During the inspection, what can be a sign of inadequate drainage?

Pooling of water in specific areas is a clear indication of inadequate drainage. When water collects on the roof rather than draining away effectively, it suggests that there are issues with the roofing system, such as blocked drains, slope deficiencies, or insufficient drainage design. Prolonged water pooling can lead to structural damage, leaks, and accelerated deterioration of roofing materials.

In contrast, the presence of roof tiles doesn't directly indicate drainage issues; it relates more to the roofing material used. Chipping paint on facades could be a sign of water intrusion or other problems but does not directly reflect drainage performance on the roof itself. Lastly, clean roof surfaces typically suggest proper maintenance and functioning drainage, as debris that could impede drainage would likely lead to pooling. Hence, the observation of water pooling is the most definitive sign of drainage concerns.