How to Repair a Pinhole Leak in Copper Pipe.

July 3, 2018 at 5:08 pm by ResponseAdmin | Posted in plumbing

There are a number of options: many require the water turned off and the water drained from the copper pipe.

Patch Clamp

A mechanical repair clamp that is placed over the leaky area. Go to a hardware store or plumbing supply. This really should be looked at as a temporary fix.

Epoxy Patch

A variety of materials, many epoxy based, could be put on the leaky area after the water is off and the pipe is drained, and the external pipe surface is cleaned well to removed dirt, dust bunnies, and corrosion. These are also available in the plumbing section of a hardware store

Coupler repair

Patch the pipe with a coupler. If you need to repair a leak quickly and properly but you don"t have any spare pipe on hand – just a coupler and solder, that"ll do just fine. Cut the pipe over the pinhole leak so the pipe splits in two. Sand the edge, and clean the edge. Apply your flux to both ends of the pipe and attach the coupler – then hit it with your torch and apply solder. This repair isn"t really as good as replacing the pipe – but it"s the next best solution.

Switch out the pipe

With a single pinhole, there are probably others that will be coming, Copper pipe is simple to replace with some essential soldering skills, nevertheless call a plumber if in doubt. I would remove the defective area and inspect the inside carefully to figure out the scope of the corrosion and how much should be replaced.


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