ᐅ Sloped Roof on Garage – Ponding Water Issues

Hello! I have a garage built in 1965 located in a garage lot. Unfortunately, water is leaking into the garage through the sloped roof. There is a large puddle forming at one spot on the garage roof. Before applying a new waterproof membrane, I want to level out this depression somehow. The lowest point of the dip is about 2 cm (0.8 inches) deep. Do you have any ideas?

Regards, padrinoxy

There are loose-fill materials where the "granules" are coated with bitumen. These are intended for flat roof profiling and are probably exactly what you are looking for. These loose-fill materials need to be compacted and then retain their shape.