How To Remove A Bathroom Sink Pedestal
Sink and pedestal - getting to u-bend
Sink and pedestal - getting to u-bend
bluest2
Original Poster
3,566 posts
188 months
Wednesday 12th March 2008
Help needed!
I need to replace the u-bend on my bathroom sink today. However it is more or less enclosed by the sink pedestal. I'm not certain on the way forward here, how do i get to the u-bend?
At first i thought the sink would be screwed to the wall but i can't see any fixings, where would they be hidden? If i remove the pedestal will the sink fall to the floor? The pipework wouldn't support it. Also, the pedestal curves up behind the sink bowl slightly, so i'm not sure how I'd get it out from under there anyway, maybe slide it sideways?
This is obviously an 'ask your Dad' type question, but he's at work, so hopefully PH can be my surrogate father and come to the rescue........
Wednesday 12th March 2008
If you really can't reach the u-bend through the back of the pedesatll , then you will need to remove the sink. It will most likely be screwed to the wall with a screw either side 'underneath'.
Then you will need to undo the water pipes attaching the taps.
Then undo the (probably) compression joint at the bottom of the u-bend.
Then lift the sink away, with the u-bend attached to the bottom of it.
I'm just doing the reverse, e.g. fitting a sink, it's not rocket science just get stuck in!
bluest2
Original Poster
3,566 posts
188 months
Wednesday 12th March 2008
Is a bit of a catch 22. Can't lift the sink because it's connected to the u-bend. Can't disconnect the u-bend because I can't get the pedestal out.
I've been under the sink with my torch, doesn't appear to be fixed to the wall anywhere. It is possible to wobble the sink slightly so may not be attached to the wall at all. It's an old copper u-bend so there's no flex in it either.
Wednesday 12th March 2008
My approach with these things is that it was originally installed by a knuckle-dragging Neanderthal. So if he can assemble it, you can disassemble it.
Extreme violence can also be useful if all else fails.
CedA4
2,538 posts
226 months
Wednesday 12th March 2008
Your sink WILL be mechanically fixed to the wall, generally each side towards the top of the rear plate/flange/downstand, you should be able to see these from the underside looking upwards. Alternatively, it should be possible to ease the sink upwards - "gently" to free the pedestal from underneath, to gain access to the waste pipe. If it is a old copper waste you may feel the need to replace the waste pipe completely including the plug hole/trap & pipe to the connection from wall to give the unit some more life so to speak.
bluest2
Original Poster
3,566 posts
188 months
Wednesday 12th March 2008
Simpo Two said:
My approach with these things is that it was originally installed by a knuckle-dragging Neanderthal. So if he can assemble it, you can disassemble it.
Extreme violence can also be useful if all else fails.
It's funny you mention that, I was musing as to whether it would be a good idea to just saw the wastepipe off close to the u-bend. Then the sink could then be lifted. I'll let you know.
CedA4
2,538 posts
226 months
Wednesday 12th March 2008
bluest2 said:
Simpo Two said:
My approach with these things is that it was originally installed by a knuckle-dragging Neanderthal. So if he can assemble it, you can disassemble it.
Extreme violence can also be useful if all else fails.
It's funny you mention that, I was musing as to whether it would be a good idea to just saw the wastepipe off close to the u-bend. Then the sink could then be lifted. I'll let you know.
what about the two feeds for the water supply ??
bluest2
Original Poster
3,566 posts
188 months
Wednesday 12th March 2008
CedA4 said:
Your sink WILL be mechanically fixed to the wall, generally each side towards the top of the rear plate/flange/downstand, you should be able to see these from the underside looking upwards. Alternatively, it should be possible to ease the sink upwards - "gently" to free the pedestal from underneath, to gain access to the waste pipe. If it is a old copper waste you may feel the need to replace the waste pipe completely including the plug hole/trap & pipe to the connection from wall to give the unit some more life so to speak.
Definitely no fixings visible, unless it on some brackets (bit like a radiator) that are screwed to the wall first and then hidden by the sink. I tried easing it up already but it wont budge, probably due the chunky copper waste fittings. It wpould have to come up quite a way to allow the pedestal out. I think cutting the waste will way forward.
Once it's finally off I'll have a look at all the plumbing and see what needs replacing
bluest2
Original Poster
3,566 posts
188 months
Wednesday 12th March 2008
CedA4 said:
bluest2 said:
Simpo Two said:
My approach with these things is that it was originally installed by a knuckle-dragging Neanderthal. So if he can assemble it, you can disassemble it.
Extreme violence can also be useful if all else fails.
It's funny you mention that, I was musing as to whether it would be a good idea to just saw the wastepipe off close to the u-bend. Then the sink could then be lifted. I'll let you know.
what about the two feeds for the water supply ??
I can get in no problems to disconnect those from the taps, the hot is on a flexi as well for some reason.
Ferg
15,242 posts
229 months
Wednesday 12th March 2008
Several things. Least useful first.
Thread title SHOULD read:
Basin and pedestal - getting to trap.
Simpo? You know how to make friends don't you....
More useful.
It sounds like someone who isn't very good at plumbing has stuck your basin in place with silicone sealant or some sort of building adhesive. The best bet IS to lift the basin and pull the ped gently forward until you can work on the trap. Generally the basin will be OK so long as you support it a bit with the ped pulled out. I sometimes rest it on my shoulder when working on them.
The problem you have, obviously, is getting it free enough from the wall...
It sounds like a job for a Stanley knife across the top of the basin/wall joint to free it from silicone and if neccessary a hacksaw blade stuck down the gap to cut through whatever is holding it.
I do have another trick for all this that involves a hole-saw and a faily rare McAlpine Basin Waste, but try this first!!
Wednesday 12th March 2008
Somewhat O/T, but I had to share with fellow PH men the fact that I have just fixed both the hot tap in the kitchen and the hot tap in the bathroom.
Both needed "re-seating" (I think that's what it's called.)
I am man.
I fix.
I make water hot.
And I also suffered a rather nasty broken nail in the process.
bluest2
Original Poster
3,566 posts
188 months
Thursday 13th March 2008
Ok, it all turned out to be rather messy in the end, didn't finish until 11:30 last night. Here's my excuse as to why it took me so long. It turns out the sink was bonded to the wall with silicone, the sink was also attached to the pedestal by a hidden wing nut, that I couldn't see, behind the trap. The copper trap was soldered to the lead waste pipe. The bottom of the sink has been cracked off at some point and repaired with loads of lead and putty, every time I tried to uncrew the trap from the sink , the lead/putty combo tried to break up.
In the end I had to solder a copper pipe back onto the remaining stump of my lead waste pipe which took ages, I then had to seal all round the joint with silicone. I could then attach my new PVC trap to the copper pipe and screw it back up to the lead/putty combo bodge on the bottom of the sink.
If it last until we get a new bathroom in the new year it'll be a miracle. Old Houses 
Thursday 13th March 2008
Ferg said:
Simpo? You know how to make friends don't you....
I hope you're not stooping to lower yourself to that level Ferg!
Let's out it another way - what one man can make, another can undo.
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How To Remove A Bathroom Sink Pedestal
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