19/06/2026
Choosing the wrong primer is one of the most common — and costly — paint mistakes.
Here's a simple guide to get it right:
WATER-BASED PRIMER
Best for: New interior plaster that is dry, ceiling stains, most interior surfaces
Benefits: Lower VOC, faster drying, easy cleanup
Prominent Paints Ultra Prime is our benchmark for alkali-resistant applications on interior substrates or on Chromadek Roof Sheets/cladding that will be painted for the first time.
SOLVENT-BASED PRIMER
Best for: New Exterior unpainted plaster, timber, surfaces with existing oil-based coatings
Benefits: Superior adhesion on porous or non-porous and problem substrates
Not sure which one you need? Ask us — we'll point you in the right direction.
Beyond Colour.