Finding condensation on your basement walls is common. Its still extremely important to figure out whether this is from condensation or a leak in your basement wall. There is a simple procedure that any homeowner can do that helps with this process. First, wipe away the condensation from the wall, so that an area is completely dry. Then, duct tape a piece of foil onto the dry area, making sure that the foil hasn’t torn and that every side is completely covered in tape. Leave the tin foil untouched for at least 24 hours then go back and examine it. If the tin foil is wet on the inside, then the leak is coming from the wall, if it is wet on the outside, then it is just condensation. If the leak is in the wall, immediate steps need to be taken before costly repairs are needed. There are simple steps to fixing cracks in basement walls, as outlined in previous twip of the day’s. Mar-flex recommends DryPatrol if professional help is needed to fix the problems.