ATLANTA--(BUSINESS WIRE)--Belgard®, the leader in outdoor living essentials, announces the availability of its newest retaining wall system, Diamond Pro® Air. Designed with a cutting-edge locator ...

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 ...