Foundation Conditions in Orleans
Orleans, in Ottawa’s east end, sits on Leda clay – the sensitive marine clay left behind when the Champlain Sea covered the region roughly 12,000 years ago. Leda clay loses strength and shifts when it takes on water, and that movement is a documented cause of cracked walls, bowing basement walls, and uneven settling in the area. Because the clay’s behaviour depends heavily on moisture, drainage and grading around an Orleans foundation matter as much as the repair itself.



