Whether you’re a renter or an owner, knowing how to patch up a damaged wall will save you time and money. You can do it! Credit... Supported by By Tim Heffernan Photographs and Video by Clark Hodgin ...
Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 to 8 ...