Question

We noticed that our terrace's tiled floor had several cracks and was no longer level. Note that we haven't used this in a long time and we made it as a storage room. What is the cause of this, and what can we do about it?

Answer 1

Cracks and unevenness in a terrace's tiled floor can be caused by various factors. Here are some possible causes and steps you can take to address the issue:

1. Foundation settling: Over time, the ground beneath the terrace may settle, causing the concrete or supporting structure to shift. This movement can lead to cracks and an uneven floor. If this is the case, you may need to consult with a structural engineer or a contractor to assess the extent of the settlement and determine the best course of action.

2. Poor installation: If the tiles were not properly installed or if there were errors in the substrate preparation, such as inadequate compaction or improper adhesive application, it can result in cracks and an uneven surface. In this situation, you might need to remove the existing tiles and reinstall them correctly, ensuring proper substrate preparation and tile installation techniques.

3. Water damage: If water has infiltrated the terrace over time, it can cause damage to the underlying structure, leading to cracks and unevenness in the floor. Ensure that the terrace has proper drainage systems in place to prevent water accumulation, and consider waterproofing measures if necessary. Repair any damaged waterproofing layers and address any underlying moisture issues.

4. Structural issues: If the terrace's supporting structure, such as beams or columns, has deteriorated or suffered damage, it can result in a compromised floor. Engage a professional to inspect the structural elements and provide appropriate repairs or reinforcements as needed.

5. Thermal expansion/contraction: Temperature fluctuations can cause expansion and contraction of the materials used in the terrace, which may lead to cracks over time. While this is a natural occurrence, it's important to ensure that expansion joints are present and properly maintained. Expansion joints accommodate the movement and can help reduce the likelihood of cracking.

To address the situation, it's advisable to consult with a professional contractor or structural engineer experienced in terrace construction. They can evaluate the specific circumstances, identify the underlying cause, and recommend the most appropriate remedial measures. Taking a proactive approach will help ensure the long-term stability and functionality of your terrace.