Sound dampening, timber flooring adhesive system. The Sika AcouBond-System consists of the elastic, sound dampening, one component polyurethane adhesive SikaBond-T53 and the SikaLayer-05 foam mat. The Sika AcouBond-System is used to bond 3-ply engineered wood and chipboards (tongue and groove) in new construction and in the renovation of residential, office, and industrial buildings. The system provides a sound dampening effect, improving the acoustic insulation of a room.