This Priming Slurry is essential for Porcelain slabs and will cover approx 12m2 of paving. Pavetuf Priming Slurry is a polymer and cementitious slurry, specifically formulated to provide an exceptional bond between a new mortar base and all types of stone and porcelain paving. As porcelain slabs are non porous then this slurry is essential when laying this type of slab, but is also perfect for all types of stone to create a firm bond between your wet mortar base and your paving.