Lawn edging installation

For UK homeowners, investing in quality edging reduces long-term maintenance and protects the structural integrity of both your lawn and your borders. Whether you choose discreet steel or traditional Victorian rope-top tiles, a professional installation ensures the lines remain straight and the levels stay consistent through the changing British seasons.

What Does the Work Involve?

• Site Survey and Marking: The gardener identifies the "line and level," using string lines or spray markers to ensure straight runs are true and curves are smooth.
• Excavation: A trench is hand-dug or machine-cut to the required depth, removing turf, stones, and roots that might interfere with the edging.
• Sub-base Preparation: For heavy stone or brick edging, a sand or mortar bed is prepared to prevent sinking or shifting over time.
• Installation: The chosen material is secured. Metal edging is typically spiked into the ground, while timber might require wooden stakes and stone usually needs a haunched mortar backing.
• Jointing and Finishing: Sections are joined seamlessly to avoid gaps. The gardener ensures the edging sits at the correct height—usually slightly below the mower blade height for safety.
• Backfilling and Reinstatement: Soil is replaced and compacted, and any disturbed turf is repaired or re-seeded to leave a "finished" look immediately.
• Waste Removal: Excess soil (spoil) and old turf are removed from the site and disposed of via a licensed waste carrier.

Typical Costs

Prices for lawn edging vary significantly based on the material chosen and the complexity of the garden layout. Expect to pay more for curved designs which require more precise labour and flexible materials.

Total project costs for a standard 20-metre run typically range from £500 to £1,500 depending on whether you opt for basic timber or high-end architectural steel.

How Long Does It Take?

• Small Straight Runs (up to 10m): 3–5 hours. This includes setup, digging, and basic timber or plastic installation.
• Average Suburban Garden (20m–30m): 1–2 days. Allows for more complex curves and solid fixing methods like mortar.
• Large Estates or Stone Edging: 3–5 days. Stone sets and bricks require significantly more ground preparation and curing time for mortar.

DIY or Professional?

While installing basic plastic "push-in" edging is a viable DIY task, achieving a professional finish with steel or stone is physically demanding and technically tricky. A professional gardener has the tools to ensure perfectly straight lines and consistent levels across uneven ground.

Expert Tip: If you plan to use a ride-on mower or a heavy petrol mower, professional installation is essential to ensure the edging doesn't "heave" or sink when driven over.

Choosing the Right Tradesperson

• Check Portfolios: Look for photos of "straight-line" work. Any wobble in the edging will be highly visible once the grass grows back.
• Waste Licencing: Ensure they hold a valid Environment Agency Waste Carrier Licence if they are removing soil and turf from your property.
• Insurance: Confirm they have Public Liability Insurance (minimum £1m–£2m) to cover any accidental damage to underground pipes or cables.

Questions to ask:

• "How do you ensure the edging stays level during frost heaves in winter?"
• "Will the edging be set at a height that allows me to mow right over the top?"
• "How do you handle corners and joins to prevent them from pulling apart?"

UK Regulations

• Underground Services: Installers should check for shallow-buried cables or irrigation pipes before digging.
• Waste Management: Soil and turf are classed as controlled waste. Your tradesperson must provide a waste transfer note if requested.
• Property Boundaries: Edging must be installed entirely within your property boundary to avoid legal disputes with neighbours.

Common Problems

• Frost Heave: Cheap edging or shallow stakes can be pushed out of the ground during a hard UK frost. Ensure stakes are at least 200mm deep.
• Mower Damage: Edging installed too high will be struck by mower blades, destroying both the edge and the machine.
• Poor Drainage: Solid edging (like concrete or brick) can act as a dam. A professional will ensure there are slight gaps or "weep holes" to allow surface water to escape.
• Rusting: If using metal, ensure it is either "weathering steel" (Corten) designed to rust superficially or fully galvanised to prevent structural rot.

Frequently Asked Questions

What is the longest-lasting material for lawn edging?

Stone, brick, and high-quality galvanised steel are the most durable, often lasting 20–25 years. Treated timber typically lasts 5–10 years before rot sets in due to constant contact with damp soil.

Can I mow over lawn edging?

Yes, if it is installed correctly. "Mow-over" edging is set approximately 10mm–15mm above the soil level but below the grass height, allowing the mower blade to pass safely over it while still providing a clean cut.

Do I need a concrete foundation for my edging?

For heavy stone, granite sets, or brick edging, a small concrete or mortar "haunch" is highly recommended to prevent the blocks from shifting or sinking over time.

Is Corten steel edging messy?

Corten steel is designed to develop a protective rust patina. During the first few months, there can be some "run-off" during heavy rain which may stain light-coloured paving or gravel. Once the patina has matured, this stops.

How deep should the edging go?

Typically, at least 50% of the edging material should be below ground level to ensure stability. For timber or metal, the stakes should go significantly deeper—usually 200mm to 300mm—to anchor the run.