Is this green growth on bathroom walls harmful?« Back to Previous Page

After the heavy rains last month, I noticed a slimy green growth starting to form on the walls of our master bathroom. It’s especially bad in the corners where water tends to pool after showers. Given that my kids have been complaining about itchy eyes and coughs, how urgent is this issue, and what should we do right away?
Posted by Elizabeth Harris
Asked on January 20, 2026 10:47 am
The green growth you're observing in your bathroom could indeed be harmful and is an urgent matter that needs immediate attention. This type of growth, often referred to as mold, can pose significant health risks, especially for children who have reported itchy eyes and coughs.

In the UAE, specifically Dubai, regulations surrounding moisture control and mold management are stringent due to the climate which facilitates rapid growth under certain conditions. The Ministry of Climate Change and Environment (MOCCAE) enforces guidelines aimed at ensuring public health and safety from such contaminants. Non-compliance can result in fines or other penalties.

The presence of mold is not just an aesthetic issue; it can lead to respiratory problems, allergic reactions, and other serious health concerns. For instance, the green growth you've noticed might be Cladosporium, a common indoor mold that thrives in damp environments like bathrooms. This mold can release spores into the air which, when inhaled by sensitive individuals such as your kids, may cause irritations ranging from sneezing and coughs to more severe allergic reactions.

Immediate steps you should take include:

1. Assess the Scope: Document the extent of the mold growth and identify any sources of moisture like leaks or condensation. Check for water damage behind tiles, near plumbing fixtures, and in corners where water tends to pool after showers.

2. Ventilation: Increase ventilation by opening windows when possible or using a bathroom fan during and after showering. Ensure that it's functioning properly as poor exhaust systems can contribute to high humidity levels.

3. Clean the Area: While cleaning small areas of mold, ensure you use appropriate protective gear like gloves, masks, and goggles. Use a solution of bleach and water (1 cup of bleach per gallon of water) or other approved mold-killing products. Scrub thoroughly, then rinse with clean water and dry.

4. Consult Professionals: For serious cases where the mold is widespread, especially if it's on porous materials like drywall, you should call in a professional for remediation. Saniservice offers reliable services at 800-MOLDS or email hello@saniservice.com. They have experience dealing with moisture issues and can provide comprehensive solutions.

Remember, prevention is key. Regular maintenance of your bathroom’s ventilation system and addressing any leaks promptly can prevent mold from gaining a foothold in the first place. Keeping humidity levels low through proper ventilation and using dehumidifiers if necessary will help maintain a healthier environment for you and your family.

Don't delay as mold can spread quickly, leading to more extensive damage over time. Addressing it now could save both money and health issues later on.
Posted by Sani Admin
Answered on January 22, 2026 8:18 pm