CorkSustainably harvested and all natural, cork has grown in popularity in recent years. While its distinctive look isn't for everyone, people who love it appreciate its strong patterns and texture, its warm look and its ecofriendliness. Pros: Resilient and flexible, cork provides a great deal of comfort underfoot, and it can absorb the shock from a dropped plate or cup (translation: less chance of breakage). It holds warmth and absorbs sound, lending a cozy feel. And it's rich in suberin, a natural substance that guards against mold, mildew, rot and pests.Cons: Cork holds up well, but not without a little TLC. Because dirt and grit can scar it, you'll need to stay on top of sweeping and vacuuming, and you will also need to reseal it regularly with polyurethane or wax. Small dings, such as from a dropped knife, will "heal" on their own, but major scars are harder to fix. Cork also can fade over time.Cost: About $2 to $12 per square foot, uninstalled. Cork Flooring 101