A cork floating floor can NOT be installed under cabinetry. That means you get the rare luxury of installing floors after the full kitchen reno has been performed. This allows the floor to float AND gives you the ability to get all the wet/dirty/dusty jobs done first before you install the last component.
You can choose to “seal” the floor. In a “dry” area (living room, bedroom, etc) there is no need to seal the floor. In a kitchen installation, you would need to apply two coats of a water based polyurethane to seal the seams of the floor against water damage. If you are not installing in a kitchen, you are not required to do this.
The “water damage” issue is always there in kitchens. If this is a huge concern, we do have glue down cork tiles that can be used instead of cork floating flooring. You will have a floor height difference between any glue-in-place product. A quick/easy floor raise can be achieved with cement backer board and mortar/mastic. The cork tiles can then be glued straight to the backer board. The tiles are then sealed with 2 coats of the Polywhey polyurethane and you have a water proof cork floor.