How to Lay a Concrete Footpath

Materials and Tools You'll Need

Step-by-Step Guide

1. Plan Your Path

Mark out the desired path using stakes and string to create a clear outline.
Ensure the path is at least 75mm thick and incorporates a slight slope to allow water runoff and prevent pooling.

2. Prepare the Ground

Excavate the area to a depth of 100-150mm, ensuring the surface is even.
Lay a layer of gravel, crushed rock or compacted sand and soil (50mm thick) and compact it firmly using a hand tamper or plate compactor to create a stable base.

3. Set Up the Formwork

Install timber or metal edging along the marked outline to create the formwork.
Secure the formwork with wooden stakes spaced 500mm apart. Double-check that everything is level, straight, and follows the intended shape of the path.

4. Mix and Pour the Concrete

Prepare the concrete according to the manufacturer's instructions. If mixing manually, ensure the consistency is thick but workable.
Pour the concrete evenly into the formwork in manageable sections, spreading it with a shovel to fill all gaps.

5. Level and Finish the Surface

Use a screed or flat board to level the concrete, moving it back and forth over the surface to achieve an even layer.
Smooth the surface with a trowel for a clean finish or use a broom to create a textured surface for better slip resistance.

6. Curing and Maintenance

Cover the footpath with a damp cloth or plastic sheet for 24-48 hours to retain moisture and prevent cracks during curing. You can use a weep hose to help in particular hot environments.
Avoid walking on the footpath for at least 7 days and allow 28 days for the concrete to reach full strength.

Additional Tips for Success

Work in manageable sections: For longer paths, divide the work into smaller sections to prevent the concrete from setting before it's finished.
Add expansion joints: Insert expansion joints every 2-3 metres using a grooving tool or strips of wood to prevent cracks caused by temperature changes.
Check for weather conditions: Avoid pouring concrete in extreme heat, cold, or rain, as these conditions can affect curing and strength.
Reinforcement for heavy loads: If the path will bear heavy loads (e.g., wheelbarrows or carts), consider adding steel mesh or rebar for extra reinforcement.

Common Mistakes to Avoid

Uneven surfaces: Ensure the ground and base are level before pouring concrete.
Rushing the curing process: Proper curing is essential to achieve a durable surface. Avoid shortcuts during this step.
Inadequate base preparation: Skipping the gravel base can result in sinking or cracking over time.

By following these steps and tips, you'll be able to lay a durable and functional concrete footpath that enhances your outdoor space.