Abstract: The invention refers to a method of floor laying and underlay and surface material for this. According to the invention a coating of fiber flock on the underlay as well as on the underside of the floor surface material is utilized. Hereby is achieved partly that the need of glueing of floor material is eliminated and partly to provide a floor underlay that gives smoothing out, noise suppression and insulation as well as a fixing underlay for various floor materials so that these can be laid in larger or smaller portions and remain on site but simply can be adjusted when required.