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I was trying to mount a shelf and while drilling holes for the screws, felt some resistance against the drill. Tried to push the drill a bit further, but stopped as I was not sure what the resistance was. Removed some more drywall to see that I had scraped a 45 degree elbow joint on the PVC drain pipe. The scrape looks like its right at the end of the elbow (bell-end?). This looks like a drain pipe draining from the 2nd floor. There is no leak. Can I just put some epoxy on this or am I going to need to do a bigger repair?

Scraped pipe Size of hole for reference Photo without flash

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  • New pipe/fittings come from the store with worse dings than that. Looks like ABS DWV pipe, not PVC. The solvent cement used to "glue" pipe/fittings together is a better patcher than epoxy.
    – kreemoweet
    Feb 21 at 5:24
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    Drain pipes aren't under pressure. It just looks dinged, if it's not leaking I wouldn't sweat it. Feb 21 at 6:50
  • Thank you, these comments make me less anxious. Never tried working with plumbing, so this had me worried. I want to patch it just to be extra careful.
    – user183201
    Feb 21 at 7:08
  • @kreemoweet isn't ABS usually black not grey/white? I've not purchased/used/seen in the field ABS pipe, so I'm not 100% certain...
    – FreeMan
    Feb 21 at 11:58
  • I had pictures from before the drywall went up. The pipe is labelled as "Cellular Core PVC pipe". The pipe itself is white, but the elbow is a slightly different shade of white. Maybe the flash from the phone makes it look darker. Adding a photo without the flash.
    – user183201
    Feb 21 at 14:45

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It's probably fine as it is.

The stuff to use to fix this is a PVC solvent cement that contains a lot of filler, eg: "Marley MCS® Solvent Cement" or you could mix in some ground PVC to regular PVC pipe cement to make a paste.

To ensure a good weld, prime the surface first with PVC pipe primer.

There's going to be lots of yucky volatile chemicals so crank up the ventilation.

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