How to Build a Garden Path – DIY Guide
Build a garden path by marking the route, excavating 150mm deep, laying a compacted hardcore base, then bedding your chosen surface material — flags, bricks, or gravel — on sharp sand or mortar. Allow 24–48 hours before use.
- Spade
- Plate compactor or hand tamper
- Spirit level
- Rubber mallet
- Builder’s line and pegs
- Tape measure
- Bolster chisel
- Club hammer
- Paving slabs, bricks, or setts
- Type 1 compacted hardcore
- Sharp sand
- Dry mortar mix or cement
- Kiln-dried jointing sand
- Landscape fabric (optional)
- Edge restraints or pressure-treated timber edging
- Stakes and fixings
Step-by-Step Guide
Mark Out the Path Route
Use builder’s line and pegs to mark both edges of the path along its full length. Keep a minimum width of 900mm for comfortable single-file use — wider if you need wheelchair access or want to push a wheelbarrow comfortably. Check the route avoids underground services; contact your utility provider or use a cable and pipe detector before breaking ground. This is also the moment to decide on fall — paths should slope 1:60 away from buildings to shed rainwater rather than letting it pool.
Excavate to the Correct Depth
Dig out the full path area to a depth of 150mm below your finished surface level — 100mm for the hardcore base, 25–30mm for the sand bed, and the thickness of your surface material on top. Remove all topsoil, roots, and debris. Where the ground is soft or prone to waterlogging, go deeper and add extra hardcore. Square off the sides cleanly using a spade so your edging restraints sit flush. If you are planning a path through a lawn area, our guide on how to lay turf covers what to do with the displaced grass.
Install Edge Restraints
Fix your edge restraints before you fill in the base — they hold the path’s shape and stop the surface material migrating outward over time. Pressure-treated timber boards (at least 50mm thick) or proprietary plastic edging both work well. Drive stakes into the sides of the excavation every 600mm and screw the edging board to them, using a spirit level to confirm each section follows your intended fall. Mortar-bedded kerb stones are another option if you want a more permanent, formal finish alongside a patio or hard-standing area.
Compact the Hardcore Base
Tip Type 1 crushed hardcore into the excavation in layers no deeper than 75mm and compact each layer thoroughly with a plate compactor — available from most hire shops — or a hand tamper for small areas. Two passes at 90° to each other gives the most uniform compaction. The finished hardcore surface should be firm underfoot with no movement, and should sit at the correct height to accept your sand bed and surface material at the right finished level. A poorly compacted base is the primary cause of sunken or rocking slabs, so do not rush this stage.
Lay the Sand Bed and Surface Material
Spread sharp sand across the compacted base to a depth of 25–30mm and screed it level using a length of timber drawn across the edge restraints. Do not use building sand — it retains moisture and will not compact properly. Lay your paving slabs, bricks, or setts from one end, keeping consistent joint gaps of 10–15mm using tile spacers or offcuts of timber. Tap each unit level with a rubber mallet, checking regularly with a spirit level and your fall. Cut any units to fit using a bolster chisel and club hammer, or hire an angle grinder with a diamond disc for cleaner cuts. For more detail on bedding flagstones, see our full guide on how to lay paving slabs .
Fill the Joints and Finish
Once all surface units are laid and level, brush kiln-dried jointing sand into the joints, working it in with a soft brush until every gap is full. For a more durable finish — especially on paths with vehicular access or heavy foot traffic — use a dry mortar mix (4 parts sharp sand, 1 part cement) brushed in dry and lightly misted with water to cure. Keep foot traffic off the path for at least 24 hours and avoid heavy loads for 48 hours. Brush away any excess material, check the edges are secure, and backfill alongside the edging with topsoil or turf. If the path runs alongside a raised bed, our guide on how to build a raised garden bed is worth reading next.
Frequently Asked Questions
What is the best material for a garden path in the UK?
Concrete paving slabs are the most cost-effective and widely available option. Clay bricks and natural stone setts give a more traditional look and last longer, but cost more. Paving slabs are the easiest for a first-time build — consistent size and thickness make laying straightforward.
Do I need planning permission to build a garden path?
In most cases, no. Permitted development rights cover garden paths used for domestic purposes. If your property is listed or in a conservation area, check with your local planning authority before starting. Guidance is available at gov.uk under householder permitted development.
How do I stop weeds growing through my garden path?
Lay landscape fabric over the compacted hardcore before your sand bed — it suppresses weed growth without blocking drainage. Keep joints well filled with jointing sand or dry mortar, as gaps are the main entry point for weed seeds. If weeds appear later, a path weeder or boiling water is effective without damaging the surface.
Can I build a garden path without cement?
Yes — a dry-laid path on compacted hardcore and sharp sand does not require any cement at all. Kiln-dried jointing sand fills the gaps and the weight of the slabs holds everything in place. This method is actually easier to repair if a slab ever needs lifting. For a gravel path, cement is not needed at all.
How wide should a garden path be?
A minimum of 900mm is comfortable for single-file pedestrian use. Allow 1,200mm if two people need to walk side by side, or if you regularly use it with a wheelbarrow or garden trolley. Wheelchair-accessible paths should be at least 1,200mm wide, ideally 1,500mm.
When screeding your sand bed, cut two notches into a length of timber at the correct depth so it rests on the edge restraints and pulls a perfectly consistent bed in one pass — this is called a depth gauge screed board and it removes all the guesswork from achieving an even surface. Work in sections of no more than 1.5 metres so the screeded sand does not get disturbed as you move forward to lay.
Sources
- RHS — Hard surfaces in the garden: paths and patios — rhs.org.uk
- HSE — Safe use of angle grinders — hse.gov.uk
- GOV.UK — Permitted development rights for householders: technical guidance — gov.uk
This guide is for general information only. Always work safely and follow manufacturer instructions. DIYnut accepts no liability for injury or damage arising from DIY work.
