Abstract: Wood-based flooring systems with click-type interlocking joint systems include a protective film system covering the contact surfaces of the click system. The protective film system includes one or more sheets of a material with low moisture transmissivity and a low coefficient of friction. In this way, the contact surfaces of the click system are protected against undue humidity absorption and frictional rubbing to thereby avoid squeaking after installation. In some embodiments there are four film sheets covering the entirety of all four click surfaces, in others there is one film sheet covering the entirety of all four click surfaces, in others there is film covering the entirety of only the two longitudinal click surfaces, in others there is film covering the entirety of only the two tongue click surfaces, and in others there is film covering only the contact surfaces of the click surfaces.

Abstract: Wood-based flooring systems with click-type interlocking joint systems include a protective film system covering the contact surfaces of the click system. The protective film system includes one or more sheets of a material with low moisture transmissivity and a low coefficient of friction. In this way, the contact surfaces of the click system are protected against undue humidity absorption and frictional rubbing to thereby avoid squeaking after installation. In some embodiments there are four film sheets covering the entirety of all four click surfaces, in others there is one film sheet covering the entirety of all four click surfaces, in others there is film covering the entirety of only the two longitudinal click surfaces, in others there is film covering the entirety of only the two tongue click surfaces, and in others there is film covering only the contact surfaces of the click surfaces.