Wear gloves, a mask, and eye protection
Open windows and improve ventilation
Keep children and pets away from the area
Mix warm water with mild detergent
Test the cleaning solution on a small hidden area
Scrub the mouldy wall gently with a sponge or soft brush
Wipe the area with a clean damp cloth
Use white vinegar on stubborn mould spots
Use a mould remover product if needed
Dry the wall completely with a fan or dehumidifier
Dispose of used cloths, sponges, and contaminated materials safely
Repair leaks and sources of dampness
Reduce indoor humidity
Repaint only after the wall is fully dry
Call a professional if the mould covers a large area or keeps returning