
After the first couple of worktops came out I needed to work out how to disconnect the taps to the old sink. This involved turning off both the hot and cold water supplies. First I looked for an isolation valve - sadly there were none so it was a case of turning off the mains for the cold water and draining the tank for the hot. When I started to drain the hot water tank I could hear it refilling again. This meant that it was fed from the cold tank in the loft. Fortunately, there's a tap to turn off the supply *to* the hot water tank to stop it from re-filling.
Once the tank was drained and the mains were off it was quite easy to disconnect the taps and get the last worktop out. At this stage I took out a section of the hot water pipe and installed an isolation valve. This meant that the tap to the hot water tank could be turned back on while we worked.

One weird side effect is that the toilet cistern now overflows. Reading up on the valve that we have - it is prone to getting debris in and that can stop it from turning off the water when the cistern is full. I didn't feel like dealing with this at 23:00 last night so that is the first job for today!

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