first fix plumbing for kitchen

markyyyyyy · 6 Feb 2021

I am about to start my first fix plumbing.

I will need hot and cold feed for taps
cold feed for outside tap
dishwasher/WM supply

Is there a point at which it's best to bring the pipes into the cupboard behind sink?
Do most people bring pipes in at the middle of the unit, or to one side? Is it best to just put an iso valve on the hot and cold feed for now and then do more pipework once taps are in?

i am going to drill the hole for waste pipe once the kitchen sink is in, so i can drill a more accurate hole once kitchen sink waste (and insinkerator) is installed

Any other tips?

ktuludays · 6 Feb 2021

If you can access them later then bring into room and cap off or fit an iso. Then do 2md fix when you know where they are gonna be needed, when units are ready to go in.

markyyyyyy · 6 Feb 2021

I know where the units are going to be going, i've put a line on the wall where the sink unit will be. At the moment the hot and cold taps are near the boiler, which are only about 20cm to the right of where the sink unit will be.

I could possibly bring the pipes across a further 40cm so they'll be coming into the units (from backpanel) approx 20cm across? I could put a stop end on, and once sink and taps are in i can adjust as required?

JaimieH · 6 Feb 2021

I like to bring in all pipework low down into units, usually aiming for hot and cold to be directly below where taps will be.

TimboTwo · 7 Feb 2021

I did such a nice job, brought the pipework up in the corner unit,

and then found that the pullout unit for the corner needed to go right where those pipes came up. Had to cut them out and bring them up in the sink unit.

TimboTwo · 7 Feb 2021

ktuludays · 7 Feb 2021

markyyyyyy said:
I know where the units are going to be going, i've put a line on the wall where the sink unit will be. At the moment the hot and cold taps are near the boiler, which are only about 20cm to the right of where the sink unit will be.

I could possibly bring the pipes across a further 40cm so they'll be coming into the units (from backpanel) approx 20cm across? I could put a stop end on, and once sink and taps are in i can adjust as required?

If you know where sink unit is going bring them to there and leave at low level until unit is dry fitted.

markyyyyyy · 7 Feb 2021

Hi, thanks for the replies

Currently, the cold feed is 30cm above current floor level, and hot feed is 50cm above floor (as can be seen in pic with stop ends on)

The edge of the sink cabinet will be just to the right of the cable coming out of the wall

Is it best to just keep them at this level and bring them across to where the sink unit will be and pop an elbow on and cap them off for time being?

ktuludays · 7 Feb 2021

I'd keep them at floor level and then bring up.

markyyyyyy · 7 Feb 2021

ktuludays said:
I'd keep them at floor level and then bring up.

So as per my pic above, would you drop the cold and hot feed towards floor and then bring them back up?

JaimieH · 7 Feb 2021

Just extend cold feed across and bend hot feed down until at the same height (hot on left and cold on right). Bend pipe or use elbows to bring pipework into base unit and fit isolating valves. Carry on when kitchen is fitted.

ktuludays · 7 Feb 2021

markyyyyyy said:
So as per my pic above, would you drop the cold and hot feed towards floor and then bring them back up?

They look OK where they are

Madrab · 8 Feb 2021

Depends on where you want to place any shelf in the unit.

Move them along and bring the cold up to meet the hot and then put and elbow on them both and add more pipe so there is tail on each pointing out towards the room with a cap on each. Then as the unit is being moved back, cut a hole where the pipes will fit through, do the same for the sink waste. Fit the carcase then cut and elbow the supplies up with an ISO on each ready for the sink, adding any tee's for appliances or outside tap etc.

ETAF · 8 Feb 2021

you may want to think about a check valve/non return valve for the outside tap

markyyyyyy · 8 Feb 2021

eta said:
you may want to think about a check valve/non return valve for the outside tap

I have one built in to the tap

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