fitting waste to a belfast sink


Postby doubledrat » Wed Nov 14, 2007 6:20 pm

hi there

tried fitting my waste to belfast (butler's) sink, but it leaks, so I must have got it wrong!

I had

threaded waste
2x spongy foam looking washers
1 nut for threaded waste

I arranged like this (from top down)

waste
washer
boss green
sink
boss green
washer
nut

should I have used silicone instead of boss green? or boss white instead?

not sure what I did wrong.

because the bottom of the belfast is rough and unfinished, I obviously have to do something special.

any pointers gratefully received!

ta
doubledrat
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Postby htg engineer » Thu Nov 15, 2007 6:27 pm

I would try using putty, this should form a watertight seal.
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Postby bobplum » Thu Nov 15, 2007 8:34 pm

plumbers mate would be what i would use
were the threaded section comes thru the sink i would fill with plumbers mate
i would normally dispense with the top washer and use plumbers mate or silicone
bobplum
Posts: 364
Joined: Tue Sep 25, 2007 7:35 pm


Postby marrtin » Thu Nov 15, 2007 10:35 pm

I always use clear silicone. The rubber ring can seal between the nut and underside of the sink, but doesn't stop seepage through the threads.

Many basin wastes don't use a washer underneath so silicone the porcelain and the first 1/4" of waste thread showing and tighten up. Then smear the excess round to create a perfect seal.

Works every time.
marrtin
Posts: 374
Joined: Fri Oct 26, 2007 6:42 pm


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