Hi Zarina, the cork is a fantastic product for cladding, it repels insects, is fire resistant, has a low water absorption level so won't swell when it rains, has a good thermal performance and it silvers beautifully when it ages. It actually started out being a purpley brown colour which you can see on the suppliers website. We used a supplier called, Mike Wye Associates. Link to the product below: https://www.mikewye.co.uk/product/facade-cork-board/

Hope this is helpful. All the best,

Richard