The Boiler Guide, Water Tank in the Loft, and Leak Detection UK are all part of the Screwfix community.

In the loft of properties with a regular boiler, the headers tank is an essential part of an open vented heating system.In this article, we will help you to find the cause of the overflow.We recommend contacting a heating engineer to fix a overflowing tank.What is the tank’s name?The feed and expansion tank is an essential part of an open vented central heating system with a regular boiler.The level of water in the header tank is used to supply water to the central heating system.The loft is where they are located at the highest point of the heating system.It is possible for the cold feed and open vent pipes to be a single pipe in some.Being at the very top of the heating system puts the header tank at risk of a number of problems.Problems with pump over run, faulty coil in the hot water tank, and Ball valve needs repairing are some of the reasons why the tank is overflowing.The important feature of most modern boilers is that they prevent heat from building on the heat exchanger.When the valves are closed, the only place for the hot water to go is up to the tank.The hot water should be able to circulate even when the valves are closed.If the hot water is still making its way to the tank, then it might be set too high.The hot water cylinder has a faulty coil.The coil that hot water passes through is inside the cylinder.As the hot water passes through the coil at the top, its heat is transferred to the domestic water, warming it further, before it exits at its bottom.There is a hole in the coil which allows water for the central heating into the domestic hot water being stored.Rise in water levels can cause the feed and expansion tank to overflow.The yellow or brown colour of the water from the taps will tell you if the coil in the cylinder has been damaged.The unvented hot water cylinder will need to be replaced if this is the case.The ball valve can either allow a full flow of water or prevent it.Water will either be allowed to flow through the hole or not if the valve is turned.If the valve is stuck, the best thing to do is have it replaced to avoid further issues.You can find a local heating engineer.Get a quote to fix your central heating system.There is an overflow pipe that prevents a water container from overflowing.There is a hole at the top of the sinks that prevents water from overflowing onto the floor and a pipe that works the same way.The feed and expansion tank has a float valve which controls the flow of water into it.If there is hot water coming out of the overflow pipe, turn the system off and wait for the water to cool before setting the float valve.The water in the tank is susceptible to freezing during the winter because it is in a loft space that is often cold.The risk of leaks increases when the water in the tank is frozen.The solution is to fit an insulation jacket around the tank.The cost of an insulation jacket depends on the size of your tank.If left, the build-up of brown sludge can cause obstructions which can reduce the efficiency of the central heating and potentially cause the boiler to heat up.The problem of sludge with a brown colour used to be a major problem, but now the tanks come with byelaw 30 kits which include a lid.If you find something in the tank, you can take care of it yourself by: turning off the mains water supply, scoop out the sludge with a bucket, and then refill it with cold water.Don’t disturb the water too much when removing the sludge as it could end up in the overflow pipe.Your central heating system might benefit from a powerflush to clear out any sludge, debris or rust that is blocking the water from flowing properly.If you want to turn the mains water supply off, you need to find the inside stop tap under the kitchen sink, garage or bathroom sink.Once you have found it, turn it off and run the cold water taps around your home to completely drain the system.Should a sealed system be installed?If you’re going to replace your boiler, you might want to consider a sealed system because of the risk of tank overflow.Unlike open vented systems, sealed systems have an expansion vessel that is often fitted into the boiler itself.A sealed heating system can work with regular boilers and other types of boilers.Depending on the size of your home and the demand for central heating and domestic hot water, a heating engineer can recommend the best heating system for you.Using Boiler Guide, you can get free quotes from heating engineers.

In the loft of properties with a regular boiler, the headers tank is an essential part of an open vented heating system.In this article, we will help you to find the cause of the overflow.

We recommend contacting a heating engineer to fix a overflowing tank.

The feed and expansion tank is an essential part of an open vented central heating system with a regular boiler.

The level of water in the header tank is used to supply water to the central heating system.The loft is where they are located at the highest point of the heating system.

After the central heating or domestic hot water is turned off, the boiler continues to pump for a few minutes.The important feature of most modern boilers is that they prevent heat from building on the heat exchanger.

When the valves are closed, the only place for the hot water to go is up to the tank.The hot water should be able to circulate even when the valves are closed.If the hot water is still making its way to the tank, then it might be set too high.

Domestic use of hot water comes from taps and showers.The coil that hot water passes through is inside the cylinder.As the hot water passes through the coil at the top, its heat is transferred to the domestic water, warming it further, before it exits at its bottom.

There is a hole in the coil which allows water for the central heating into the domestic hot water being stored.Rise in water levels can cause the feed and expansion tank to overflow.

The yellow or brown colour of the water from the taps will tell you if the coil in the cylinder has been damaged.

The ball valve can either allow a full flow of water or prevent it.Water will either be allowed to flow through the hole or not if the valve is turned.If the valve is stuck, the best thing to do is have it replaced to avoid further issues.

There is an overflow pipe in the water container.There is a hole at the top of the sinks that prevents water from overflowing onto the floor and a pipe that works the same way.

The feed and expansion tank has a float valve which controls the flow of water into it.If there is hot water coming out of the overflow pipe, turn the system off and wait for the water to cool before setting the float valve.

Being in a loft that is often cold can make the water in the tank susceptible to freezing during the winter.The risk of leaks increases when the water in the tank is frozen.

The solution is to fit an insulation jacket around the tank.The cost of an insulation jacket depends on the size of your tank.

Brown sludge is common in open vented heating systems and if left can cause obstructions which can reduce the efficiency of the central heating and potentially cause the boiler to heat up.The problem of sludge with a brown colour used to be a major problem, but now the tanks come with byelaw 30 kits which include a lid.

Don’t disturb the water too much when removing the sludge as it could end up in the overflow pipe.

Your central heating system might benefit from a powerflush to clear out any sludge, debris or rust that is blocking the water from flowing properly.

To turn the mains water supply off, you need to find the inside stop tap under the kitchen sink, in the garage or in a downstairs bathroom.Once you have found it, turn it off and run the cold water taps around your home to completely drain the system.

If you’re going to replace your boiler, you might want to consider a sealed system because of the risk of tank overflow.

Unlike open vented systems, sealed systems have an expansion vessel that is often fitted into the boiler itself.A sealed heating system can work with regular boilers and other types of boilers.

Depending on the size of your home and the demand for central heating and domestic hot water, a heating engineer can recommend the best heating system for you.Using Boiler Guide, you can get free quotes from heating engineers.