I came home to find water dripping from the ceiling! After turning off the water supply I looked in cupboard housing the immersion heater but I could not find the leak - other than what appeared a leak from the immersion heater. The immersion heater is a tribune premier by IMI Water Heating and seems to be leaking at the seems. Is this normal for it to leak from here or should I investigate further? What could have caused it to suddenly leak after 18 years? Is it possible to replace this easily? As IMI have gone insolvent what alternatives are available and how much is this likely to cost or can I do it myself? Thank you all replies in advance.