In most cases, it is best to have your walls cleaned every 12 months in Brisbane. The wet and humid summers can promote mould and other growth that can attack your external walls and contribute to corrosion and rot.
In the winter, the dry and windy conditions mean more particles, such as dust and dirt, in the air, which can also batter external walls.
Of course, this depends on where you live and the materials used on the exterior walls. If you live near a busy road with heavy traffic, your walls will quickly get covered with particles from exhausts. The particles could pose a significant health risk to your family without regular cleaning.
If you have more questions about softwashing the external walls of your home in Brisbane, then contact us.