Mold in the attic can cause health problems and structural damage if not treated promptly, especially in Montreal’s humid environments. To effectively eliminate mold, it is crucial to first identify the source of the moisture. This can include roof leaks, inadequate ventilation, or water infiltration. Once the source is identified and corrected, the affected areas should be cleaned with appropriate anti-fungal solutions. Non-porous surfaces can be scrubbed with a solution of water and detergent, followed by a clean water rinse and complete drying. For porous materials such as insulation or wood, it may be necessary to replace them if the mold is too extensive. In addition to cleaning, it is essential to improve ventilation in the attic to prevent mold from reappearing. Installing roof vents and ensuring adequate air circulation can help keep humidity levels low. Calling in professionals for a complete inspection and treatment is often recommended to ensure effective and long-lasting mold removal.