Banging or hammering when taps are used
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Most likely cause & what to check
This is almost always "water hammer" — a pressure shockwave caused when water flow is suddenly stopped.
Check all visible pipe clips — loose pipes bang against joists or walls. Secure with new clips.
Wrap foam pipe lagging around pipes where they pass near timber.
Slightly reduce mains water pressure by turning the stop tap a quarter-turn clockwise.
If severe, fit a water hammer arrestor (£15–£30) on the rising main near the stop tap.
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