Calculating the materials you will require
Allow 12 boards per m for 100mm boards, 10 boards per m for 125mm boards and 8 boards per m for 150mm boards. Allow 2 rails for the 1.2m high fence and 3 rails for 1.5m and 1.8m fences. Remember that end and corner posts are available for the ready-machined posts (v-notched, recessed and morticed).