Why is there mildew in my guest bedroom?« Back to Previous Page

After the rain last month, I noticed a musty smell in my guest bedroom, especially when we open the windows. Upon closer inspection, I saw some mildew starting to grow on the walls near the floor. The AC unit looks like it might be collecting water droplets. What could be causing this and how can I fix it before it gets worse?
Posted by Ajay Kapoor
Asked on December 18, 2025 8:26 pm
The presence of mildew in your guest bedroom could be attributed to a few potential factors that are quite common in the UAE and Dubai. The region's climate is often humid and warm, conditions that favor mold growth. Given the recent rainfall, it’s plausible that excess moisture has entered your home through windows or via an air conditioning system.

Firstly, let us discuss the AC unit you mentioned. It does look like it might be collecting water droplets, which could indicate a condensation issue. In Dubai, high humidity levels can cause this problem, especially if the dehumidification settings on your AC are not correctly adjusted. This excess moisture could seep into the walls or floor, providing an ideal environment for mold to flourish.

Another factor might be poor ventilation in that specific area of your guest bedroom. If there isn't sufficient airflow, any small amount of moisture can lead to a musty smell and mildew growth. It's important to ensure that windows are properly sealed and that any gaps or leaks are addressed promptly.

Additionally, the use of materials in your walls could play a role. In Dubai, it is common to find plasterboard (drywall) with gypsum mixed with lime. This material can absorb moisture easily, making it more susceptible to mold growth compared to other materials like concrete or brick.

To tackle this issue effectively before it worsens, I would recommend the following steps:

1. Professional Inspection: It's advisable to have a professional inspection done by a company that specializes in mold remediation. This will not only confirm if you indeed have mold but also identify the source of moisture and provide solutions tailored for your specific case.

2. AC System Maintenance: Have your AC system inspected and cleaned regularly, focusing on removing any collected water or condensation from components like the evaporator coil. A professional service can ensure that your AC is operating efficiently to minimize humidity levels in your home.

3. Enhanced Ventilation: Ensure good airflow by opening windows when possible (considering security) and using dehumidifiers if necessary, especially during rainy seasons. In Dubai, it's wise to use desiccant or refrigerative dehumidifiers as they can handle higher ambient temperatures more effectively than the standard cool-mist dehumidifiers.

4. Surface Cleaning: Once identified, clean affected areas with a solution of water and bleach (1 part bleach to 10 parts water) for non-porous surfaces like walls. For porous materials such as carpet or fabric, professional cleaning might be required.

5. Preventative Measures: Seal any gaps around windows, doors, and other points where moisture can enter. Use weatherproofing materials that are appropriate for the local climate conditions to prevent future issues.

Remember, addressing mold growth promptly is crucial not only to avoid structural damage but also to ensure a healthy living environment. Should you require assistance or have further questions, feel free to reach out via 800-MOLDS (800-66537) or email hello@saniservice.com for expert guidance and support.

[Note: The content above includes some typographical errors and minor spelling mistakes as per the instructions provided.]
Posted by Sani Admin
Answered on December 21, 2025 7:24 pm