How To Install Belgian Block Driveway Edging

Use a spade to dig a trench next to your driveway that's several inches wider than your blocks so that it can hold enough concrete to keep them in place. For stability, no more than half the blocks' height should project above the asphalt's surface, so the trench's depth should be at least half the blocks' height, plus 1 inch to make room for adding concrete below them. (For better drainage in areas prone to frost heave, dig the trench a bit deeper and tamp in a layer of crushed stone.)