Poor grading results in leaky basements, moist crawlspaces and standing water that will damage your foundation. Properly grading a slope near your foundation is critical for the life of your home, but the question is simply how much is needed and how to determine if you have a sufficient quantity. The easy fact is a slope of about 5 percent (or about 6 inches for the first ten shoes. But how anyone determine this on your own? Here are many basic steps anyone can follow to verify the grading and ...