Black grout in shower: clean or repair in Dubai?« Back to Previous Page

The black discoloration in your shower grout is a classic symptom of mold growth, a very common issue in Dubai villas due to our extreme humidity and year-round AC use, which creates significant condensation. Bleach is ineffective as it only bleaches the surface pigments and does not address the root cause; the fungal hyphae (roots) penetrate deep into the porous grout. This is a job for a specialized remediation company, not just a cleaner or a general contractor.

In severe cases, this indicates a potential moisture issue behind the tiles. A professional inspection is critical. We use borescopes to inspect cavity walls and moisture meters to quantify the water content within the substrate. This diagnosis determines the correct solution: a surface hygienization or a full repair.

For surface-level growth, we perform a deep hygienization using EPA-approved, non-bleach fungicidal cleaners that penetrate and neutralize the mold at its root, followed by the application of a protective sealer. If moisture is detected behind the tiles, a full repair involving removal of the affected tiles and grout, treatment of the underlying wall, and re-tiling is necessary to prevent structural damage and health issues.

Costs in Dubai vary significantly based on the required solution. A professional hygienization service typically ranges from AED 1,000 to AED 2,500. A full demolition and repair project can start from AED 5,000 and increase based on the villa's finish level and tile selection.

For a definitive diagnosis and a permanent solution, I strongly recommend a professional inspection. Call our experts at 800-MOLDS (800-66537) or email hello@saniservice.com. Saniservice is equipped to handle both the inspection and remediation in full compliance with Dubai Municipality's health and safety standards.