The build up in this section above offers a breathable, insulated floor and consists of;

1. A breathable membrane of Terram 1000,
2. 10-20mm uncoated light expanded clay aggregate (leca)
3. above that, another layer of Terram 1000,
4. A limecrete mix of 1 part 0-4mm leca, 1part 4-10mm leca, 1 part 10-20mm leca and 1 part of NHL5
5. A bed of 3 parts sand aggregate and 1 part NHL5