09.06.2023 ... How Is Cork Flooring Made? ... The majority of cork used for flooring, as well as wine-bottle corks, actually comes from the bark of the cork oak...
Cork flooring, a popular choice for its eco-friendliness and unique aesthetic, is made from the bark of cork oak trees. This process, known as cork harvesting, is not only sustainable but also beneficial for the trees. Here's an in-depth look at how cork flooring is made, from tree to floor.
The cork oak tree's bark is the primary raw material for cork flooring. The harvesting process, known as 'estima,' is meticulous and sustainable. It's carried out by skilled harvesters who carefully remove the bark without harming the tree. This process can be done every 9-12 years, as the bark grows back, making cork a renewable resource.
After harvesting, the cork bark is left to dry naturally for about six months. This step is crucial as it helps the cork develop its unique cellular structure and ensures the final product's quality. Once dried, the cork is boiled to make it more malleable, then sliced into thin sheets using specialized machinery.

The cork sheets are then baked at high temperatures to eliminate any remaining moisture and kill bacteria. After baking, the cork is ground into small granules, which are later mixed with a natural resin binder to create cork tiles. This process ensures the flooring's durability and resistance to wear and tear.
The cork granules and resin mixture are poured into molds and pressed under high pressure to create uniform tiles. These tiles are then left to cure, allowing the resin to harden and bond with the cork. After curing, the tiles are finished with a protective layer to enhance their durability and resistance to stains and scratches. This layer can be a natural wax or a polyurethane coating, depending on the manufacturer's preference.
Cork flooring comes in various types, each with its unique characteristics:
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Cork flooring is typically installed using a floating floor system, which involves clicking the planks together without nailing or gluing them down. This method allows for easy installation and future removal if needed. As for maintenance, cork flooring requires periodic cleaning and occasional reapplication of the protective finish to maintain its appearance and durability.
In the world of sustainable and eco-friendly flooring options, cork stands out as a durable, comfortable, and visually appealing choice. Its unique manufacturing process ensures that not only is the final product high-quality, but the environmental impact is minimal, making it a win-win for both consumers and the planet.
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