Acidic gel: Oxiclear
Oxiclear is an acidic gel formulated to dissolve metallic oxides from any surface.
It is used to remove white lead stains on roofing slates and conservatories, rust marks on render or on any surface, copper stains.
It is suitable for low level render browning in areas where the soil is iron rich.
Brushed on aged or tired timber decking Oxiclear will clear the baked and ingrained layers from the surface and reveal the veining without damage.