External pipe

[Ubiquitous2024]

As I try and solve all the issues caused by our builders, one of them is a leak coming from this. This is the kitchen pipe that runs into the side of a bigger pipe. All I know is that when we bath and let the water out, it runs down the big pipe and then leaks out at the join. I dont think there is a leak whwn water runs out the kitchen pipe but not sure.

They came back to snag today and like most things have just siliconed it. I ran a quick test at the time by letting a small bath out and it still leaks. There were no issues before they installed our kitchen and changed this kitchen exit pipe.

Does it really matter and presumably this is something simple enough to fix?

[LordLoveLength]

Looks like it’s been fitted too low so can’t seal properly because the angle of the black pipe is too big.

[netherfield]

Simple answer get them back out again.

[Ubiquitous2024]

They came today, I don't think they are competent to fix it so will have to get someone else who knows what they are doing to do it. I just wonder if it is worth it, for a small bit of water every now and again that just falls onto gravel.

[Black_S3]

its a pretty awful lazy way of doing it... both could easily be done into a propper straight with bosses rather than using the strap ons with rubber bosses.

[wolfracesonic]

Is the water coming out around where the black pipe enters? If yes, it’s probably caused by it entering at too sharp an angle, as said above; one of these should help, a strap boss bend, It will help level out the pipe.
There should be a rubber bung for the black pipe to go into and hopefully not a load of silicone gobbled in there.

[Ubiquitous2024]

Cheers, just been out to check having let bath out and water running down the pipe, its at the bottom of the grey circular thing as it joins with the vertical pipe.

[sherman]

Is this the sort of thing thats needed?

Gutter Down Pipe Rainwater 40mm Adaptor Connector Kit for 68mm Black Drain Pipe | eBay UK https://share.google/w7gsuBrvp3dg5u4VP

Edited by sherman on Thursday 9th April 23:01

[Ubiquitous2024]

Possibly but the main pipe is big / wide. Much more than the kitchen pipe.

[skeeterm5]

Ubiquitous2024 said:

They came today, I don't think they are competent to fix it so will have to get someone else who knows what they are doing to do it. I just wonder if it is worth it, for a small bit of water every now and again that just falls onto gravel.

That looks like a soil pipe so it won’t be “just water” leaking out.

[smokey mow]

If they used silicone to fix it then it’s not surprising it hasn’t sealed.

Those fittings are designed to be solvent cemented in place. It needs removing fully and then fixing back in the correct way. A solvent welded joint done right won’t leek and will maintain a waterproof seal for many years.

[bennno]

skeeterm5 said:

That looks like a soil pipe so it won t be just water leaking out.

Yep. Agreed.

[RotorRambler]

As above, the angle looks too steep, some solutions above, or get them to reposition it if they can?, although a big hole now in the wrong place on the downpipe!

If the leak is where the boss joins the downpipe, the solvent weld probably failed, maybe the strain of the pipe being rammed in too steeply..

Maybe better off fixing it yourself of get a competent diyer to do it, looks like the workmen is useless if they can’t get that right!

[Ubiquitous2024]

Yes I am not having them back as they have botched and messed up loads of things during our kitchen install. I just wondered how much of an issue this actually was as I am clueless about anything DIY related and this is the second leak caused by them we have had.

In terms of soil pipe / water - I can confirm it is definitely only water coming out, it is the shower and bath escape as you can hear it washing down. I have been out there checking, touching and sniffing at every opportunity, certainly no sewerage or anything else coming out. What confuses me is that it is the bathroom water that is escaping which is just running straight down the vertical pipe. I have no idea what it looks like inside the clip but I presume its natural seepage where a hole has been cut in the side of the pipe.

[Lotobear]

I had exactly this issue at my last house - angle on the entry pipe was causing the connector bung to 'gape'.

I solved it by using a WC flush pipe connector bung and a smear of sealant - much tighter fit, still a bit of a bodge but it worked.

[bennno]

Ubiquitous2024 said:

Yes I am not having them back as they have botched and messed up loads of things during our kitchen install. I just wondered how much of an issue this actually was as I am clueless about anything DIY related and this is the second leak caused by them we have had.

In terms of soil pipe / water - I can confirm it is definitely only water coming out, it is the shower and bath escape as you can hear it washing down. I have been out there checking, touching and sniffing at every opportunity, certainly no sewerage or anything else coming out. What confuses me is that it is the bathroom water that is escaping which is just running straight down the vertical pipe. I have no idea what it looks like inside the clip but I presume its natural seepage where a hole has been cut in the side of the pipe.

That pipe is presumably carrying toilet waste also?

[Ubiquitous2024]

bennno said:

That pipe is presumably carrying toilet waste also?

No, apparently not - it is only ever clear water with no odour that comes out, all I know is that it carries all the bath water out when we pull the plug. There has been no odour of sewerage issues from it, just clean clear bathwater or shower water. It doesn't seem to leak from the kitchen waste either, only when we let the bath out.

[johnoz]

Guessing they did not GLUE the black strap to the grey soil pipe thats why it leaks, silicone wont seal it.

[Little Lofty]

Strap on boss are crap, I stopped using them 20+ years ago. More work to fit but the attached is a far better solution.

https://www.cityplumbing.co.uk/p/plumbright-solven...

[Ubiquitous2024]

Little Lofty said:

Strap on boss are crap, I stopped using them 20+ years ago. More work to fit but the attached is a far better solution.

https://www.cityplumbing.co.uk/p/plumbright-solven...

Thanks, and I guess now the question is how griefy for someone that knows what they are doing (not me) to fit that - presume there has to be a cut made to the soil pipe and then that made to fit etc?