A set of essentially identical subfloor panels (1, 1', 1") comprising a joint configured to be glued, wherein the joint comprises a strip which protrudes from a first joint edge at an edge of a panel, wherein the joint comprises an element groove at an underside of an adjacent edge of an adjacent panel and adjacent a second joint edge of the adjacent edge, wherein the strip comprise an element which is configured to cooperate, in a joined position of the edge and the adjacent edge, with the element groove for positioning of the panel relative the adjacent panel in a first horizontal direction and the first joint edge is configured to cooperate with the second joint edge for positioning of the panel relative the adjacent panel in a second opposite horizontal direction, wherein the joint comprises a flexible tongue at an outer part of the strip and a tongue groove below the element groove or a flexible tongue below the element groove and a tongue groove at an outer part of the strip, wherein the flexible tongue is configured to cooperate, in the joined position, with the tongue groove for positioning of the panel relative the adjacent panel in a first vertical direction, wherein the joint is configured for a joining of the edge and the adjacent edge by a vertical motion of the edge relative the adjacent edge, characterized in that a space above the strip and between the element and the first joint edge is configured to be filled partly or completely with a glue before the edge and the adjacent edge are joined, and wherein the joint is configured such that during joining the glue is displaced in the joint and towards an upper surface of the panel and towards a lower surface of the panel, and wherein a flow resistance towards the lower surface is larger than a flow resistance towards the upper surface, wherein a first upper joint edge surface of the first joint edge is configured to cooperate, in the joined position, with a second upper joint edge surface of the second joint edge for positioning of the panel relative the adjacent panel in said second opposite horizontal direction, wherein, in the joined position, a third distance between the first upper joint edge surface and the second upper joint edge surface is in the range of about 0.05 mm to about 0.3 mm. wherein the joint comprises an element groove at an underside of an adjacent edge of an adjacent panel and adjacent a second joint edge of the adjacent edge, wherein the strip comprise an element which is configured to cooperate, in a joined position of the edge and the adjacent edge, with the element groove for positioning of the panel relative the adjacent panel in a first horizontal direction and the first joint edge is configured to cooperate with the second joint edge for positioning of the panel relative the adjacent panel in a second opposite horizontal direction, wherein the joint comprises a flexible tongue at an outer part of the strip and a tongue groove below the element groove or a flexible tongue below the element groove and a tongue groove at an outer part of the strip, wherein the flexible tongue is configured to cooperate, in the joined position, with the tongue groove for positioning of the panel relative the adjacent panel in a first vertical direction, wherein the joint is configured for a joining of the edge and the adjacent edge by a vertical motion of the edge relative the adjacent edge, characterized in that a space above the strip and between the element and the first joint edge is configured to be filled partly or completely with a glue before the edge and the adjacent edge are joined, and wherein the joint is configured such that during joining the glue is displaced in the joint and towards an upper surface of the panel and towards a lower surface of the panel, and wherein a flow resistance towards the lower surface is larger than a flow resistance towards the upper surface, wherein a first upper joint edge surface of the first joint edge is configured to cooperate, in the joined position, with a second upper joint edge surface of the second joint edge for positioning of the panel relative the adjacent panel in said second opposite horizontal direction, wherein, in the joined position, a third distance between the first upper joint edge surface and the second upper joint edge surface is in the range of about 0.05 mm to about 0.3 mm.