I am trying to buy a house with a flat roof. I initially saw the house a year ago and there was only slight problems at the time. It was clear the water was not draining properly but since it was not dealt with (vacant) it has since gotten much worse. It is now dripping from the ceiling but not yet caused massive damage. There is a crack in the living room maybe 24 inches (no bowing or water stains the water is just draining through the crack in drops). There is also now a small chunk missing in the master bath maybe the size of two fists. I had the house inspector out today and he seems to think it may need to be replaced. I don't know if there is a possible patch for this or if they can fix it as its only one section of the house (the master bath and living room are next to each other). Does anyone know what options/costs are? I have until the 11th to get all inspections done and I am having a roof inspector come out tomorrow but the house inspector is a contractor and said to be careful as most roofers want to replace an entire roof instead of just fix sections. If the roof needs to be replaced (possible I supposed but the damage doesnt seem that drastic yet). What is the cost and what are the options to replace a flat roof.