Abstract: A system and associated method applies a fluid to a surface. In particular, the system applies a roof surface covering to an existing roof location of a building. The system includes a pump for providing a pressurized source of fluid, a fluid conduit for extending from the pump to the roof location and delivering the fluid to the roof location, and an applicator device for applying the delivered fluid to the roof location to provide a portion of the applied roof surface. The system also includes a granule supply device for proving loose granules, a granule conduit for extending from the granule supply device to the roof location and delivering the loose granules to the roof location, and a dispenser for dispensing the loose granules onto the applied fluid on the roof location to provide another portion of the applied roof surface. The pump may be a peristaltic pump and the fluid does not directly engaging any surface of the pump. The applicator device may include a roller.