This insulating lining paper features a 4mm layer of BASF expanded polystyrene infused with graphite particles and reinforced by a laminated backing. It offers 20% better insulation performance than standard polystyrene of the same thickness, equivalent to 26cm of solid concrete. The paper helps combat condensation and resultant mould by retaining more room heat at the wall surface. It requires adhesive (code 33849) for application. For enhanced durability and finish, Wallrock Fibreliner (code 14480) or Wallrock Fibreliner Smooth (code 35830) can be used to provide a perfect surface for paint or further decoration.