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Cork granules 250L per bag

Cork granules 250L per bag

Vanaf €67,60
* Unit price: €0,27 / Liter
Availability: In stock in Ingelmunster and Ghent

Delivery Information

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Product Information

Expanded cork insulation granules are ideal for thermal and acoustic insulation to fill cavities in roofs, floors, and walls. Cork does not lose these properties through aging and is rot-resistant. Therefore, cork can be used in constructions with an increased risk of moisture.

Cork performs excellently acoustically in various aspects of sound reduction: absorption of sound waves (for example, reduced reverberation time), acoustic decoupling (for example, reduced impact sound between floors).

Acoustic and thermal insulation in the Staenis grid or between wooden joist beams in floors or ceilings:
due to their high mass and unique damping structure, the granules absorb sound.
Filling material for technical cavities and ducts:
the cork granules slide easily due to their small size and fill the space.

Product Information

Calculate here quickly and easily how many cork corks you need.


- Grain size: 2-9 mm
- Lambda value: 0.045 - 0.050 W/m.K
- Heat storage capacity: 1,670 J/kg.K
- Density: 72 kg/m³
- Temperature range: -180°C to +140°C
- Fire rating (DIN EN13501-1): E.

Environment impact

The cork boards of the Portuguese cooperative Sofalca are made from the virgin cork granules of the cork oak bark (Quercus suber). The stripping process takes place in cycles of 9 years, until the tree is about 150 years old. The cork oak is not affected by this. Due to the high CO2 storage capacity of cork oak forests, the extraction of cork insulation also contributes to climate protection. Cork oak forests are part of a unique and biodiverse ecosystem that is home to several endangered animal and plant species in Europe. Cork is 100% recyclable.

In the production of expanded cork, the 100% natural granules are ground and expanded. The process is very environmentally friendly. By heating with steam, the granules expand and bind with the naturally present resins, without any addition of adhesives. The energy for heating is largely obtained from biomass surpluses or from lower-quality cork residues.

The transport of the finished boards is done by ship, minimizing the energy impact here as well.

Expanded cork does not release any chemical substances into the indoor environment, making it a very healthy way of insulating.

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