The accumulation of dirt, dust particles and/or other debris on your paint film may resemble mildew and isn’t the best look.
It can be caused by the use of low quality paint, by soil splashing onto the substrate or by general air pollutants like dust and exhaust fumes collecting on your house body and horizontal trim.
If you’re unsure whether the problem is dirt or mould, conduct a simple spot-test (see mould).
Simply wash away all surface dirt with Selleys® Original Sugar Soap, rinse with clean water and ensure total dry state before priming and re-painting. If the dirt is heavy, you may need to use a power washer.
Dirt pickup can't be eliminated entirely but top quality exterior latex paints offer superior dirt pickup resistance and washability to minimise its impact. Higher gloss paints are also more resistant to dirt pickup than flat paints, which are more porous and can more easily entrap dirt. Dulux Weathershield Gloss is recommended.
More problem solving advice
Have you noticed that there are areas of denser colour or higher gloss where wet and dry layers overlap during painting? For each problem you’ll find a guide to identifying it, its causes and solutions.
If you’ve noticed black, grey or brown areas on your painted surface, chances are you’re dealing with a mould problem. For each problem you’ll find a guide to identifying it, its causes and solutions.