The new Bamboo planks have 7 layers of Polturethane applied at the factory. Several companies also offer a ceramic finish or Aluminum Oxide to further protect the Bamboo. You have to make sure you are buying good materials. You are welcome to use my web site as a source for Bamboo info, maintenance and installation suggestions. YOu clso have chosen well when you selected Cork.
Cork comes from the bark of the Cork Oak tree and it gets treated just like wood.
Moisture is the real enemy of cork, so once installed, you need to finish it with Polyurethane - make sure you use thin coats and get in the seams . I sell Bamboo and Cork for commer.cial use in Maryland. Good Luck to all . It's a test drive for a house I plan to build in the next few years. It's durability is well proven.