Those outdoor areas around your property that cop the full sun in summer, often don’t get any sun in winter and subsequently mould and algae will take off and grow out of control. Left untreated it becomes not only an eyesore but also a serious slip and fall risk.
Fear not, as that outdoor patio area can be restored to its former glory at a reasonable cost with the correct equipment. Check out this result using a high pressure cleaning setup without any need for toxic cleaning products.