After leveling the floor and cleaning it from debris, a springy damping tape is laid to damp sounds along the walls. So that the seams of the substrate do not fall on the joints of the boards, sheets or roll substrate roll out across the floor across the direction of the laminate lamellas.
It fits only the smooth side up and is interconnected end to end, without overlap. To avoid shearing the substrate, all sheets are fastened together with building tape. If the damper tape is not used, you can put the edges of the substrate a little to the wall a couple of centimeters. In the future, the excess is cut off. In order not to crush the porous material while walking, it is not recommended to lay the entire substrate at once – it is better to lay it out as needed.