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Thread Like Summary
dyrne
Total Likes: 4
Original Post (Thread Starter)
Best permanent patch to plastic pipe? #521237 05/19/2020 3:03 PM
by dyrne
dyrne
I've got some damage to a double walled plastic drain on my dam. Even though the interior wall is ok, water finds its way through the exterior and to the seam between pipe sections and just pours out.

Anyone have an opinion on the best way to repair this?

thanks
-mike

[Linked Image from i.ibb.co]

[Linked Image from i.ibb.co]

[Linked Image from i.ibb.co]
Liked Replies
Re: Best permanent patch to plastic pipe? #521241 May 19th a 04:19 PM
by Quarter Acre
Quarter Acre
I have no experience with this, but look into plastic welding. Aside from finding someone to do it...it's likely your easiest solution.
1 member likes this
Re: Best permanent patch to plastic pipe? #521243 May 19th a 04:28 PM
by Journeyman
Journeyman
The best way to repair plastic is welding. Imagine sort of a solder iron mixing the plastic filler with the existing pipe. Be gentle and patient!
Knowing the type of plastic for proper bonding with the filler rod is key, it looks like HDPE. Do a trial in a non-critical area first.
Look up plastic welding on you tube.

The second best way would be a two part Poly-weld adhesive. Again do a trial first to ensure a good bond.

If you decide to go the second way, I'd fill that rib first, with a product called Great-stuff expanding foam.
It will ooze out, don't worry. Wait for it to dry, then use a wire brush to clean the area down to the pipe.
Apply the adhesive patch over the boo-boo.
1 member likes this
Re: Best permanent patch to plastic pipe? #521245 May 19th a 04:45 PM
by Pat Williamson
Pat Williamson
How bout fiberglass? Will it stick to plastic?
1 member likes this
Re: Best permanent patch to plastic pipe? #521248 May 19th a 06:21 PM
by jason7858
jason7858
+1 for the spray foam then epoxy. Might not even need the epoxy afterwards but wouldn't hurt. That spray foam is pretty good stuff. We use it running any utilities through basement walls. Spray it around the main water coming in. No leaks ever.
1 member likes this
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