EVO-STIK Plumber's Mait Quick Leak Repair Putty 50g

As most reviewers stated it’s useless. One pin hole on a soldered joint, which had been heated too much, and the solder had leaked. I cleaned the area with emery cloth, packed it all the way round the joint. Left it overnight. It seemed watertight, but after a couple of hours it’s weeping, so am I after wasting over £5.00. 😢 (New review) I decided to give it another go. I scraped away the material where it was weeping, leaving enough to bond a fresh layer. It is two days since I applied the fresh layer and so far no sign of any leakage. The pipe is under mains pressure feeding an outside tap, the leak is on an elbow attached to the tap. The pipe and elbow are just about protruding out of a small hole cut into the house wall, which is an extremely awkward place to get at. I’ll give a five star rating, instead of the original one star rating and see what happens.

I used this to deal with a very minor leak from a cold water pipe to a sink. I used tissue paper around the pipe for about an hour or two to check exactly where the leak was coming from, as it seeped out very slowly and tended to dry up on its own at times. In short, I ended up using three packets of this stuff, almost giving up when the leak persisted despite my putting multiple layers on. At the end, I used half a roll of it to cover a small area that still leaked, and that has finally stopped it. I was about to give up and call a plumber. My tips for using it are to turn off the water at the mains and to keep pushing it into the pipe while it hardens It wasn't a cheap or elegant repair, but it did the job and was still cheaper than a plumber. It sets rock hard.

Great wee glue

Did not stop my leak, could not get the pipe dry enough for the paste to stick to it.

perfect .. No issues at all and would use again

I have a dual exchanger heating system (HIU) in my flat and one of the copper pipes is rusty and dripping leaking. While I wait for the spare part which seems to be sold out I needed to do a quick temporary fix. The pipe is hot and I am unable to cool it down so this putty doesn’t work. First of all it all breaks down in contact with the humidity of the dripping, and while you are trying to apply pressure and making sure it does not fall apart suddenly it just turns rock solid. The dripping just accumulates and this doesn’t stop it

Basic epoxy putty easy to use and mix applies easily enough but unable to seal a low pressure leak. In the end this will require a new joint and finding a shut of valve

Worked ok for a short term solutions, smells awful.