Hmmm, not sure how fitting a non-return valve will help. Surely that would just stop the water going back down the pipe. I am concerned with the temperature of the water coming up.
Thanks.
Hi,
I moved into my new-build house in Sept '07 but started to experiencing problems with the temperature of the water coming from the showers last winter. No matter how far I turn the temperature dial I can only get luke warm water - just bearable to have a shower in!
I have a Glow-worm...