When I turn on the hot water the pipes are making a creaking/clicking noise. I have lived in my house for over 2 years and this noise only started about 2 months ago. It wasn't much at first but now it's a joke.
The noise is apparent for cold water too but definitely not as much.
Does anyone know what is wrong and what can be done?
It is probably expansion and contraction of pipes
even cold water pipes move a bit. They are usually laying adjacent to hot water or heating pipe so get warm and expand. When you run cold water in bathroom it suddenly gets colder and cotracts.
Cost driven heating works would not usually include below first floor pipe lagging or felt pads between pipes and joists.