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Prior to the application of block paving sealant the paving must be clean and free of dirt and dust. You also need to be satisfied that no efflorescence (surface whiteness) that could detract from the aesthetic finish is present. If efflorescence is present it should be treated with efflorescence remover, then thoroughly washed down with clean water. It is then best to allow 4-6 weeks after treatment to make sure that the efflorescence does not re-appear.


Before applying block paving sealer dependent upon condition it is recommended to pre treat paving with fungicidal wash, leave for a few days and then clean with a pressure or jet washer.During the cleaning process remove as much 'muck' from the joints as possible and ideally treat again will fungicidal wash prior to final preparation


After cleaning leave the block paving to dry throughly for a few days. You can ensure the block paving is dry by scraping out the remaining sand between the blocks, If the sand is dry, the paving is now ready for the application of the block paving sealant. Kiln dry sand should then be swept into all joints with a sanding broom. Make sure there is no surplus sand left on the face or bevelled edges of the blocks. This ensures that no sand becomes stuck to the surface of the pavers once sealed.

It is advisable to protect areas such as borders, flowerbeds, ponds, masonry and adjacent areas from unwanted sealant with masking tape, cloths or boards. Ensure temperature is between 7-23 degrees and that no rain is forecast for at least 4 hours after each coat.

For further information on the preparation of block paving sealant prior to application contact us online or call us on 0800 988 0348