Cork – Insulating Material

Cork is a waterproof material with a spongy form, which we receive from the trunk of the cork oak, which grows mainly in Portugal. Although many do not know it, the cork has significant advantages and unique results in soundproofing and anti-vibration insulation, while we should not forget that cork offers significant thermal insulation. Just because it combines all the above features the cork has had a variety of industrial uses, such as oil pipelines, airports, cellars, refrigerators etc, for years.
Besides these, however, the cork has more simple uses that can be useful to all of us, like placing in external walls, in floors, double walls, doors etc.

Soundproofing: The cork is one of the leading materials for soundproofing, because of its compact structure, and it of course provides insulation against gases and liquids.

Anti-vibration – Elasticity: Cork presents high resistance to high pressures as it is flexible and returns to its original state without being deformed when the pressure exerted stops. Therefore the cork has a great capacity to absorb shocks and it is often used as an anti-shock material, functioning as an “airbag”.

Thermal insulation:Although cork can not be considered as a thermal-insulating material, it also has an insulating capacity, λ = 0.039. Certainly, we do not recommend you to use cork if you wish to do a thermal insulation, but the premier thermal 3G Durosol material. However if you want to do some other work and use cork, you will definitely get results and improved thermal insulation.

Lightness: For those who do not know, cork is one of the lightest solid materials, as approximately half of its volume is air.

Strength:: The cork is an extremely durable material both in extreme temperatures (high and low) and pressure. Specifically, one cubic inch of cork can accept pressure of up to 6.5 tonnes.

Tightness: Among others, cork has quite large water repellency because of its consistency and the presence of fatty substances on the membranes.

Stability:cork is light and flexible material, it is also a very durable and hard material.

Environment friendly: : Cork is a completely (100%) natural product, has unlimited shelf life without losing the technical features that you will see below, and of course, cork is 100% recyclable.

The blond cork you see above is mainly used for soundproofing and for decorative use, and has insulating properties.

Size Price
41×37 8mm thickness 18 € / m² + VAT
50x50cm 4mm thickness 12 € / m² + VAT

The black cork is mainly used for anti-shock applications, because of its even higher elasticity, while it still maintains some of the soundproofing properties of cork.

Size Price
100x50cm 3cm thickness 25€ / m² + VAT

Fire behaviour Ε
Thermal conductivity (λ) 0,039
Specific Gravity 170 – 240 Kg/m³
Stress fracture ≥400 kPa
Volume elasticity 30 – 50%
Recovery ≥ 75%
Density 100-120 Kg.m³
Resistance to 10% compression 100 kPa
Grade of Moisture Max 8%
Water absorption 0,5 Kgr/m²

Insulation Materials