Changing pipework for new sink / water supply

[Rowly]

Hi all ! advice needed please, i am installing a new sick & taps & i need to move the pipework for the hot water supply, a old isolator valve is jammed solid so if can i turn off the cold water supply to the combi boiler will this do the same job ? also would i have to turn the boiler off first ? probably a silly question ! but on a zero hour contract with little work so can't afford a plumber to do a simple job that if the valve was not jammed i could do my self, any advice appreciated.

 

[Rowly]

That's a sink not sick lol

 

[CJRatch]

If as you say its a combi boiler turn the mains cold feed off followed by the boiler then open all taps which the pipes feed and you will be fine to adjust pipework.

 

[Rowly]

Thanks for the advice !

 

[CJRatch]

Also worth mentioning if your adjusting hot and cold keep any dead legs to a minimum. None at all would be best.

Have a search for pipe dead legs if your unsure.

And always keep your hot pipe runs above your cold when you can.

All bases covered.