Once the concrete slab was set I finished off the retaining wall, the front of it will be hidden by the office building but the back is visible to anyone coming down from the upper garden so I built a thin stone wall in front of it, then finished off the top with a concrete capping.
The top has to be level end to end for the wooden wall to join neatly, and have a slope to make sure rainwater runs away. The actual join between the planks and concrete is waterproofed with lead flashing. It’s expensive but long-lasting.
Three 150 x 50mm tanalised planks rest on the concrete beams to bring the width to 3Metres.
Before the prefabbed walls arrive the base and wall are covered with a PVC sheet, and to stop builders boots damaging the PVC I covered it with some old recycled chipboard sheets. As usual the cat turned up to keep an eye on proceedings.
NEXT – The Walls go up