The ideal concrete mix for a UK garden path is a C25 strength grade (ST5), which typically uses a 1:2:3 or 1:2:4 ratio of cement, sand, and aggregate.

  • Standard DIY mix: A ratio of 1 part cement, 2 parts sharp sand, and 3 parts 10-20mm aggregate is a reliable “strong mix” for paths exposed to British weather.
  • All-in Ballast: For simpler mixing, use 1 part cement to 4 or 5 parts all-in ballast.
  • Crack prevention: To stop your path from cracking during winter freeze-thaw cycles, keep the water-cement ratio below 0.45; too much water makes the concrete easier to pour but significantly weaker once cured.
  • Expansion joints: Install control joints every 2.5 to 3 metres to manage natural expansion and contraction, preventing unsightly random cracks.