Mould for producing a panel assembly comprising a panel and a gasket, which gasket is adhered to the panel, and extends along at least a portion of the periphery thereof, the mould comprising a first mould part and a second mould part that are formed such that the panel can been closed thereby forming a closed cavity the inner boundaries of which are formed by a first mould surface, a second mould surface and the periphery of the panel, and wherein the second mould part comprises a resilient lip extending along the periphery, the resilient lip being provided for being displaced by an applicator device to provide access to the closed cavity.