Edge & Structure
A clean, stable patio border that holds soil in place and keeps every slab sitting level.
What Goes Wrong
The most common failures come from skipping the ground checks, not from the choice of material.
An edging course set directly into topsoil will rock and sink within a season, especially on Cambridgeshire clay.
A compacted hardcore base beneath the edging course keeps it level and prevents seasonal movement in clay ground.
Water pooling behind a retaining wall builds up ground pressure and pushes the wall forward over time.
A drainage channel at the wall’s base relieves water pressure before it can stress the mortar joints or footing.
A simple edging course cannot hold back soil on a sloped plot; it spreads outward and the patio edge collapses.
The ground level and degree of slope are checked first so the right structure, edging or mortared wall, is specified.
Retaining walls over 1 metre or near a boundary can trigger Building Regulations or the Party Wall Act if not flagged early.
Wall height and boundary proximity are assessed at survey stage so any regulatory requirements are factored into the quote.
Scope of Work
From a simple brick edging course to a mortared stone retaining wall, the right solution depends on the level change and ground pressure involved.
Mortared brick edging course set on compacted hardcore to define the border and stop soil creep.
Mortared natural or reconstituted stone walling to hold a level change and complement existing garden materials.
Concrete edging units on a hardcore base for a durable, low-maintenance patio perimeter.
Pressure-treated timber boards set into the ground to create a clean, informal patio border.
ACO-style drainage channel at the base of a retaining wall to relieve water pressure behind the structure.
Assess slope, soil type and drainage before specifying the structure.
Correct backfill and mortar jointing to finish the wall cleanly.
Structural edge to hold a raised terrace level against ground pressure.
Edge & Structure
Soil creeping onto paving needs an edging course; a level change that pushes against the patio needs a mortared retaining wall.
Edging is the right solution where the patio border is undefined or where soil is spreading onto the surface. A brick, stone, or concrete edging course is set on a hardcore base and mortared in place to hold the perimeter. This also gives the patio surface a clean, finished line and prevents the outer slabs from shifting outward over time.
A retaining wall is needed where there is a meaningful level change, a raised bed, a sloped garden, or a raised terrace, that exerts ground pressure against the patio edge. Cambridgeshire clay soils can shift seasonally, so the wall foundation depth and drainage behind the wall are both checked before any brickwork starts. A drainage channel at the base of the wall prevents water building up behind it.
Where a retaining wall exceeds 1 metre in height or sits close to a boundary, Building Regulations or the Party Wall Act may be relevant. This is factored in from the survey stage, not raised after work has started. The quote covers hardcore base, foundation, mortared walling, backfill, and any drainage channel as separate line items.
Why Choose Us
We schedule a survey of Huntingdon ground conditions, and the full scope is quoted upfront.
Level, drainage and soil are checked before materials are specified or the job is priced.
Base, mortar, drainage and walling are quoted individually so you see exactly what each element costs.
Wall height and boundary checks happen before work starts, not after the quote is accepted.
Surveys across Huntingdon, Godmanchester, St Ives and Brampton account for the local ground.
Brick, stone, concrete or timber is recommended based on the specific level change and ground pressure present.
The Process
01
Tell us the slope, what is currently at the edge, and whether soil or water is causing the problem.
02
An on-site visit checks ground level, drainage and any boundary or height considerations before a quote.
03
The agreed structure is built to spec, base, wall or edging course, drainage and backfill all completed in one visit.
Pricing Estimates
| Job | Typical cost |
|---|---|
| Simple patio edging | £250-£700 |
| Edging with kerb or border | £500-£1,500 |
| Small retaining wall | £1,200-£3,000 |
Describe the edge, the slope and what is causing the problem, and we will schedule a ground survey. Base, materials and drainage are quoted as separate lines.