Uneven concrete is one of the biggest challenges when installing outdoor tiles, especially on terraces, rooftops, and balconies. Traditional methods require screeding or applying thick layers of mortar, which can be time-consuming, messy, and difficult to get perfectly level. A more efficient solution is to use an adjustable support system that allows you to place tiles on top while fine-tuning the height at each point. This makes it easy to achieve a perfectly level surface even if the concrete below is sloped or irregular. In addition, the raised setup creates a gap beneath the tiles for proper drainage, airflow, and protection of the waterproofing layer. The result is a clean, precise, and durable outdoor flooring finish without the need for major surface correction work.