What is a common example of an invisible defect in construction?

An invisible defect in construction refers to a flaw that is not immediately apparent and may not be visible upon initial inspection. Improper installation exemplifies this type of defect because it can lead to significant structural problems that develop over time, yet may not be obvious right away. For example, faulty installation of plumbing or electrical systems could function correctly initially, but may lead to leaks or electrical failures down the line.

The other options tend to either describe issues that are generally visible or observable, such as visible cracks, or they relate to maintenance concerns. Inadequate maintenance typically refers to problems arising from neglect rather than inherent flaws in the original construction process. Improper use and treatment, while possibly leading to issues, would still be observable at some point, making them less representative of invisible defects. Therefore, improper installation is particularly relevant as it highlights a foundational issue that can compromise the integrity of the construction without being immediately detected.