Be sure that it is the tank or the pipes coming in and out of it that are leaking rather than other pipework that may be nearby.
Hot water cylinder leaking on roof.
In case if you were wondering these temperature pressure relief valve s too have an age limit when it comes to both productivity and efficiency.
Leaks from electric water heater s heating element gasket.
See the article electric water heater repair and troubleshooting for information on removing the heating element and replacing the gasket.
This pipe allows for the water in the cylinder to expand when it s heated.
It s normal for the overflow pipe on a copper cylinder to drip when your water is heating.
This generally happens in summer when the tank is too hot and the valve activates to release the super heated water from the tank.
There are two possible reasons for your copper cylinder to be causing an overflow pipe to leak.
If the overflow on to the roof isn t too bad just put up with it until you can get help.
Sometimes roof mounted solar hot water systems will leak water from the overflow valve.
What could cause this hot water tank overflow pipe dripping issue.
You will run out of hotwater of course.
The temperature on your thermostat is too high.
Identify the leak from where the leak is actually coming in hot water system an important first step is to determine that the leak is actually coming from your hot water system.
In the meantime if the loss of water on to the roof is bothering you the easiest temporary fix would be to turn off the hot water cylinder at the switch and just let it run.
The most common faults with hot water cylinders can be put down to loose connections faults with the element washers faults with the valve excessive pressure or due to time heat or pressure having a cracked tank.
You can install a pressure booster pump on the cylinder outlet and then adjust the ajax inlet pressure limiting valve for lower head height of water pressure.
This way you have less water sitting in the pipe above the roof but the pump will boost the pressure when you open a tap.
With electric water heaters leaks can spring from the gaskets that seal the heating elements to the tank turn off the electrical power and shut off the tank s water supply.
Its often not economically viable to repair a hot water cylinder if it s reached this stage which is generally 20 40 years for electric low pressure hot water cylinders and five to 20 years for mains pressure hot water cylinder.
