Black mould spots on walls and ceilings, and moisture on the inside of windows, are commonly caused by condensation due to a lack of air circulation. This issue is often a ‘lifestyle problem’. Bathrooms, kitchens, and drying laundry are the primary sources of steam and moisture in a flat. The most effective solution is to open windows into the vent position. Mould spots can lead to long-term health problems if left untreated. For more information on steps to reduce condensation and black mould growths, click here. The external walls at Malting Mead have cavity wall insulation. You must get approval from the Management before fitting an airbrick or vent.