k rend base coat over painted render

[bobplasterer]

what K rend base coat should I use over painted render, or do I need to scabble it first

 

[Plasterers1StopShop]

what K rend base coat should I use over painted render, or do I need to scabble it first

K-rend don't make a basecoat for painted surfaces.You could use Renomur Top from PRB - this is designed to go over painted surfaces.

You'll need to remove any loose paint, and check its not oil based