20/08/2026
Have you ever heard a loud bang after turning a tap of and wondered what that is?💥
Its called a water hammer, and is caused when a tap, toilet valve or washing machine valve shuts quickly, stopping the flow of water and leaving it with no where to go.
That sudden stop creates a pressure surge, which travels through the plumbing system and can cause the pipes to vibrate or bang.
Occasional noise isn't necessarily a major issue, but persistent or severe water hammer shouldn't be ignored. Repeated pressure surges can put extra stress on pipework, fittings, valves and connections. A plumber can investigate the cause and determine whether the system needs things such as pressure adjustment, pipe securing, valve replacement or a water-hammer arrestor.