The Bunnings Workshop community can help with your home improvement projects.
I recommend using Dulux PRECISION Maximum Strength Adhesion Primer White for a no-fuss solution. It's a fantastic product I've been using lately on many hard-to-paint surfaces. It means that you don't have to sand and can apply it straight over the cleaned surface.
Wipe the wall down with some Sugar Soap and then remove it with a cloth and fresh water. Wait for the surface to dry and apply the primer.
After it has dried, you'll be ready for your topcoat and I would recommend Dulux Wash & Wear.
If you need help with your own painting project, don't hesitate to ask. We're here to help. - MitchellMc
Workshop is a friendly place to learn, get ideas and find inspiration for your home improvement projects