Mold in Dubai villa: DIY bleach or professional needed?« Back to Previous Page

That damp wall with black speckles behind the wardrobe is a classic sign of a condensation and mould issue, very common in Dubai's climate. The persistent humidity and constant AC use can create cold spots on walls where moisture condenses, especially behind large furniture blocking airflow.

Using bleach from a hardware store is not recommended. It can remove the visible stain on non-porous surfaces but often fails on porous materials like drywall or plaster. The water in bleach can actually feed the mould's root system deep within the wall, and the chlorine evaporates quickly, leaving no residual protection. More critically, it addresses only the symptom, not the underlying moisture problem causing it.

For a situation like this—where the musty smell is strong and the wall itself feels damp—a professional assessment is strongly advised. The mould growth is likely more extensive inside the wall cavity. Proper remediation requires isolating the area, removing contaminated porous materials safely, and using specialized antimicrobial treatments. Crucially, a professional will identify and rectify the source of the moisture, which could be condensation, a small plumbing leak, or ingress from outside, to prevent it from returning immediately.

The cost for professional remediation is not fixed; it depends entirely on the extent of the damage discovered once the wall is opened up. For a single room, it can range from a contained treatment to a more involved process if structural materials are affected. Reputable companies provide a detailed assessment and quote only after a proper inspection. The key is to choose a provider that offers verifiable before-and-after testing to confirm the mould and spore counts have been returned to safe levels, not just a visual clean.