ice dam can possibly kind from a combination of melting from a attic’s heat and refreezing about the colder edges (eaves) at the bottom in the roof slope.
For flat roofing, hunt for cracks or blisters within the leak https://nicolexwvy431828.atualblog.com/35259261/how-much-you-need-to-expect-you-ll-pay-for-a-good-roof-leakage-solution