For a tidy and finished look to your garden, concrete garden edges are the answer. They can be made to suit any garden shape and to any width. The most common sizes range from 100mm - 150mm. Just define the area with either string or chalk and you're ready to start.
You Will Need:
string or chalk
metal sheeting for formwork (if garden has curves)
Dig a trench approx 100mm deep and 150mm wide to the desired length of the garden and level by using a spirit level.
Note: Dig trench wide enough to allow for formwork. Remember, concrete should finish approx 100mm wide.
Next, box the area with formwork. For curves, use flexible material the same size as the formwork to box in the curves. Make sure the desired height of the garden edge is the same height as the formwork. Soak the trench with water to minimize the soil drawing water from the fresh concrete.
Mix Concrete and fill the boxed area to the top of the formwork. Lightly pre wet the area, prior to placing concrete. To rid the concrete of any air bubbles, tightly compact the area using a shovel. Level surface by using a wooden float. For larger garden areas, it is easier to work in small sections.
Once the concrete begins to become firm, finish it with a steel float. This will give a smooth finish.
Allow 24 hours before removing formwork. Allow to cure for 1 week.
Alternative: Instead of using concrete, you can use bricks or pavers. Prepare the trench as in Step 1 and fill with enough concrete to allow you to sit a brick or paver on top so that it finishes flush with the forwork. lay the concrete first and allow it to partially set, then lightly tap the bricks/pavers in place. "Butter" the ends prior to laying with Blue Circle Southern Cement Brickies Mud to fill the gaps or joints between the bricks. Use a spirit level to keep the bricks at the same height.