BASF (Ludwigshafen / Germany; www.basf.com) has introduced an XPS which it claims has a lambda value (measurement of thermal conductivity) that is around 20% higher than competitive products, significantly raising its insulation capacity. Part of the "Styrodur C" family, the new "Styrodur Neo" achieves this improved performance through the integration of finely-dispersed graphite particles in the XPS that absorb and reflect heat radiation. Because of the improved performance, the thickness of panels can be reduced making the material suitable for the insulation of building interiors on walls, floors and ceilings and for the insulation of thermal bridges and cavity walls.

The foam contains only air as cell gas and offers high compressive strength, low water absorption, resistance to rot, dimensional stability and durability, the company said.