Cork fact sheet

Key Facts A1-3 expanded cork

  • CO₂- Capturing: 180 kg/m³

  • Specific weight: 160 kg/m³

  • Fire protection class: B1 according to EN 13501-1; DIN 4102

  • Thermal conductivity: 0.039 - 0.045 W/m.ºK

Key Facts A1-3 Cork panels

  • CO₂- Capturing: 716 kg/m³

  • Specific weight: 450 kg/m³

  • Fire protection class: B1 according to EN 13501-1; DIN 4102

    • Replaces building materials with negative ecological impacts - Life cycle assessment improvement

    • Stores biogenic carbon

    • 100% made from renewable natural cork

    • Technical drying is carried out using
      thermal energy with own waste from the shredding process - CO₂-neutral

    • antiallergic

    • Breathable - regulates room climate and room temperature - contributes to healthy living

  • #biogen:

    • The cork oak, Quercus suber L., is native to semi-arid regions of southern Europe and is the habitat of 140 plant and 55 animal species. Cork is the organ tissue parenchyma that covers the trunk and branches

    • Stomata on the surface of the leaves absorb CO₂ and cork oaks use it to build up sugar, i.e. carbon.

    • These carbohydrates serve both as a source of energy and as a building material from which cork oaks, for example, produce beef. -> 6 H₂O + 6 CO₂ = 6 O₂ + C₆H₁₂O₆ (glucose)

    • Cork oaks that are regularly peeled produce 250% to 400% more cork than without peeling

    • The use of cork products, which requires extraction, leads to the formation of more cork on the tree, which corresponds to a larger amount of bound CO₂.

    • If cork is used, the absorbed CO₂ is stored for long periods of time.

    • Cork oaks are only "peeled" every 9 years and only to the extent that does not damage the tree!

    • Cork is treated with steam heated by steam generators and expands to the specific weight required for the area of application.

    • Agglomeration is based on the cork's own resins

    • Cork also has considerable chemical and biological stability and is highly fire-resistant

    • Cork is already the product - 100% natural and ecological, an advantage that is unparalleled in other competing materials!

    • Cork grows without additional energy and without producing pollutants.

    • Durability - Many houses built in Lisbon in the 1940s and 1950s still have their original cork flooring and wall coverings.

    • Insulation - as thermal, sound and vibration insulation material

    • Filler - granules for filling cavities and for
      mortar mixtures

    • Joints - insulation, expansion or compression joints

    • Coverings - intermediate floors, floors, ceilings, skirting boards, linoleum

    • Industrial - as a vibration damper for industrial appliances and
      insulating material for cooling technology

    • 45% suberin - responsible for compressibility/elasticity

    • 27% lignin- structural sugar for cell wall structure

    • 12% polysaccharides - linked to the cork structure

    • 6% wax-containing substances - water-repellent and important
      for impermeability - phenolic compounds provide protection against attacks by biological organisms

    • 6% tannins - color and material protection/preservation

    • 4% ash - polymeric-complex structural components
      and non-structural components

    • CO₂ calculation according to ÖKOBAUDAT current version 2021-II from 25.06.2021 according to EN15804+A2

    • APCOR - Portuguese Cork Association

    • Gil (2012) 'Cork as a building material - technical guide'.