There are a number of common issues that can occur in a wet room, including mould growth and increased moisture levels. Mould is often caused by excess moisture or insufficient ventilation, which then allows fungus and other microorganisms to grow. This type of bacteria thrives in an environment with low sunlight exposure and high concentrations of salts and acids. As a result, it is important to keep your bathroom dry throughout the year while avoiding excessive water usage. Furthermore, make sure you install proper ventilation systems that will effectively remove moist air from the space. Although it may not be possible to completely eliminate all sources of moisture within the bathroom walls, restricting access during periods when the room is not being used should help reduce humidity levels significantly over time. In addition, installing efficient flooring such as ceramic tiles or vinyl floors will also help absorb water from below.