Replacing basin waste

31 Mar 2013
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United Kingdom
Hi, I installed a new sink in my bathroom and used the waste which came with the tap. It leaks between the unglazed underneath and the rubber seal. Rather than mess about with silicone I want to replace the waste with one which has a tapered seal which sits underneath.

As the plug hole has been siliconed in place, I may need to change it to the new one, how best am I to break that seal between the plug hole and the basin glazed finish?

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Just swap the under parts (nut and washer) with a basin mate seal kit (larger tapered rubber washer, plastic washer and nut).

But to break the sealant isn't difficult at all. Wiggle-waggle and twist is all that's needed, usually (use thick gloves, the threads are sharp).
I'm hoping I can just swap the under sink parts, but if the plug hole needs a recentre, then I'll have to get it off.
Silicone isn't the strongest of materials, but if you undo the retaining nut carefully and avoid disturbing the waste, then a Basin mate should just fit straight on with a bit of persuasion. Ensure mating faces underneath are clean before fitting the cone washer.
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i have used the screwfix one

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