1. Dansand® Paving Stone & Block Impregnation should be applied to surfaces that have been cleaned with water and for the very best effect use combined with Dansand® Paving Stone & Block Cleanser beforehand, ensuring that all dirt, moss, algae’s, oil and grease have been cleaned off. When the coating is completely dry Dansand® Paving Stone & Block Impregnation should be applied with a paint roller or soft brush in the thinnest layer possible. Never over-saturate. apply only once in a thin layer. Always conduct a test on a small area to establish whether the surface and material in question are compatible with Dansand® Paving Stone & Block Impregnation.