Why is there a gap between skirting board and floor?

We've had the floor replaced but why is there now a gap between the skirting board and floor?

Asked by Everson on 13th Dec 2025
Expert Trade Answers
"The flooring should go under the skirting ideally. So normally the flooring goes on then the skirting after. If there is a gap under this it's due to the floor not being flat. Either the skirting should have been shaved to sit flat or silicone along the bottom.
If skirting was in situ it depends on the type of flooring. Laminate requires another small skirting to hide the expansion gap. Carpet should be tucked under. Tiles do stop short of skirting if the skirting is too low to squeeze under so it requires a silicone normally matched to grout colour to fill the gap but still allow for expansion of the tile"
Answered on 13th Dec 2025 - Member since Apr 2023 - report
"The gap allows this movement without buckling.

The skirting board is installed to cover the expansion gap, not sit tightly on the floor."
Answered on 13th Dec 2025 - Member since Oct 2018 - report
"It’s really difficult to send 100% of the new floor under every bit of skirt so a general practice is to remove the skirting board and reinstall after. This process will usually only be done for an agreed extra cost."
Answered on 13th Dec 2025 - Member since May 2025 - report
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