Material

Thickness (mm)

λ (W/m˚C)

Density (kg/m³)

Internal gypsum board

15

0.1

780

Leca

100

0.2

600

Polyurethane

300

0.023

50

Leca

100

0.2

600

Glass wool

100

0.032

35

External gypsum board

20

0.1

780