artnovion dBA US-Cork Floor Underscreed Description dBA US-Cork is an agglomerated cork with recycled polyurethane resilient layer for impact noise insulation of floating screed. This underscreed is installed under concrete slabs so it prevents impact sounds generated by footsteps, for example, from propagating through the building's main structures. The undulated design makes it easier to deform, hence improving the material's sound insulation efficiency at mid and high frequencies. Impact Sound Reduction (ALw)* * ALw measured with US-Cork applied directly under a 70 mm and over a 140 mm concrete slabs. Specifications Material: Cork and Recycled Polyurethane Dimensions: 20000 x 1000 x 6 (mm) Installation: Chemical