Hundreds of thousands lined the streets of London, waiting up to 14 hours to pay their final respects to the late monarch.
The ancient floors of Westminster Hall were damaged as 250,000 mourners queued hours to see the Queen lying-in-state.
The 180-year-old Yorkstone floor which survived a devastating fire suffered ‘delamination’, a spokesman reveals.
The delamination means the colouring is different to the stone around it.
However, the spokesman played down fears that the damage could be permanent.
“That will blend in over time as it is exposed to the air so as it becomes unnoticeable,” they added.
A House of Lords spokesman said: “As a consequence of the high-level continuous footfall through Westminster Hall during the lying-in-state some delamination to the Yorkstone floor has occurred.
“It has exposed some areas of bare stone that will blend in with the surrounding areas over time. This does not present a structural risk.”
The official lying-in-state period ended at 6.30am on the day of the state funeral.
The infamous queue, dubbed by some “The Elizabeth Line”, after the London Tube line, was closed to new joiners just after 10.40pm on September 18.