Any type of fungus or bacteria would require proper temperature and moisture to grow. Since the WPC boards are resistant to moisture, they would not support the growth of fungi and bacteria. This would avoid tensions for homeowners, that overexposure to moisture would cause decaying of the flooring and would not last long. If you wish, you can add paint or texture paint to the surface to enhance the beauty and for increased protection. It is a maintenance-free product; so many people love to install it for their homes.