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Yes. So-called “floating” cork floors can be installed over concrete subfloor, though a polyethylene vapor barrier is required. This type of installation is achieved using the glue-down tiles, which are trickier for a DIY approach, so consider calling a professional to help you if you’re planning to install your cork floor over concrete. 

Sealing a concrete surface protects it from damage caused by water, chemicals, and general wear and tear, making it last longer. A good sealer acts like a shield to prevent cracks, stains, and deterioration. Plus, it enhances the appearance of the concrete, giving it a fresh, polished look that can boost your property’s curb appeal.

Investing in stained and sealed concrete can be worthwhile and may catch the eye of potential homebuyers during resale. The look is sleek and modern, allowing new buyers to envision a versatile list of home decor options. Stained concrete floors are also easy to maintain and feature a custom look that stands out compared to gray, unsealed concrete surfaces.

Yes, you can seal old concrete, but proper preparation is essential. Before sealing, ensure the concrete is clean, dry, and free of any old sealant. To check if resealing is necessary, place a few drops of water on the surface; if they are absorbed in less than five minutes, it's time to reseal. If you are using the same type of sealer that was previously applied, you may not need to remove the old layer. However, if you are applying a different type of sealer, the existing one must be removed. Additionally, repair or fill any cracks to create a smooth base before you begin sealing.