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Discuss Is there a reason drain would be loose fit to soil stack? in the Bathrooms, Showers and Wetrooms area at PlumbersForums.net

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Hello

full disclosure, I am a DIYer.

When reinstalling a sink after having it out to refloor, the waste pipe came disconnected from the soil stack.

On inspection it seems to be a solvent weld fitting, but doesn't seem to have been solvent welded. It has been like that since the house was built 15 years ago with no apparent leaks.

is there a good reason it wouldn’t have been, or should I solvent weld it back on?

pic of the soil stack fitting attached.

thanks in advance

chris
 

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Looks like a cut bit of pipe (needs deburring) connected to a solvent-weld socket on the pipe you have removed? Solvent weld fittings should always be glued. Perhaps it was a primitive method of allowing the pipe to be removed to clear potential blockages?
 
Looks like a cut bit of pipe (needs deburring) connected to a solvent-weld socket on the pipe you have removed? Solvent weld fittings should always be glued. Perhaps it was a primitive method of allowing the pipe to be removed to clear potential blockages?
Hi Ric

Thank you for the reply.

Yes a solvent weld fitting I think - see additional picture attached.

On closer inspection it looks like it may well have been leaking all that time… a lot of gunk on the end of the connection - better picture attached.

Presumably correct course of action would be to solvent weld on, or do you think I different fitting type?

Would be a rubbish method for deblocking anyway, as it is boxed in! I had to cut some extra out to get to it, which is fine as we have raised the floor and will all be hidden by new boxing anyway.

Thanks

Chris
 

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On inspection it seems to be a solvent weld fitting, but doesn't seem to have been solvent welded. It has been like that since the house was built 15 years ago with no apparent leaks.
Joints in drains should be airtight and proved with a pressure test. You've just found some sloppy workmanship; there was plenty of it around in 2006.
 
I used to do commercial buildings where everything was solvent weld.
Over the years I've found Solvent joints not glued and not leaking after many years.
I've found plenty of solvent joints with some glue that pull apart easy.
Also some solvent joints that had clearly been leaking from day 1 of install and some had self sealed with grease.

Re the joint, Yes it needs glueing as it's almost a guarantee it'll leak now if you don't. (Mr Sod or Mr Murphy will confirm that)
 

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