Limecrete is a mix of natural hydraulic lime (NHL5) and sharp sand. Sometimes glass fibres are mixed in to give a more durable surface. Tests have shown that physical characteristics in terms of compression strength are more than adequate to meet Building Regulations.
The density and low thermal conductivity of earth floors mean that they provide good thermal mass. They are capable of absorbing heat and releasing it when the internal temperature drops. When the earth is reasonably dry, the ground under the building will maintain a fairly stable temperature of around 10C year round. But that is a not enough to meet modern standards of thermal efficiency and potential heat loss, so some form of insulation and, perhaps ironically, a moisture barrier, is needed.
Glasscrete Floor Systems is a modern form of limecrete floor that incorporates GEOCELL foam glass gravel as the moisture managing, insulating base. Foam glass is a lightweight, breathable loose lay aggregate and, being made from 100% recycled glass is a sustainable insulation.
Foamed glass aggregate is a sustainable replacement construction material for:
- Foundation Details
- Glasscrete (limecrete) floors
- Sub-base for modern floor slabs
- Timber framed floor (without slabs)
- Green roofs and landscaping
- Slope stabilization
- Lightweight back fill (vaulted ceilings)
- Sports turf/arenas
This is an updated version of the original limecrete system capable of being used as a load bearing hardcore. It also has better insulation per thickness of sub-base (approximately 20% better thermal performance compared to clay aggregate).