Possible applications

General Weight carrying substructure  Weight carrying thermal insulation  Loose or slightly compressed filling Sound Protection Underground work / Road construction


This section provides you with an overview of the possible applications of foam glass gravel.

Logistics / Processing

  • The complete installation is simple and does not require special safety precautions.
  • The Foam Glass Gravel (FGG) can be travelled on with standard construction vehicles already during emplacement.
  • To prevent infiltration of ground water or other liquids into the insulating foam layer made from FGG, we recommend using a fleece / geotextile.

After loose emplacement and evenly distribution of the FGG on the plane (soil) the FGG is be installed by means of positive locking of the granular structure trough compression.

Application for standard particle size (10-60mm)

Ground excavation/ ground preparation

Foam glass gravel insertion and distribution

Compression and area testing

Post processing and further built up

Weight carrying substructure 

The degree of compression = 1.3:1
For this application, the high compressive strength is the more important parameter, the insulation effect represented by the lambda value (insulating efficiency rate) is of smaller importance.

Possible applications:

  • Foundations
  • Substructures for poor undergrounds (e.g., swampy areas)
  • Road construction
  • Sport fields (soccer, tennis, horse tracks etc.)
  • Railway construction


  • Frost proof
  • Dynamic load-bearing capacity
  • Resistant to massive changes of load
  • Long life span
  • Drainage
  • Slightly bouncy underground, as required for sports fields

Weight carrying thermal insulation 

In this application a good load-bearing capacity and lambda value can be achieved with a compression of 1.3:1

Possible applications:

  • Homes (detached houses, apartment buildings)
  • Low energy houses
  • Foundations for halls, workshops, buildings without cellars (e.g., supermarkets)
  • Ice rinks, refrigerated storage houses etc.
  • Roofs for underground car parks to drive on
  • Parking decks


  • Simple to use without any additional materials
  • Application independent of weather
  • No adaptation work with inserts and corners
  • Shorter building time
  • High pressure resistance
  • Drainage /capillary breaking
    Simple and economic technology for application
    Work processes such as levelling of excavation, filling with gravel/pebbles and fine sand up to the lean concrete layer, can be omitted
    Reduction of labor time

Loose or slightly compressed filling

Examples of application

  • Flat roof insulation on top of a concrete layer
  • Tunnel superstructures
  • Perimeter insulation, towards the environment
  • GaLa - (Garden- and Landscape applications)
  • Flat roof insulation with extensive planting
  • Flat roof insulation with intensive planting
  • Landscape modelling
  • Landscape architecture
  • Road and railroad construction (without additional supporting measures)
  • Gardening
  • As an addition to regular soil and peat as loosening or aerating agent. This increases the heat absorption of the soil and the thus provides prolonged growth periods to plants and flowers.


  • Rot proof and dimensionally stable
  • Thermally insulating
  • Excellent drainage capacity of the layer
  • Thermal insulation and drainage capacity of the layer / capillary breaking
  • Saving of constructive expenditure, as material is of light-weight
  • Simple to apply
  • Embankments up to 50º possible
  • No adaptations when filling inserts and corners

Sound Protection

Foamglass gravel can be used as part of sound protection applications. The systems are characterized by simultaneous sound transmission and absorption. The heavy materials (e.g. stones) are responsible for the transmission and foam glass gravel is responsible for the absorption. The combined system also fulfils aesthetical demands.

Such a sound protection system is used by a railroad company and in the Swiss capital Bern. Sound absorption of more than 28 dB is possible.

Underground work / Road construction

Construction of:

  • Roads
  • Bridges
  • Embankments
  • Retaining walls


  • Lifespan increase of tarmac and reduced maintenance cost for roads
  • Increase drainage effect by void percentage of approx. 35%
  • Disburden of structural components (Statics) because of the low density (140-220 kg/m3)
  • Stabilization of unstable soil by increased load transfer and interlinking of gravel
  • Capillary breaking effects even at lower gravel heights