Do several layers of Regupol® / Regufoam® have to be adhered together?

Laying several layers of Regupol® or Regufoam® depends on the requirements for structure-borne noise insulation. If installation in several layers is specified, the insulating materials are laid loose. Several layers are not adhered or fixed to each other. To reduce the risk of leaks when laying the materials in several layers, each layer should be laid offset from the previous one so that the joints are not directly over each other (cross pattern). The joints between the single rolls are fixed with adhesive tape.