When are primers traditionally required before the application of paint, and why?
- When painting an unpainted surface, to penetrate and seal the surface
- When painting over dirty, scuffed and stained painted surfaces, to block the stains from showing through to the paint
- When painting over bright or bold paint colours, to ensure the true colour of the finish coat isn’t affected by an undertone
- When painting over glossy or hard surfaces, to ensure adhesion
- When painting over problem surfaces, like metal, chalky concrete, knots in wood, etc