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

Our bedroom closet on the outside wall has had a damp, earthy smell for a couple of months, and I finally pulled everything out to find black splotches all over the back wall. We live in an older building in Deira and I’m worried the humidity is just making it worse. Is this something I can handle myself with bleach from Ace Hardware, or do I absolutely need to call a professional mold removal company, and what’s the typical cost for a small job like this?
Posted by Ravi Sharma
Asked on April 25, 2026 11:05 pm
In your Deira building, this is likely a condensation issue from the exterior wall's temperature differential with your air-conditioned room—a very common scenario here. Bleach is not recommended; it's mostly water and only bleaches the surface without killing the mold roots, and it can worsen the problem by adding moisture.

For a small, contained area, a thorough DIY approach can work. Wear an N95 mask and gloves. Scrub the wall with a solution of white vinegar or a dedicated mold-cleaning detergent, then dry it completely with a fan. The critical step is fixing the moisture source. Check for any leaks, but more likely, you need to improve air circulation in the closet and potentially add a dehumidifier to combat the high ambient humidity.

However, if the mold covers more than roughly one square meter, has a strong musty odor, or if the drywall feels soft and compromised, a professional assessment is strongly advised. In older buildings, the mold behind the wall can be far more extensive than what is visible. Professionals use moisture meters and thermal cameras to find the full extent and ensure the wall cavity is properly dried to prevent rapid regrowth, which is highly likely in our climate.

The cost for a job this size varies significantly based on the extent of the damage found behind the surface. You can expect to request an assessment to get an accurate scope and quotation. Look for providers who can explain the science behind their process and provide verification, such as before-and-after moisture readings, not just a visual cleanup.
Posted by Sani Admin
Answered on April 28, 2026 10:50 pm