I live on a farm. Both hot and cold water are supplied from the bore hole. There is a gass heater for the hot water. My shower has separate hot and cold taps. Both taps work just fine on their own, but when I try to adjust the temperature by turning on the hot or cold tap, there is a loud hammering noise at a certain point. Beyond this point the hammering stops and there is only cold water. The bath and kitchen mixers work perfectly, as does the shower in a cottage next to the main house, which has the same water supply. What must I do to have a normal shower?

You may have a loose washer on the hot side. Turn main water off, and dissasemble the hot side of the faucet. There is most likely a flat rubber washer on the end. If this is loose, it will create a hammer sound, also would explain loss of hot water when cold water is on. Please let me know what you find. Also brand and model of faucet would be helpful.

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Originally Posted by mygirlsdad77

you may have a loose washer on the hot side. turn main water off, and dissasemble the hot side of the faucet. there is most likely a flat rubber washer on the end. If this is loose, it will create a hammer sound, also would explain loss of hot water when cold water is on. Please let me know what you find. Also brand and model of faucet would be helpful.

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Thanks for the advice. I too was so sure this was the cause of my problem, but on ismantling the ta (faucet) I found it all in good working order. It is a Cobra brand tap. Thanks again for your advice and if you have any further thoughts, I would be very grateful for your input.