Over 50% of its volume is air, which makes it very light. It weighs just 0.16 grams per cubic centimeter, and it can float.
It is totally impermeable to liquids and practically impermeable to gases, thanks to the suberin and cerin present in the composition of cork cells. Its resistance to moisture allows it to grow old without deteriorating.
Antistatic and anti-allergic
It does not absorb dust and prevents the appearance of mites and, therefore, contributes to protection against allergies.
Cork is resistant to wear, thanks to its honeycomb structure, which makes it less affected by impact or friction than other hard surfaces.
Elastic and compressible
It can be compressed to around half its thickness without losing any flexibility, and it decompresses, recovering its initial shape and volume, as soon as it ceases to be compressed. This flexibility is given by its airtight cells containing a gas mixture similar to air.
Moreover, the cork is a natural fire retardant and a excellent thermoacoustic insulator.