Enhance the natural colours and appearance of natural limestone surfaces with the StoneCare4U Essential Colour Boost Limestone Sealer 25L. It offers high-quality stain protection while delicately enhancing natural colours and appearance. How to apply: Remove any loose debris from the work surface before you start the job and ensure you have adequate safety wear, i.e. gloves, suitable protective eyewear, face mask and clothing. Leave the surface for a minimum of 72 hours with clear and dry weather to ensure the surface is completely dry and ready to be sealed. Application temperature range: 15 degrees to 23 degrees Celsius. Apply the first coat of colour boost with a low-pressure sprayer, roller, natural fibre brush or sponge. Do not dilute! In addition, any excess sealer must be removed entirely from the surface after 20 to 30 minutes. Apply a second coat applied approximately 45 to 60 minutes later for best results. The stone surface must be kept completely dry through the curing process, which can take up to 72 hours. Please note: The sealer will alter the colour and appearance of the stone surface. Therefore, we always advise trying the product in an inconspicuous area before use. Surfaces that are not to be sealed should be protected with masking material. This product is not suitable for Kandla Grey (mid and light grey) sandstone.