Is hidden mold causing our coughing and headaches?« Back to Previous Page

Yes, hidden mold like the black growth under your silicone sealant is a very likely cause of the persistent coughing and headaches you're describing. The symptoms, especially worsening after showering, strongly correlate with exposure to mold spores and microbial volatile organic compounds (mVOCs) released into the air. In a confined, humid space like a windowless bathroom, these concentrations become significant.

For a lasting solution, surface cleaning is insufficient. The mold's root system (hyphae) penetrates porous surfaces like grout and drywall. The most effective remediation involves physically removing the contaminated silicone sealant and any affected porous materials. After removal, the area must be thoroughly dried and treated with an EPA-approved, fungicidal coating before applying new, high-quality mold-resistant sealant. Given the extent of hidden growth and the health symptoms, a professional assessment is strongly recommended to evaluate potential spread behind walls. Companies with their own microbiology labs can provide air and surface sampling to identify the specific species and confirm the space is safe after remediation.

To prevent recurrence, address the source of moisture. Upgrade your exhaust fan to a model with a higher CFM (cubic feet per minute) rating and ensure it runs for at least 20 minutes after every shower. Consistently wiping down wet surfaces and using a dehumidifier can also help measurably reduce the humidity that allows mold to thrive in Dubai's climate.