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Repair hole in pvc pipe

bluedog225

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Jan 31, 2012
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Texas
I was clearing some concrete around a 4” PVC pipe exiting my slab and managed to poke a 1/4 inch hole in the pipe.

What’s the best way to repair this?

I can tape it from the outside, so it wouldn’t interfere with the coupling.

I’m tempted to use epoxy but have concerns about the epoxy sticking to the PVC.

My other idea is to tape it from the outside with duct tape, apply cleaner, and then use heavy duty PVC glue from the inside.

I could tape this as well. I know that pvc cleanet/glue will stick. I’d really like to thicken up the PVC glue with something like an epoxy filler.

I’ll only get one good shot of this. If I use the PVC glue, working time, will be an issue.

Has anyone been down this road?

Thanks
 
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bluedog225

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Maybe. I need to go buy a coupling and see exactly where the hole lies in relation to the coupling overlap. Eyeballing it it’s right on the edge of where the coupling would end.

One idea I had is to get one of those big rubber, flexible couplings and just push it back far enough to the stainless steel strap definitely covers the hole. Hoping that leaves enough for a good grip on the next pipe
 

MovingAlong

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Aug 17, 2013
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1,345
I was clearing some concrete around a 4” PVC pipe exiting my slab and managed to poke a 1/4 inch hole in the pipe.

What’s the best way to repair this?

I can tape it from the outside, so it wouldn’t interfere with the coupling.

I’m tempted to use epoxy but have concerns about the epoxy sticking to the PVC.

My other idea is to tape it from the outside with duct tape, apply cleaner, and then use heavy duty PVC glue from the inside.

I could tape this as well. I know that pvc cleanet/glue will stick. I’d really like to thicken up the PVC glue with something like an epoxy filler.

I’ll only get one good shot of this. If I use the PVC glue, working time, will be an issue.

Has anyone been down this road?

Thanks

Some pictures would help tell the story. Guessing this is just a drain, no pressure behind it? If so, that certainly opens up the options for repair...
 

i4ni

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Jan 23, 2010
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1,015
Maybe. I need to go buy a coupling and see exactly where the hole lies in relation to the coupling overlap. Eyeballing it it’s right on the edge of where the coupling would end.

One idea I had is to get one of those big rubber, flexible couplings and just push it back far enough to the stainless steel strap definitely covers the hole. Hoping that leaves enough for a good grip on the next pipe
So is this damage to a pipe that is going to be connected to a new pipe and the damage is somewhat close to the edge where the coupler may cover it? If you had a picture of what's going on that would help immensely. The rubber coupler you're talking about is called a Fernco by brand and are used for coupling non pressurized connections and secured with hose clamps at each end. They make hundreds of options so perhaps a google search may help.
 

Dig Doug

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Apr 16, 2018
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1,166
Is this a
water (pressurized ) pipe
OR
a drain pipe

Drain pipe saddle - rubber coupling ( Fernco ) cut in half use SS hose clamps to secure wrap w/ tape
or
cut it out and get a repair coupling and replace the broken section

if it’s a pressurized pipe it’s best to 90 out and then back in
 

nadogail

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Coronado, CA
If it is really PVC and under pressure I would splice in a coupling.

If it isn't a pressure pipe I like Fernco couplings.
 

larry4406

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Northern Virginia
OP says a 4" pipe exiting his slab, so I will assume it is a sewer lateral.

A small 1/4" hole can be easily repaired using plumbing epoxy such as this one. I have used this in homes where holes for shelving clips were inadvertently drilled into a hidden waste stack. I have this repair in my own home now going on 10 years where a cable guy drilled into a stack installing a jack/outlet.

Other methods as mentioned include:
  • Cut a coupling such that the remaining arc is more than 180 degrees but less than 270 degrees. You can then prime the cleaned pipe exterior and coupling piece, apply PVC glue, and snap the arc piece over the hole. Apply additional glue as needed. If the arc is too long, you won't be able to snap it on the pipe; arc to little and you don't get a snap fit - some trial and error is needed to get a good fit.
  • Cut the damaged section out and use a new section (say 12" long) with 2 repair couplings.
  • If you use a Fernco coupling, make sure you get ones with shear bands so the pipe can't sag.
 
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bluedog225

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Texas
No pressure. It’s the poop pipe.

I’ll get a pic next time I’m out there.

Those Fernco with the shear bands look like they come in various lengths. That would cover the spot.

Thanks for the ideas.
 
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Innovate1

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Illinois near St. Louis, Missouri
OP says a 4" pipe exiting his slab, so I will assume it is a sewer lateral.

A small 1/4" hole can be easily repaired using plumbing epoxy such as this one. I have used this in homes where holes for shelving clips were inadvertently drilled into a hidden waste stack. I have this repair in my own home now going on 10 years where a cable guy drilled into a stack installing a jack/outlet.

Other methods as mentioned include:
  • Cut a coupling such that the remaining arc is more than 180 degrees but less than 270 degrees. You can then prime the cleaned pipe exterior and coupling piece, apply PVC glue, and snap the arc piece over the hole. Apply additional glue as needed. If the arc is too long, you won't be able to snap it on the pipe; arc to little and you don't get a snap fit - some trial and error is needed to get a good fit.
  • Cut the damaged section out and use a new section (say 12" long) with 2 repair couplings.
  • If you use a Fernco coupling, make sure you get ones with shear bands so the pipe can't sag.
I'd be doing the cut section of repair coupling. Use a repair coupling without the center rib. If I had any trouble locating a repair coupling I would be tempted to cut a patch from a scrap of pipe, maybe SDR35 that is thinner that would conform better to the diameter. Technically not quite kosher but it's low ( almost no) pressure pipe. Just get everything clean, put on plenty of PVC cement and apply the patch.
 

frankd

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Aug 5, 2014
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Long Island, NY
I did something similar. Accidentally drilled a small hole in a PVC drain pipe. Because of where it was, I couldn't get good access to it without removing kitchen cabinets. So I cleaned the area thoroughly, then used JB water weld to plug the hole. Then I took a section of PVC pipe one size larger and cut it to form a semicircle that would lay right over the hole. I glued that semi-circle piece on with PVC cement and then clamped it on with metal hose clamps. That was probably 5 years ago and no leaks. 🤞
 
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csp

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Mar 23, 2010
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Franktown, CO
How are you going to install any type of coupling, whether rubber or a slip coupling onto the pipe? Both require an open end to slide them over the diameter of the pipe.
 
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bluedog225

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I’ll get a pic when I’m up there. The pipe currently is a stub sticking out of the slab.
 
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bluedog225

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I’m trying to resist the urge to grind up some pvc, mix with pvc glue to make a paste, and use that as a patch. Seems like a great plan. May run some tests.
 

mike93lx

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Richmond, VA
Cut a PVC repair coupling in 1/2 lengthwise, glue the **** out of it and slap the 2 halves around the section with the hole, couple of hose claps to hold it in place.
This, but just do the top half and save the rest for the next repair
 

Mikes61

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Dec 25, 2023
Messages
265
Cut a PVC repair coupling in 1/2 lengthwise, glue the **** out of it and slap the 2 halves around the section with the hole, couple of hose claps to hold it in place.
This will work if it’s just a non pressurized drain pipe.
 

PoorUB

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Fargo, ND
Don't sweat it. JB Weld and clean the area well with brake cleaner. Use JB Weld putty, not the tubes as the putty will be firm and not sag. Water leaking from it is not a huge issue, dirt or roots getting into it is somewhat and issue.

I would JB weld it and never think of it again.
 
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