I'm painting a previously papered wall. I've washed as much paste off
as possible with sugar soap and plan to use Polyfilla basecoat before
painting. Do you think I need to put an oil based basecoat on instead
to stop residual paste bleeding through?

wrote:
I'm painting a previously papered wall. I've washed as much paste off
as possible with sugar soap and plan to use Polyfilla basecoat before
painting. Do you think I need to put an oil based basecoat on instead
to stop residual paste bleeding through?


Paste won't bleed through emulsion paint.
The only time I'd consider an oil based paint is on outside walls where
there may be damp