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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Plumbing Questions >> Island sink https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1161942007 Message started by Dday on Oct 27^th, 2006, 10:40am

Title: Island sink
Post by Dday on Oct 27^th, 2006, 10:40am

Hello People,

I'am thinking of installing a island sink with the worktop and a breakfast bar which we have the space.
How would i go about connecting and the connections needed to the waste underground bearing in mind that the floor will be underfloor heated,concreted then tiled, also how would i run the water services to the unit?
Also the concrete floor has been taken up so will be accessing the water pipe so how far down will that go so i can re-route it?

Hope someone can give recommendations and advice.

THX

Title: Re: Island sink
Post by jasonB on Oct 28^th, 2006, 11:52am

If you have sufficient fall then the waste can be done in solvent weld waste, make sure you leave rodding points at either end. If you dont have the fall then Saniflo make a pump to suit.

Hot and cold would be best run in plastic to avoid joints under the floor though properly protected copper will be OK.

Jason

Title: Re: Island sink
Post by thescruff on Oct 28^th, 2006, 2:37pm

Domestic water has to be accessable, in a duct or conduit.

The waste is best run through the subfloor in the the drain externally, I would say a minimum 75 mm plastic is best then convert to 50mm when it exists the floor.

Gas will present its own problems if it applies.

Title: Re: Island sink
Post by Dday on Oct 28^th, 2006, 11:32pm

Thanks for your replies.

The waste from the sink i'am going to run straight to the 110mm pipe which is located about a foot away which i have exposed. So my plan is to add a bend so that it then runs under the unit and then raise it so that it is about an inch above the surface of the concrete then tiled floor. I have purchased a rubber bung(only way i can describe it) 1100mm that plugs into the pipe and seals so that you can connect a 40mm pipe or 32mm.
would you think that would do it? (if you get the picture ) :-?

Title: Re: Island sink
Post by thescruff on Oct 29^th, 2006, 7:21am

You cannot go down into the floor and come back up again, without giving yourself big problems later.

Title: Re: Island sink
Post by Twobarrows on Oct 30^th, 2006, 12:44pm

>I have purchased a rubber bung(only way i can describe it) 1100mm that plugs into the pipe and seals so that you can connect a 40mm pipe or 32mm. <
That's one hell of a bung :-D

Title: Re: Island sink
Post by Dday on Oct 30^th, 2006, 6:40pm

Evening all,

The picture is this, the outside wall that the sink is on is to be extended by 3m to the rear. So the drain below on the outside wall that the sink water and washer runs into will be in the middle of the new kitchen so i've dug down and along the pipe to direct it towards and up via a trap to the island with about 1inch above the floor with the reducer on top to connect the 40mm sink waste.
What i will be using is called a 32mm/40mm reducer flexible cost me about a fiver

Hope that's cleared things up abit. ;)