Efflorescence 7 Poor Opacity

POOR OPACITY

POOR OPACITY

Failure of dried paint to mask or cover the underlying surface.

POSSIBLE CAUSES

• Painting at a higher coverage rate than recommended. • Painting with low quality/incorrect application tools. • Use of an improper combination of tinting base and tinting colour. • The addition of a small amount of yellow, ochre or bright red tinter to a white base will reduce the refractive index and therefore adversely affect the opacity.

SOLUTIONS

• Follow manufacturer’s recommendation on coverage rate. • Use premium quality paint for better hiding and flow. • Use quality tools and the recommended roller nap. • Use the correct tinting base for the specified colour. • The selection of colours that contain black and/or blue tinters will provide excellent opacity, even if some yellow or red tinter is also present. Some colours may require the application of more than two coats or a tinted undercoat, especially when painting over dark colours. 17