Grass plants

There are many different types of grass which can be used as climatic materials in the form of loose fill, matting or boards; e.g. wheat, rye, barley, oats, elephant grass, cotton, hemp, nettles, maize, reed, flax and eelgrass. Even common grass (monocotyledonous) can be used to make fibres for insulation products.

Loose fill consists of chopped stalks or fibre mass. Fibre products often have flame retardants and fungicides added, e.g. borates and are blown in. With chopped straw, lime is often added to repel vermin and reduce the risk of attack by fungus. It can also be stabilized with clay which besides improving resistance to rot also prevents settling.

14.19

Making blocks of straw loam in the Danube delta (Romania). Source: Soare.

14.19

Making blocks of straw loam in the Danube delta (Romania). Source: Soare.

This method is often referred to as lightweight straw loam. Straw bale building can be seen as a hybrid where the loose mass is bound into 'elements' by the baling wires or strings.

0 0

Post a comment