Hydrostatic pressure is pressure found within the fluid when it is at rest. The deeper down one goes in comparison to the fluid, the higher the pressure that the fluid will have. Why is this idea important when dealing with concrete? If the floor covering has not been adhered correctly to the concrete and cracks have formed, then hydrostatic pressure can cause the water to push through the cracks causing damage to the floor. The deeper down the concrete is, the more pressure that the water will place on the flooring. This can cause flooding issues, especially in basements and any flooring found below grade. Not only can damage to the floor result, but other issues such as mold can occur. In the end, it is important to keep in mind that hydrostatic pressure can affect the long-term structural stability of concrete.