Foam glass gravel

Foam glass gravel is light and dimensionally stable, with a lambda rating of 0.08 W/mK and a specific weight of 150 kg per cubic metre.

The manufacturing process seals the air bubbles giving the gravel non-capillary properties.

The material has a high compressive strength as well as insulatory properties making it ideal for insulated floor construction[1] Glass shards are cleaned and milled to a powder before a foaming agent, active carbon,[2] is added in either liquid or solid form.

Optimum temperatures produce maximum quantities of the foamed product.

It can be used to insulate underground tanks or pipes, create drainage beds and French drains.