Everbuild 409 Block Guard has a long-lasting acrylic based formula that dries clear. Designed to bind jointing sand and form a durable seal over block paving and other mineral paver/flags. It penetrates deeply into pavers and jointing sand, and then cures by solvent evaporation. Helps facilitate easier cleaning. Contains a powerful fungicide to help prevent the growth of mould, fungus or weeds. Areas for use - Block paved drives and pathways - Natural stone patio areas - Cement based flagstones Specification Size 5 litre Coverage Average 2m per litre Drying Time 3-4 hours, between coats