The surface shall be cleaned thoroughly of all contaminants
like dust, traces of curing compound, oil and grease. All
surface imperfections, protrusions, structurally unsound
and friable concrete must be removed and repaired with a
suitable Polycrete* concrete repair mortar

The surface must be dry before priming with Polyprime WB.
thoroughly mix the contents of the drum so that the there is
no settlement due to storage. The primer can be applied by
brush or roller @4-5 m²/L/coat. For dry and porous surfaces
apply a second coat. 

The second coat shall be applied only after the first coat dries off completely. The primer should be allowed to dry naturally before the application of subsequent layers