Summary

Driveway edging does two jobs that are easy to underprice separately: it defines the visual boundary of the drive, and — for block paving and gravel surfaces in particular — it structurally contains the surface material so it doesn't spread, rut, or wash out under vehicle loading. These are different requirements with different cost drivers, and quoting "edging" as a flat rate without distinguishing decorative edging from structural edge restraint is where most pricing disputes on this job start.

For block paving, edge restraint is not optional — it's a structural requirement set out in BS 7533-3, the UK code of practice for laying small element pavements. Without a haunched restraint at the perimeter, the sand bedding layer is unconfined, blocks migrate outward under every vehicle pass, joints open up, and the whole installation fails within a few years regardless of how well the rest of the job was done. This is covered in detail in block paving base preparation and block paving — this guide focuses on pricing the edging work itself, whether as part of a full driveway job or as a standalone repair/upgrade to an existing drive.

For resin-bound, gravel and some tarmac driveways, edging is more often a containment and finishing detail than a load-bearing structural requirement, and the material choice (timber, steel, or precast concrete) is driven more by appearance and budget than by BS 7533 compliance. Understanding which category a job falls into — structural edge restraint vs decorative containment — is the first pricing decision to make.

Key Facts

Quick Reference Table

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Edging Type Price per Linear Metre Suitable Surface Structural (vehicle loading)
Haunched concrete (in-situ, 100×100mm) £20–£32 Block paving Yes
Precast concrete kerb (BS EN 1340), haunched £28–£45 Block paving, tarmac, resin Yes
Treated timber edging/gravel board £12–£25 Gravel, resin, bark, low-traffic No — decorative/containment only
Steel or aluminium flexible edging £18–£35 Resin, gravel, artificial grass borders Limited — not for direct vehicle load
Reclaimed/setts as edge course £30–£55 Block paving, period-property driveways Yes, when haunched
Retrofit edge restraint to existing drive £30–£55 Block paving repair Yes
Existing wall/kerb used as restraint £0 (no new material) Any, one side only Yes, if sound

Detailed Guidance

Structural edge restraint for block paving

This is the job most likely to be under-priced because it looks like "just a bit of edging" when in fact it's a structural component of the pavement design under BS 7533-3. The restraint must be haunched — concrete placed at 45° against the outside face of the kerb or edge block, extending down to the top of the compacted sub-base, not just bedded in the sand course. A restraint that only sits in the bedding sand with no haunching down to sub-base level will fail under the first few months of vehicle loading, and this failure mode (edges spreading, joints opening at the perimeter) is one of the most common block paving callbacks. See block paving for the full construction detail including compaction timing around freshly haunched edges.

Timber and steel edging — where they're appropriate

Timber and steel edging are containment and finishing details, not structural restraints. They work well on gravel driveways, resin-bound surfaces (where the resin binder itself, correctly detailed, provides much of the containment), and any area not taking direct wheel loading at the edge. Specifying timber or steel edging as the sole restraint on a block paving driveway that vehicles drive over is a common corner-cutting mistake — flag this to the customer if they've requested it based on appearance or cost without understanding the structural difference.

Retrofitting edge restraint to a failing driveway

A common repair job is adding proper edge restraint to a driveway that was installed without it, or where the original restraint has failed. This involves excavating a trench alongside the existing edge (taking care not to further disturb the adjacent surface), installing a haunched restraint tied into the existing sub-base level, and re-bedding or re-laying the disturbed edge course of the driveway surface. Price this higher than new-build edging per linear metre because of the careful excavation required next to an existing surface, and inspect the sub-base condition first — if it's failed generally, edging alone won't fix the driveway; see driveway resurfacing pricing guide for the wider reconstruction option.

Corners, curves and junctions

Curved runs (radius kerb) and corner units cost more per linear metre than straight runs — budget 15–30% more for curved sections due to the additional cutting or specialist curved units required, and for junctions where edging meets a dropped kerb, a wall, or a change of surface material.

Worked example

A 25m perimeter edging job on a new block paving driveway, using haunched precast concrete kerb on three sides (20m) and an existing garden wall as the restraint on the fourth side (5m, no cost):

Frequently Asked Questions

Do I really need haunched concrete restraint, or can I just use plastic edging strip on my block paving driveway?

For a driveway taking vehicle loading, yes — haunched restraint is a structural requirement, not a preference. Lightweight plastic or steel strip edging has nowhere near the resistance to lateral thrust from vehicle tyres that a haunched concrete or precast kerb restraint provides, and block paving without proper restraint reliably fails within a few years. Plastic/steel strip edging is fine for pedestrian paths, borders, and non-trafficked gravel or resin areas.

Can I reuse the existing kerb when resurfacing a driveway?

Sometimes, if the existing kerb is undamaged and still correctly haunched — this is common on a block paving lift-and-relay job. If the kerb is cracked, has lost its haunching, or the driveway is being widened or reshaped, price new edging. Always inspect the condition of the haunching (not just the visible kerb) before assuming it can be reused.

Does driveway edging need planning permission or Building Control approval?

Edging itself does not, but it's usually part of a wider driveway project that may trigger planning permission if the overall surface is impermeable and over 5m² in a front garden, under the Town and Country Planning (General Permitted Development) (Amendment) Order 2008. Edging where the driveway meets the public highway (a dropped kerb) is a separate, licensed Section 184 Highways Act 1980 operation — see dropped kerb pricing guide.

What's the cheapest way to edge a gravel driveway?

Treated timber edging is the lowest-cost option, at £12–£25/linear metre, and is entirely adequate for containing loose gravel on a domestic driveway provided it's securely pegged. Steel edging costs slightly more but gives a crisper, longer-lasting line and resists timber's tendency to rot or warp over 8–10 years.

Regulations & Standards