I am tiling my bathroom floor....it is mdf - in error, i put down mdp primer instead of pva bond....can i put pva bond on top of the mdp primer and then lay the tiles?
No don’t use pva, sbr is best or a tiling primer and I wouldn’t tile on mdf to be honest, use cement board where possible
MDF board is not perfect subfloor for tiles you should have plywood or cement board, don't use pva... Use Sbr Bond or Mapei primer.
I would recommend ply not mfg it’s not the correct timber to use to tile on