Owatrol E-B (Emulsa Bond) is a useful water-based additive to have around, especially on exterior work. It basically turns any (finish) paint into a sticky penetrative primer to cope with problem surfaces.
So, first coat of say an exterior masonry paint, or interior acrylic emulsion, add about 30% E-B, stir thoroughly and apply. Then apply a second finish coat (with no E-B added) and you have a solid painted surface in 2 coats. That’s right, make your own tinted compatible high adhesion primer from any water-based paint.
This is a thorough write-up of an exterior masonry painting job in Cornwall by Alan Iles, where they used the Owatrol E-B in the first coat of Farrow and Ball exterior masonry paint.
You can add it to emulsion paint, so you can prime and first coat bare plaster in one. Top coat covers easily.
As Ron Taylor pointed out, don’t view additives as an extra expense, because in practice it is “paint”. Add 1 litre of E-B and you increase your paint stock by 1 litre.
Any thoughts or experience with yet another superb Owatrol product?