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Discuss Help! Sealing a waste pipe in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Apologies for the basic question but what would I use to seal the following [attached]?

We've had drips coming from our bath for the last few weeks and haven't been able to identify the source. Last night I struck pay-dirt.

Cheers,
Matt

IMG_20181008_214123.png
 
Looks like it unscrews from the top
 
Thank you chaps! Is it easy to get that piece out?
The top will probably be screwed through to the bottom but there will probably be a lot of sealant between the top and the bath and between the bottom and the bath. In theory they should seal with the rubber gaskets but they nearly always need sealant as well. You might need a bit of patience and a Stanley knife to get it off.
 
Thanks for all your advice here :)
Starting my shopping list with bath waste. Which sealant would you recommend? I take it would be different to the one I sealed my floor with.

I use good quality sanitary silicone sealant, Nemesis, Dow 781, Everflex 500 white or clear, you'll need paper nearby at least or ideally Wonder/Soudal/Tygis Wipes.

Make sure you make a good CONTINUOUS bead around both sides of the fitting, not too much and not to little - any gap and the water WILL get through.

ATB.
 
I use good quality sanitary silicone sealant, Nemesis, Dow 781, Everflex 500 white or clear, you'll need paper nearby at least or ideally Wonder/Soudal/Tygis Wipes.

Make sure you make a good CONTINUOUS bead around both sides of the fitting, not too much and not to little - any gap and the water WILL get through.

ATB.
Thanks Jim! Got myself some Everflex and will tackle it later on. You guys have been invaluable.
 
Sorry to disagree with my esteemed colleagues.

I would NOT use silicone. Use Plumbers Mait.

It does not rely on 'solidifying' so is far more flexible than silicone and accommodates far more movement through temp variation because it 'self heals'.
 
Sorry to disagree with my esteemed colleagues.

I would NOT use silicone. Use Plumbers Mait.

It does not rely on 'solidifying' so is far more flexible than silicone and accommodates far more movement through temp variation because it 'self heals'.
Showing your age there mate. :D:D The problem is most instructions for wastes now state to use silicone.
 
Showing your age there mate. :D:D The problem is most instructions for wastes now state to use silicone.

You know W, I don't care :rolleyes: Oddly, what has always truly driven me is to do the best job I can under the circumstances. All too often silicone can be slightly old or the surfaces slightly contaminated. With Plumbers mate neither of those things matter a jot. I never once had a call back for a waste I'd PM'd in but had a couple that were siliconed. One three times before I discovered it was contaminated and had to be chemically cleaned before the bl00dy silicone would seal to both surfaces. Never again :D
 

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