Patent ID: 8833026

Claim:
A covering comprising a plurality of panels of a panel material; wherein said panels have coupling parts at least at two opposite edges and arranged to couple adjacent panels to each other; said coupling parts including a tongue and a groove, and locking parts preventing the drifting apart of two of the panels said locking parts including a protrusion on a lower portion of the tongue; wherein the groove is bordered by an upper lip and a lower lip; wherein the upper lip, the lower lip and the tongue are formed at least partially from the panel material; wherein in the coupled condition the tongue, at least with the portion thereof consisting of the panel material, reaches underneath a portion of the upper lip consisting of the panel material; and wherein between at least two of the coupled panels, between the tongue and groove, at least one separately manufactured insert is present, and removable the insert having at least two portions functioning as fixed spacing elements including a first portion between the upper side of the tongue and the lower side of the upper lip, and a second portion between the locking parts, respectively.