In extreme cases, renting a boom truck can save a lot of time and effort. Flat Roofs Do everything twice as well as you might think. Flat roofs leak. It is only a matter of time before a flat roof leaks. Obviously the chances for a leak are greater when water can gather in one place.
Flat roofs have benefits also, but take extra care when repairing a flat roof.
Three course all open seams. Understand the way the water is flowing, and do not create a dam which will hinder water runoff. Keep all drains and scuppers clear of debris. You do not want water to build up on a flat roof. Top coats, and similar products, can extend the life of a flat roof.