PATCHINESS PATCHINESS Poor sheen or colour uniformity, especially recognisable when looking at the surface at an angle.
POSSIBLE CAUSES • Painting over surfaces with variable texture and porosity (eg. joins between plasterboard). • Failure to properly prime or undercoat a substrate. • Inconsistent application technique. • Poor conditions during the application or drying period (eg. high temperatures and/or high humidity).
SOLUTIONS • New substrates should be primed/sealed before applying the top coat to ensure a substrate that is uniform in porosity. • Ensure paint is applied using a consistent application technique (eg.applying even roller pressure from top to bottom) whilst maintaining a wet edge. • Ensure application and drying conditions conform to manufacturer’s recommendations. 14
