Expanded cork, more precisely cork bark obtained from cork oak, is the oldest natural and ecological insulation for home insulation. Find out why cork is a good thermal insulator.
The advantages of cork are many: this material is light, rot-proof, it does not disintegrate, has perfect sound insulation and is very resistant to water, insects, rodents and compression.
In addition, cork is fireproof (unlike polystyrene) and does not release any toxic substances. Finally, thanks to its great stability over time, cork has an unlimited lifespan.
Cork, a perfect thermal insulator
In addition to these advantages, cork is also a very good thermal insulator thanks to its structure: the air is trapped in its very fine cells (96% air). Cork therefore benefits from a very good coefficient of thermal conductivity and has a significant thermal phase shift capacity thanks to its high density: it slows down the penetration of heat into the house, especially in summer.
Cork insulation therefore makes it possible to regulate the temperature within a home and thus avoid excessive use of heating or air conditioning. To promote good thermal insulation, the thickness of the material must be taken into account. Therefore, to reduce thermal bridges, pure expanded cork and high strength expanded cork are recommended.
Cork can be used as insulation in different places of a house: facades, walls, floors, roofs, attics... It can also be used in several forms to insulate a house, inside or outside. : panels, bulk (in the form of granules), slabs, rolls...