What Is Acclimatisation?
Written by James Walker · Last reviewed 16 August 2026
James Walker has 2 degrees in construction (BSc (Hons) Building Surveying · MSc Environmental Design of Buildings) and an extensive background in issue resolution, resolving over £4 billion of consumer issues.
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Acclimatisation is leaving flooring material in the room where it will be fitted, in normal living conditions, so it adjusts to the temperature and humidity before installation.
Why it matters
Wood and laminate absorb and release moisture. A pack delivered from a cold van or an unheated warehouse is at a different moisture content from your living room, and it will change after fitting.
Fit it immediately and it moves afterwards, gapping in dry conditions, buckling in humid ones.
How long
It varies by material and manufacturer, and the manufacturer's instructions are what a warranty claim is judged against. Solid wood generally needs longer than engineered board or laminate.
Ask what the manufacturer specifies and whether the fitter is allowing it. A fitter who wants to deliver and lay on the same day is saving a visit, not doing you a favour.
Conditions matter too
Acclimatising in an unheated room in a house mid-renovation is not acclimatising to how the room will actually be used. Heating should be on and running normally.
On a new screed or fresh plaster, there is a further issue, both hold significant moisture, and flooring laid over them too early will fail regardless of acclimatisation.
How it works
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