hempcrete

Hempcrete's density is 15% of traditional concrete, as well as carbon negative.

He and Rachel Bevan has recently built a demonstration low energy hempcrete house in County Down.

The external walls of the building are made from 500mm thick hempcrete, whereas the lecture theatre has 7.2m high walls made from 320t of rammed earth.

Set in an orchard on the bank of a quiet river, the "hempcrete" cottage is also within striking distance of Strangford Lough and the Mourne Mountains.

The first example of the use of hempcrete was in 1986 in France with the renovation of the Maison de la Turque in Nogent-sur-Seine by the innovator Charles Rasetti.