Can high humidity cause a musty smell in basement?« Back to Previous Page

After the rain last month, I noticed a musty smell coming from the basement where we store all the boxes of old furniture. It’s particularly noticeable when the door is open, and it seems to get worse whenever there’s any change in humidity. What can I do to prevent this smell from returning?
Posted by Hamad Al-Rashid
Asked on March 4, 2026 1:03 pm
High humidity indeed can cause a musty smell in your basement. In the context of the UAE and specifically Dubai, where we often experience significant temperature fluctuations and varying levels of humidity, it's crucial to understand that excess moisture is one of the primary culprits behind this unpleasant odor.

In Dubai, due to its arid climate with occasional heavy rains during the monsoon season, basements are particularly vulnerable. The musty smell you're experiencing is likely attributed to mold growth, which thrives in environments where humidity exceeds 70% and there's an adequate food source like wood or cardboard boxes. In your case, storing old furniture in a basement can provide these ideal conditions.

To address this issue effectively, it would be advisable to undertake several steps:

Firstly, professional inspection is recommended to assess the extent of mold growth and ensure no hidden moisture issues exist. In Dubai, companies such as Saniservice (call 800-MOLDS or email hello@saniservice.com) offer comprehensive inspections which can help identify problem areas.

Secondly, addressing high humidity levels directly by using dehumidifiers is key. Given the climate in Dubai, it's common to experience spikes in relative humidity, especially after rain. Employing a dehumidifier with a capacity of at least 50 liters per day for your basement space can significantly reduce moisture and inhibit mold growth.

Additionally, ensure proper ventilation by opening windows or using exhaust fans when possible, but be mindful not to expose the area directly to external elements which could increase humidity levels. Sealing gaps around doors and windows can also prevent outside air from entering and carrying in additional moisture.

Regular cleaning of the basement with a focus on areas that are consistently damp is important. This includes removing any standing water or wet materials promptly. Using mold-resistant paints and sealants can help prevent future issues.

Lastly, maintaining good indoor air quality through regular inspections and proactive measures like dehumidification will not only tackle the musty smell but also improve overall environmental conditions in your home, aligning with UAE building regulations that emphasize sustainable practices and healthy living environments.

By taking these steps, you should be able to mitigate the musty smell and create a more comfortable storage space for your old furniture.
Posted by Sani Admin
Answered on March 6, 2026 2:38 am