What is Foamed Foam Glass?

Womersleys supply Foamit foamed glass that is an environmentally friendly insulating product and low capillarity lightweight fill, which is manufactured from cleaned recycled glass. It is ideal as an insulating lightweight aggregate material for infrastructure projects as well as providing insulation in a wide range of buildings, foundations, limecrete floors and roofs (green roofs, rooftop parking, rooftop terraces etc).

Foamit is a lightweight aggregate made from purified recycled glass. Foam glass has been used in Europe and Scandinavia for a long time and its positive benefits are widely known; it is environmentally friendly, non-flammable, lightweight and easy to work with.
Foamit as a bulk filler material is one of the lightest on the market. Benefits of this low density include the ease of compaction of the material and transport efficiency.
Foam glass’s cell structure gives the product uniquely low thermal conductivity (dry about 0.1 W / mK), making it an excellent insulator.
Foamit’s easy compaction and angle of friction ensure a stable substructure on site.
Foamit is non-combustible and has low capillarity, meaning it can be effective as a moisture barrier.
Foamit is made up of 99% purified recycled glass. Thanks to the nature of the manufacturing process of Foamit foam glass, there is no organic matter contained in the finished products.
Foamit foam glass’s raw material is recycled glass, which is cleaned and milled before being heated in the furnace. Due to the manufacturing technique, it does not contain organic substances and is non-flammable. It is odourless, inert and does not leach harmful substances in conventional applications. Using recycled glass as a raw material saves virgin natural resources and reduces the carbon footprint. Foamit is reusable and can be upcycled. The use of Foamit for fill material and / or frost insulation of road, street and field structures will not cause significant groundwater pollution.

Technical Data


Foamit 30

Foamit 20

Grain Size mm 20-30 10-20
Loose Weight kg/m3 210 190
Equilibrium moisture content M% c.0.25 c.0.25
Lambda, dry response W/mk 0.1 0.1
Minimum installation depth cm 5 3
Compacting factor % 10-25 10-25
Repose Angle 0 ~45 ~45
Frost resistance
yes yes
Modulus of deformation subsoil with low load bearing capacity, Ev2 MN/m2 ~50 ~40
Compression Strength
N/mm2 >0.9 >0.7
Inert Building Material yes yes
Capillary breaking, repose over 200mm layer yes yes
Recyclability 100% 100%

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