For greater stability, lay edging in mortar, although it can
be laid directly into soil.
1. Excavate a trench for foundations using 6 parts all-in
ballast to 1 part cement.
2. Lay the edging in mortar (3 to 4 parts building sand to 1
part cement) against the paving or lawn. Gently tap in, using
spirit level across each edging.
3. Back fill the edging with mortar.