I accidently drilled a 3/16" hole through a pvc drain pipe behind a wall. I filled the hole with caulking. I want to know if this an acceptable repair.

Unclem

You say you filled the hole with caulking? The pipe? The drywall?
If you have access to the pipe you can try a repair clamp. A clamp can be bought at Home
Depot, Lowe's, plumbing supply house or maybe a well stocked hardware store. There are other way to repair this also but it depends on your technical ability.
I hope this helps.

iamgrowler

Not really.

If it's a drain pipe, things like hair and toilet paper will hang up on the portion of caulking that protrudes inside the pipe.

If it were me, I would make a clean cut through the pipe at the center of the hole and then install an appropriately sized No-Hub band to rejoin the two pieces of pipe.

speedball1

Great answer Growler,
I went back and dug up my answer to the same question a few days ago.
You will most likely be advised by other experts to replace the bad section of pipe but I like a simple repair best. get a piece of PVC in the correct pipe size and cut a one or two inch patch out of it. Now dry off the pipe and prime both the patch and the pipe. Slaver on PVC cement and hold the patch over the hole until it sets up. Don't use for a hour or so. Ordinarily I wouldn't recommend this if this were a pipe under pressure but drainage hasn't any pressure behind it and the patch should last the lifetime of the pipe. If that don't grab ya you can purchase a saddle clamp or No-Hub band,(see image) and patch it that way The only differance being that Growler advised you to cut the pipe in two. I advise opening up the clamp instead of cutting the pipe. good luck, Tom