Table 2 Embodied energy and embodied carbon for building and insulation materials.

From: Basic research on layered geopolymer composites with insulating materials of natural origin

Material

EE (Mj/kg)

EC (kgCO2/kg)

Fly ash

0.1

0.01

Sand

0.1

0.005

Cement

4.6

0.83

Concrete

0.95

0.13

Geopolymer

0.33

Cellulose

0.94–3.3

Flax (insulation)

39.5

1.70

Mineral wool

16.6

1.20

Rock wool

16.8

1.05

Paper wool (wood shavings)

20.17

0.63

Wood wool

10.8

Recycled wool

20.9

Wool (overall)

3

0.15

Foamed polystyrene

88.6

2.50

Thermoformable foamed PS

109.2

3.40

Polyurethane

72.1

3.00

Coconut mat

42

Flax mat

50

Hemp mat

40