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How to fit a waste outlet

RogerS

RogerS

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Got this waste outlet. I am assuming that the washbasin is sandwiched between the two conical washers (orange arrow).

IMG_20180101_115124.jpg

But what stops the water running down the thread and past the nut?

'cos it does. :evil:
 
Throw both of those conical washers away, buy some plumbers mait, roll a sausage of PM, put it on the underside of the flared lip of the waste, push the waste into the basin, run another sausage of PM around the waste where it exits the basin, putthe flat plastic washer over the thread & then tighten the whole thing up with the plastic nut.

DON’T use silicone mastic


https://www.screwfix.com/p/evo-stik-plu ... GwoddMAKKg
 
Doug":2egy2tvg said:
Throw both of those conical washers away, buy some plumbers mait, roll a sausage of PM, put it on the underside of the flared lip of the waste, push the waste into the basin, run another sausage of PM around the waste where it exits the basin, putthe flat plastic washer over the thread & then tighten the whole thing up with the plastic nut.

DON’T use silicone mastic


https://www.screwfix.com/p/evo-stik-plu ... GwoddMAKKg
Click to expand...

:text-+1: - Rob
 
Doug

Do you reckon one can use Plumbers Mait to seal a bath waste (when you cannot use the black rubber washer that normally goes between nut and bath because the waste trap thread length is not long enough. Bloody designer bath...say no more.)

In other words, there is just the nut and PM underneath the bath.
 
You're not going to get enough pull between the bit above the bath and the bit below I wouldn't have though. Sounds like a recipe for a leak to me. I would be trying to get hold of a few more washers to pack it out...
 
TrimTheKing":3alo4z2j said:
You're not going to get enough pull between the bit above the bath and the bit below I wouldn't have though. Sounds like a recipe for a leak to me. I would be trying to get hold of a few more washers to pack it out...
Click to expand...

I don't follow you. It's effectively a double-skin at the bottom of the bath.
 
TrimTheKing":3cakbonl said:
You're not going to get enough pull between the bit above the bath and the bit below I wouldn't have though. Sounds like a recipe for a leak to me. I would be trying to get hold of a few more washers to pack it out...
Click to expand...

I don't follow you. It's effectively a double-skin at the bottom of the bath.

IMG_20180306_130105.jpg

IMG_20180306_125952.jpg

That bottle trap only just tightens up enough but to do that I've had to remove the black rubber washer that should go between nut and bath.
 
Ah okay, my misunderstanding, I thought the thread didn't run high enough up to the bottom of the bath for the nut to tighten against!

In your case then yes I would thing PM would be fine there, it's just a putty doing the same job as the washer. Only thing to be wary of is whether PM degrades/dries out over time as it might need a renewal every now and then.
 
Yep, I make most wastes in with plumbers mait, you could do with a plastic washer between the bath & the lock nut like you did on the basin. If you’ve not got one that size you could cut one from a plastic lid.
 
Doug":1j0g2qoj said:
Yep, I make most wastes in with plumbers mait, you could do with a plastic washer between the bath & the lock nut like you did on the basin. If you’ve not got one that size you could cut one from a plastic lid.
Click to expand...

I'd love to put in a plastic washer but there simply is no spare thread left.
 
What about making one out of the side of a plastic 4 pint milk carton? That’s only about half a mil thick and would give you the washer you need without losing thread.


Sent from my iPhone using Tapatalk Pro
 
You can cut a little off the nut on the trap which will ease things just cut it as square as possible
 
Thanks guys.... :eusa-clap:

Several good ideas there.
 
Can I get away with not putting in a thin washer ? Just using PM ?

I'm struggling to understand how anyone can claim to fit one of these CoS's.

"Any P trap ..McAlpine etc..should be OK" said the support person at Clearwater Baths

So I got one. Same problem.

Not only that I noticed that the slot in their waste doesn't even coincide with the integral bath overflow.

IMG_20180307_140418.jpg
 
Well, it's in but without any Plumbers Mait. PM was too thick to compress enough so I used Plumbers Gold. I'll let it dry overnight and then see what's what tomorrow.

I don't have a spanner large enough for that nut. Managed to tighten it up enough with two hands but if it needs to come out again, no idea what to do. :(

I hate messing about with bathroom and kitchen waste pipes.
 
Interestingly I drew a blank trying to find a bath waste - slotted - but without any tubes to an overflow (if you get my drift). This bath has the overflow integral to it whereas most other baths have a separate hole up the side and a tube in the waste outlet that connects back down to the waste.
 
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