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NP Keycoat is a high performance, water based, modified polymer primer. Supplied ready to use it is formulated for use on smooth and non-porous, demanding substrates prior to tiling or levelling. It is ideal for priming one coat DPMs, tiled floors and metal substrates. NP Keycoat can also be diluted for use on porous substrates as a general purpose primer to reduce the absorption of the substrate before applying tile adhesives and levelling compounds.