How to cap abandoned drain stack vent flashing

Question

I have an abandoned drain vent with the pipe removed and am wanting to somehow cap it without removing all surrounding shingles and re-shingling. Does any product exist that is made to cap an abandoned roof vent flashing? Thank you.

(edit a year later) For anyone reading this with the same problem, I adhered a plastic bowl on it for a year and it held up fine until I got the courage and knowledge to patch the hole and re-shingle the area. When I removed the bowl it was very brittle from UV.

Answer 1

Install a short piece of PVC pipe of the correct size into the flashing. Use pipe strap to fix the bottom of it to the rafters so it won't lift out or move. Replace the damaged gasket in your picture with a new repair one. Then glue a PVC cap to the top of the pipe.

Note, the question was "how". I don't have the experience to tell you if this is easier than re-shingling or if one or the other will give better results. My thoughts on that:

• I won't climb on my roof, and if I'm paying someone to go up there, may as well do it properly and permanently. If I was comfortable walking on the roof but not comfortable doing shingling, which would be an odd combination, maybe I'd repair it this way.
• A capped vent pipe is going to attract negative comments from inspectors who won't take the time to inspect where it goes. This alone is probably a good reason not to do it. When you sell or refinance etc, you may have to deal with these comments or may be forced by the buyer/lender/etc to re-do it.

Answer 2

Find a Tupperware bowl of the right size, and a tube of construction glue. Glue the bowl over the hole. Enjoy the satisfaction that comes from a job well done.