things. waterproofing only has a useful life and after a period of time, you have to replace it. the north building, i think, last year or the year before, replaced all the waterproofing. the issue is when water gets into a crack, all concrete cracks, it s made to crack. water gets into a crack. in the north, you worry about it freezing and thawing, because when water freezes, it expands and that makes the crack bigger. then you can get rust in the reinforcement steel. when rust gets in the reinforcement steel, at first glance it might look severe, but remember, it s an expanded material. you take a wire brush and you brush off that rust and you might find you only lost a 16th