drill a bunch of holes in the pipe?!!
Oh no, not reading the instructions. He could never do that. It's much easier to just keep trying into you break whatever it is. Either by twisting it too hard, or kicking it. I have seen "the boys" do that more times than I can count.
I don't need no stinking instructions, are you kidding I just figure it out. RIGHT!