How to Reattach Drainage Pipe on Outer Wall

[GoldenApples]

Hi all

On the outside of my house, the pipe that removes waste water from my kitchen sink/dishwasher/washing machine has disconnected from the larger, black pipe that feeds it into the sewer system.

The end of the large black pipe still sits flush against the wall, so the leak isn't huge, but I can pull it away if I want to and a small amount of water is dripping down the wall and freezing below.

I feel like it would be an easy fix with some kind of sealant. Can anyone recommend a product that would let me do this, or is that approach not recommended? My problem is that I can't tell how it was originally fixed on, if it ever was, so am a bit of a loss...

 

[Deleted member 267285]

Are you able to post a photo of said pipe?

 

[GoldenApples]

Sure thing. First is its normal position, second is me gently pulling it away:

View media item 105957
View media item 105958

 

[terryplumb]

Pictures are not showing.

 

[Hugh Jaleak]

No pics visible I'm afraid, can you try again?

My Guess would be you've a boss fitting that's come apart, we really need to see which type you have to advise what you need to do to fix it.

 

[GoldenApples]

Does this work:

Normal: https://ibb.co/xstmzP7

Detached: https://ibb.co/8YdLxGx

 

[GoldenApples]

Any better?

 

[terryplumb]

The pipe coming out the wall is too short.
See if ,from inside the property,you can push it out further.

 

[GoldenApples]

I can't push it out any further, no. It's sealed tight against the inner wall with some sort of expanding foam.

 

[Hugh Jaleak]

You will need to remove the nut and O rings from the bend and slip them back onto the pipe through the wall to remake the joint, so it needs to come back through the wall enough to do that at least.

What is the arrangement internally? Maybe wise to look at replacing that section entirely, a solvent weld bend will tuck into the wall neatly and removes any future chance of the joint coming apart and/or leaking.

 

[GoldenApples]

Okay, thanks very much for the info. It sounds like it'll be a bigger job than I expected, appreciate the guidance though!

 

[Hugh Jaleak]

I suspect the reason it's come apart in the first place is the pipework wasn't sufficiently inserted into the bend. Needs to be inserted up to where the line is ideally.