ARDEX P 51 is a multi-purpose primer ideal for priming porous surfaces prior to the application of ARDEX water-based levelling and smoothing compounds, and wood based sheets and boards prior to the application of ARDEX X 7001 tile adhesive. Multipurpose – seals and primes a wide range of applications Blue pigment allows clear identification of primed areas Convenient re-sealable tub Provides up to 160m2 coverage per 5kg unit Easy to use, dilute as appropriate for the application