What kind of preparation is needed prior to parging?

Prior to parging, the surface must be thoroughly prepared to ensure good adhesion and a smooth finish. Parging requires a clean and properly prepped substrate for the mortar or cementitious material to bond effectively. This involves extensive cleaning to remove any debris, dust, or contaminants that could interfere with the bonding process. Surface smoothing may also be necessary if there are significant irregularities or protrusions on the surface to provide an even backdrop for the parging material. Additionally, in some cases, applying a primer can help with adhesion, depending on the material being used and the condition of the substrate.

In short, no preparation is not suitable for successful parging. Proper preparation is essential to ensure the longevity and effectiveness of the parging material.