I'm using Focus Superior Non-Synthetic brushes. Would it really make a
difference using Synthetic brushes? In what way?


Christian McArdle wrote:
I put one coat of undercoat on the one of gloss. In places I
could faintly see the previous colour through the new paint if you
looked closely.

Acrylic undercoat isn't anywhere near as opaque as a solvent based
alternative. The opacity is found in the top coat.

Is Glidden Trade Acrylic any better in terms of opacity.

I use Glidden Trade Acrylic and Glidden Trade Acrylic Primecoat
Undercoat/Primer. I like it, but I don't expect the undercoat to have
any
obliterating power. It is basically providing a base for the real
paint,
which does.

I hope you've truely rubbed down the old gloss to give a good key.
Water
based paint will not stick to shiny old gloss paint.

Christian.