thanks for that elthorne.. that sounds very plausible give amount of limescale here in Barking. perhaps the water mains work ( see my last response..) is a red herring after all!!
Will try it. Thank god it doesn't involve rippout out back of shower - took me 4 years to get round to putting...
thanks for the response,
I thought i'd better flesh it out a bit more to be sure of the issue;
When i installed the valve it was fine for a couple of years. Then we started to notice the hot water was luke warm and fluctuating from warm to cooler almost in the same cycle all the time...
Hi mate i have the same issue - also a cross water shower valve and a vaillent boiler. Spooky.
If you have a moment to tell me how your situation was fixed & how much it cost it would help me a lot.
regards,
Dan
thanks for responses.....mains pressure is good , boiler is only 1 year old and in good working order. How risky is going for a plain mixer over a pressure balanced mixer? What are the "undesirable" things they can do under certain circumstances ( and what are the ...certain circumstances) ...