I called a couple of weird roofing suppliers after I noticed some water pooling on the roof of the building, however i manage the apartment building which has 24 units! Six of the apartments have a single living room and a single bathroom, and they are rented as efficiency units. Six of the apartments have numerous living rooms and a single bathroom. The two of us have a couple of small families in these apartments plus some single people or roommate situations. The other 12 units in the apartment building are all multiple living room and numerous bathroom apartments. The apartment building is quite large; Most of the time all 24 units are rented and leased. I often have to deal with troubles inside of the apartments appreciate troubles with the a/c unit, radiator heaters, dishwashers, and garbage disposals. One of our tenants called myself and others because she said there was water leaking down the window in her living area. The window is facing the street and it had not rained in multiple afternoons. The first thing I did was go up to the roof. I went to the section above the spot where the tenant was complaining about a water leak. There was a problem with the rubber asphalt roof. I could see there was a bubble and a small amount of water pulling at the area. I immediately called the commercial roofing supplier that handles all of our troubles. There should not have been a bubble in the rubber asphalt roof and I knew that was a sign of trouble! After the supplier tore up part of the rubber asphalt roof, it was easy to see the leak.