Cracks in brick walls are common. Figuring out whether or not they are serious and why they are happening can be challenging. Crack monitors can be installed to help document which way the wall is moving and how fast. We recommend that the monitors be left in place for at least a year, or until the movement becomes alarming. It is important to know if the wall movement is attributable to natural seasonal temperature changes or possible foundation settlement. Knowing why the wall is moving lets us determine what the proper repair should be. Sometimes a simple caulk joint can be the right fix, or a more expensive foundation underpinning project make be required.