What is central heating sludge?

Sludge, or magnetite, to give it its proper name, is a black substance in the central heating pipes made up of dissolved and rusted metal.


It forms when the water in the system reacts with the metal in radiators and pipes. Because sludge is heavier than water, it can settle in radiators and pipework and, if left to build up, it can damage the boiler and the system.

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Why should I get the water in my central heating system cleaned?

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Why are my radiators cold?

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What is central heating sludge?

Sludge or magnetite if left to build up, can damage the boiler and the heating system. Find out everything you need to know about Sludge here...

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