How to Clean Cork Flooring Without Ruining the Finish

The biggest enemy of a cork floor isn't spills—it’s dirt. Tiny particles of grit and sand act like microscopic sandpaper every time you walk across the floor, slowly scratching away the protective polyurethane sealant. The absolute best thing you can do for your cork is to sweep or vacuum it regularly. Use a soft-bristled broom or a vacuum cleaner with the 'hard floor' setting engaged (turn off the spinning beater bar, as the stiff bristles can leave scratches). Keeping the abrasive dirt off the floor solves 90% of your problems.

Cork is naturally resistant to moisture thanks to a substance called suberin, but it is not waterproof. If a puddle of water sits on a seam between cork tiles, it will eventually seep down and cause the edges to swell and buckle. The rule here is simple: if you spill something, wipe it up right away. Don’t wait until you do the dishes. Grab a soft cloth or a paper towel and blot it dry. The longer liquid sits, the higher the chance it bypasses the sealant.

When it’s time to actually wash the floor, step away from the bleach, the ammonia, and the heavy-duty degreasers. Harsh chemicals will strip the protective finish right off. You need a pH-neutral cleaner. You can buy a commercial hardwood floor cleaner (like Bona), or you can make a simple DIY version. Mix four drops of mild dish soap into a spray bottle filled with warm water. That’s it. You want something incredibly gentle that cuts through grease without eating the floor.

Do not use a traditional sponge mop and a bucket of sloshing water. You never want to flood a cork floor. Instead, use a flat microfiber mop. Lightly mist the floor with your cleaning solution—just a fine spray, not a puddle. Then, run the microfiber mop over the damp section. The microfiber is brilliant because it aggressively grabs dirt without needing excess water or hard scrubbing. The floor should air-dry within a minute or two. If it’s taking five minutes to dry, you are using way too much liquid.

Because cork is essentially made of trapped air pockets (which is why it's so soft), it compresses under heavy weight. Over time, the legs of a heavy sofa or dining table will leave permanent divots in the floor. You have to spread the weight out. Buy wide, felt furniture pads and stick them under the legs of every piece of heavy furniture in the room. Don't use small rubber or plastic casters—they will just dig in harder. Felt pads are cheap, easy to apply, and completely save the integrity of the cork.