of course the water in the brick freezes if it is damp/wet there, since the insulation behind it only starts later. if the damp brick freezes, the ice could easily destroy (crack) the bricks. if new moisture always collects there after rain, the rainwater is accumulating somewhere or the downpipe has some kind of defect?!
this should definitely be addressed.
attached is a picture of our house in the first winter. moisture tends to collect on the weather side under the window because all the water that hits the glass collects there. this can be avoided with metal window sills, which are rather rare in brick houses. we have been to the expert and construction company, asked neighbors, and looked at other houses. all houses show this appearance and it is completely normal. it also depends on the brick color. some colors are visually much more prone than others.
at a corner of the house, this hardly makes sense, since no more moisture accumulates there than at any other spot. a window itself can’t absorb moisture but it drips down, where it may then collect.
otherwise nice house
