Abstract: A sheet is provided which can be applied to a planar base and onto which floor boards or tiles can laid, wherein the sheet comprises adhesive strips on its lower and upper sides. The adhesive strips are suitably applied in the longitudinal direction of the sheet. In an preferred aspect, two layers are fixedly connected to one another, a top layer comprising a foamed plastic having a high coefficient of sound insulation and a bottom layer comprising a vapor-tight material and an edge formed by a protruding bottom layer which may be provided on one longitudinal side.