Leaking 15mm pipe repair in floor?

[JOEPRO]

I have discovered a leaking pipe underfloor in my utility room. It is from the mains cold water supply. I have removed floor tiles and located the leak right at one side of the door frame.

It should be 15mm copper pipe. I will start breaking up the floor in the coming days to find the leak.

I see solder on repair peices for in situ pipes. Im not sure if the leak will even be on the top of the pipe so may not work.

Dificulty of course being that itll be a fixed pipe within a concrete floor. Any suggestions for what to use to repair it in situ? I see slide on compression repair joints but they would need some movement side to side in the pipes = big cutout to let movement happen. Im hoping for some sort of sliding / expanding repair joint?

 

[roblane65]

Expose the pipe and clean it up Use 2 straight connectors and with a rat tail file file out the ridge in the middle so they will slide fully over the pipe . Cut out the damaged section slide a straight con over each cut end then a new piece of pipe in the middle slide the 2 st cons back half way and solder job done .

 

[Craig-SM]

I would just cut the section out and replace with soldered connectors

 

[Craig-SM]

Expose the pipe and clean it up Use 2 straight connectors and with a rat tail file file out the ridge in the middle so they will slide fully over the pipe . Cut out the damaged section slide a straight con over each cut end then a new piece of pipe in the middle slide the 2 st cons back half way and solder job done .

You can slide connections now

Made4Trade End Feed Slip Coupling

End feed capillary fitting is part of the Made4trade range and manufactured to BS EN 1254-1. This fitting joints copper tube manufactured to BS EN 1057 using solder.It is suitable for above ground hot and cold domestic or potable water services, central heating systems, low-pressure steam...

www.toolstation.com

 

[Dozzer]

You can repair as above.
If the pipes are not in the correct lagging, then it will just leak somewhere else later, thanks to expansion/contraction & corrosion.
One house i renovated and friends house have both had this issue. as the pipes were not covered. just dumped in the the screed

 

[Olderisbetter]

I did a repair on a mains water pipe over the neighbours, the pipe was about 2 inches down in screed with no protection and it lasted a few months then started leaking about 2 feet away, when he has a new kitchen in a few weeks the whole floor is coming up as there are heating pipes in it aswell, I guess back in the day raw pipe in cement based floors was normal, hope you get a repair sorted.

 

[Tim.S]

Copper and concrete really don't play well together or perhaps they play too well together either way they need to be seperated or the react with each other and the copper always comes off worse.

 

[gaz1]

I have discovered a leaking pipe underfloor in my utility room. It is from the mains cold water supply. I have removed floor tiles and located the leak right at one side of the door frame.

It should be 15mm copper pipe. I will start breaking up the floor in the coming days to find the leak.

I see solder on repair peices for in situ pipes. Im not sure if the leak will even be on the top of the pipe so may not work.

Dificulty of course being that itll be a fixed pipe within a concrete floor. Any suggestions for what to use to repair it in situ? I see slide on compression repair joints but they would need some movement side to side in the pipes = big cutout to let movement happen. Im hoping for some sort of sliding / expanding repair joint?

dosnt matter what you use unless you can get that pipe drained your flogging a dead horse in trying to solder it

mains feed being the worst

so only fitting that can do a bad slow leak is compression and you need a slide through compression not a standared compression otherwise you need space to flex the copper pipe to fit onto the other pipe with a trimmed amount taken off

sometimes its easier to fit 2 compression fittings on and cut the bad pipe out but your still flexing that pipe to fit it on