Increasing height of retaining wall As the title suggests. I am looking to inscrease the height of my new retaining wall by 2 feet to make it four feet. Does anyone have any experience with this? Can't find anything online. Do I need to ensure I scrape out all top soil above currently and replace with gravel? Or can I just put a geo fabric, new drainage, and more gravel behind to inscrease the height Originally by u/Khooper803 on Reddit: https://tinyurl.com/yoz9q6p4