"When your house was constructed and your basement was dug out, land that was compressed for long periods of time was distressed. That soil is generally mostly clay, which does not permit water to percolate through it easily. Instead, water veins develop in the clay soil, encircling the walls of your lower level. After a period of time, the external coating on your basement walls wears away and water settling into the earth from rain forces itself through these walls through lateral pressure. Posted over a year ago

link Posted over a year ago