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Especially at night, when the temperature drops to its lowest point and humidity levels fall, your house actually shrinks slightly.
All of the building materials making up your house – concrete, plywood, bricks, glass – all expand with rising temperatures and contract when the temperature drops.
These building materials expand and contract at different rates, so cause friction by rubbing against each other, sometimes causing a popping sound.
However, if you hear a loud pop, or a gurgling sound, you should not ignore it: this could be a sign of burst pipes.
The winter is the most common time for frozen pipes in the UK, and if frozen pipes cause pipes to burst, it can be a homeowner’s worst nightmare.
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