What it is
Particleboard (yellow-tongue) flooring that moves when you walk on it because it isn't glued or fixed properly.
Why it matters
Once carpet or tiles go down it means squeaks and cracked tiles, and the floor covering has to come up to fix it.
How we check it
We walk the upper floor before it's covered and listen and feel for movement.
The fix
Re-fix and glue the sheets to the joists.
How common it is
Flooring defects (squeaks, bounce, dips) turned up in 10% of homes at handover.
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