Usually you will not hear this type of water leak.
Water cistern leaking.
Apply this salt water with a brush onto the entire cistern after the final coat is completely dry and hardened.
Then rinse well and let the coating dry.
The first place to check is the plumbing pipes above the water heater.
To remove any residue or excess product and to cure the coating prior to filling mix 2 pounds of table salt into 5 gallons of clean water.
This will seal the cracks and help prevent the cracks from spreading.
If age and deterioration is the cause of your leak you will need to call a professional plumber to replace your water heater.
Use a trowel to smooth out the cement over the sides of the cracks.
However if it s at loft level and protrudes from the eaves of the roof then it could be coming from your cold water or central heating feed and expansion tank.
If the leaking pipe is at ground or first floor level then it s likely to be your bathroom overflow pipe dripping which will be coming from the toilet cistern.
A drip from above can easily leak down on top of the water heater and even work its way down the insulation and make it look like the leak is coming from the tank itself.
The leak may actually be at the top of the water heater and simply running down through the body of the heater before escaping at a lower level.
Allow the cement to dry for 24 hours before filling the cistern with water.
This wastes water and can get worse over time.
Fix it asap to avoid water on floor.
Use a caulk gun filled with a slightly watered down cement mixture to pump cement into any cracks in the cistern walls.
Uncoated cistern in barbados.
Check the plumbing pipes above the water heater using a stepladder if necessary.
As discussed above when sediment builds up in the bottom of a water tank for years and years it will eventually corrode through the bottom of the tank and begin to leak.
Not only can a leaking cistern cause expensive water damage in your bathroom but it will increase your utility bills by driving up water usage as well.
It is when the toilet is done flushing and is quiet when you can visually look into the toilet bowl and see a little bit of water running into the bowl.
A cistern that s leaking from underneath should be looked at as soon as possible.