Just good old H20

[plasterman2]

Is water enough before rendering on internal walls, that have had old plaster hacked off Be it red brick or blocks etc or should you definatly use SBR or PVA everytime

 

[kebab king]

It will be enough, if you know what your doing.

 

[Dansouthcoast84]

I like to use sbr cement slury regardless,

 

[Rigsby]

Experience will tell you if water is enough. Rough brick or block with a bit of suction will be ok but smooth high density background (low suction) may require a bonding agent.

 

[carlos]

I do lots of this type of rendering, usually after DPC injection in terrace house's. Red brick etc. A light spray with water just before you apply your render is normally enough. Only experience can really answer this question based on site conditions.