A key characteristic of porcelain is an exceptionally low water absorption value, meaning that the paving tile will not draw moisture to the same degree as other paving materials. This is a great benefit when it come to the surface resisting staining and staying looking clean. However, this also means that porcelain paving will absorb almost nothing from the bedding mortar and consequently, without help, porcelain will not form a strong, sustainable bond to the mortar bed. Priming Slurry is designed to facilitate the strong bonding of non-porous / low porous, porcelain and natural stone paving. To create the strong, sustainable bond required, brush primer slurry on the underside of each paving tile/slab just prior to laying. It's easy to apply and doesn’t add excessive cost to the installation.