Take a set of pliers and rotate the expansion fitting a few degrees to help is seat on the fitting. Hit the joint with some heat via heat gun or hair dryer to help it shrink. For reference, I am working in a basement that is uninsulated (temp down there is probably 10deg warmer than ambient). General temps as of recently have been highs in the Then make a couple of vertical cuts of the pipe inside the hub. With a torch begin heating the pipe inside the hub. Heat slowly. Heat and soften the entire pipe. Work a flat bladed screwdriver between the pipe and the hub and separate the two. Shouldn't be that difficult because there can't be much if any glue in the joint. Harold, How to fix a leak in PEX pipe. What to do when PEX pipe is leaking. PEX pipe leak repair video.PEX Pipe Crimping Tool: Use the bleed valve to ensure the radiator is empty. Remove the radiator valve coupling nut or the union nut from the leak site. Wrap PTFE tape around the olive (on the tail) or the pipe joint where it connects to the water pipe. Replace the nut and tighten it using a spanner or wrench. To solder, you need clean pipe, pipe cleaner (flux) and even heat. If the heat on the fitting and pipe is uneven, the solder will not flow all the way around. Whoever did this joint needed more even heat to get the solder to flow easily. Clean the pipe and fitting, Flux pipe and fitting. This is for beginners that have soldered a pipe but not been successful in soldering the joint correctly causing the joint to leak. It's an easy fix once you Turn off the water supply. Locate the source of the leak. Apply plumber’s tape to cover the leak. Wrap the plumber’s tape around the pipe several times, until it’s fully sealed. Apply epoxy paste to any spots in the pipe that are still leaking water. Leave this to dry for 20-25 minutes. Pipes can be the wrong size, putting pressure on the joint at the connection. And that is where the leak can occur. P-trap clog. When there are clogs in your drain pipe, it can put extra pressure on the joints and pipes at the connection point. If your sink is having issues draining, be on the lookout for leaks as well as they often come in tandem. PTU2hA7.