Window frame mould

Mould is a fungus which can grow on almost any surface where moisture is present. The spores are present in the air and when they meet with moisture they grow and multiply. The biggest cause of mould around windows is condensation.The most likely cause of mould around your windows is condensation. If you can prevent the condensation building up, mould shouldn't grow. To get rid of the mould on your windows, used a clean 50/50 mix of warm water and Milton fluid, scrubbing it off with a soft cloth.