URSA TERRA Base mineral wool panel, according to EN 13162 standard, non-hydrophilic, without facing. Supplied on rolled panel. The product is recommended for plasterboards. Properties: Reaction to fire: A1 Thermal conductivity coefficient:0.037 W/mK: thermal resistance R=1.35 [m2K/W] -thickness 50[mm], thermal resistance R=1.60 [m2K/W] -thickness 60[mm]; thermal resistance R=2.00 [m2K/W] -thickness 75[mm], thermal resistance R=2.15 [m2K/W] -thickness 80[mm],thermal resistance R=2.70 [m2K/W] -thickness 100[mm], thermal resistance R=3.20 [m2K/W] -thickness 120[mm]; thermal resistance R=3.50 [m2K/W] -thickness 130[mm]; thermal resistance R=3.75 [m2K/W] -thickness 140[mm]; thermal resistance R=4.05 [m2K/W] -thickness 150[mm];