Unfortunately, drying a mortar bed under tile after it has already gotten wet is not a reliable or recommended option. There are several key challenges that make it difficult, if not impossible, to achieve proper drying and prevent future problems:
- Limited access: Once the tile is installed, accessing the mortar bed underneath becomes very difficult. Traditional drying methods like ventilation and using dehumidifiers are largely ineffective as they cannot reach the trapped moisture within the mortar bed.
- Moisture migration: Even if you manage to dry some of the surface moisture, water within the mortar bed can travel and accumulate in other areas, leading to mold growth, structural damage, and potential delamination of the tile.
- Potential for damage: Attempting to remove tiles to access the mortar bed for drying carries a high risk of damaging the tiles and requiring replacement, potentially adding to the overall cost and hassle.
Considering these challenges, the recommended course of action when a mortar bed gets wet under tile is to remove the affected tiles and mortar bed, allow the subfloor to dry completely, and install a new mortar bed and tile. This ensures proper and controlled drying, eliminates the risk of future problems, and provides a safe and healthy foundation for your tile installation.
While it may seem like a more extensive and expensive option initially, attempting to dry a wet mortar bed under tile often leads to further complications and additional costs down the line. Consulting a qualified professional like a water damage restoration company or experienced contractor can help you assess the situation and determine the best course of action for your specific case.