To do this you will need to find the main stopcock, which is usually installed under the downstairs kitchen sink (in most homes). So firstly you will need to isolate the water supply to the tap or taps concerned.1). Once you have isolated the water, you should open up all the taps to help drain the system. As soon as the water stops flowing you can close the taps again. Doing this will take the remaining water below the level you will be working at. Do not do this if you have switched off the water to the taps with the isolation valves.Note: If you have isolated the water for the whole house you need to open up all the taps and flush all the toilets to drain the system. Please note water has strange habits and will just hand around, suspended in the pipework while all the taps are turned off, but as soon as a tap is opened or a toilet is flushed, this suspended water will run down the pipework to find you stuck under the sink and may give you a cold shower. Dalston Plumbers always take safety precautions. Should the tap be supplied with copper tails, you should seriously think about replacing them with flexi connectors, as it will save you time. The threads at the base of the taps will be around 10-12mm so you should measure them or take one of the copper tubes to your local plumbing merchant and ask for the flexi replacement. A Dalston Plumber uses different hoses.The usual error with this type of job is to bend flexi connectors too tight. This results in a restriction of the flow of water, making the tap operation even worse. So make sure that you make all the pipework bends gentle and do not let the flexi-hose twist when tightening the connector.
