Is green tinge on wall from fog harmless?« Back to Previous Page

After the heavy fog we had last week, I noticed a strange greenish tinge on the back wall of my bedroom. The paint doesn't seem to be chipping or anything, but it’s concerning me. Have you ever dealt with something like this? Would you say it's something I can handle myself or should I get a professional involved?
Posted by David Smith
Asked on February 8, 2026 10:03 pm
Certainly. The appearance of a greenish tinge on your bedroom wall following the heavy fog could be indicative of several possibilities ranging from benign to concerning. Given the specifics of the UAE and Dubai, it's essential to consider both environmental factors and building regulations.

Firstly, the greenish hue might suggest the presence of mold or algae. In the context of the UAE, where humidity can fluctuate due to weather conditions like fog, this is not uncommon. However, the growth of certain types of mold in indoor environments could lead to health issues such as respiratory problems and allergic reactions.

In terms of regulations, according to the Building Code of Dubai (BCD), Section 7.5.2 requires the control of moisture levels within buildings to prevent deterioration and ensure occupant comfort. Given this context, it would be wise to investigate further to determine if the greenish tinge is indeed mold or another substance.

A practical first step might involve conducting a visual inspection followed by a moisture test using a hygrometer or moisture meter. If you notice any dampness behind the wall or on adjacent surfaces, it could indicate a water intrusion issue that needs addressing.

However, given the uncertainty and considering the potential health implications, especially in a densely populated area like Dubai, I highly recommend seeking professional assistance. Saniservice, for instance, offers comprehensive mold inspection services. You can reach out to them at 800-MOLDS or email hello@saniservice.com for expert advice and remediation.

In addition to addressing the immediate issue, it’s also important to review your building's moisture management strategies. Ensure that areas prone to condensation are properly ventilated and consider implementing dehumidifiers if necessary. This proactive approach can help prevent future occurrences and maintain a healthy indoor environment in line with UAE standards.

Remember, early intervention is key when dealing with potential mold issues. Ignoring the problem could lead to more extensive damage requiring costly repairs down the road.

Taking these steps should help you manage the situation effectively while ensuring compliance with local regulations.
Posted by Sani Admin
Answered on February 10, 2026 8:36 pm