what causes mould on walls

Mold on walls can be caused by various factors, including excess condensation due to lack of ventilation, leaking pipes, leaking roofs, poor construction of walls, high humidity, and persistent moisture. Mold spores hitting damp walls in the right conditions can lead to mold development in as little as 24-48 hours. To effectively treat mold on walls, it's essential to address the underlying source of dampness. Additionally, mold can be a sign of an underlying damp problem and may pose health risks, as it can generate allergens and toxic substances. Therefore, it's important to identify and rectify the underlying causes of mold to prevent its growth and ensure a healthy living environment