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Limestone steps, stone-faced retaining walls and herringbone brick paving at Manet

Stonework & Walls

Retaining walls, garden walls, raised beds and stone steps across Devon. Built with drainage behind them, so water has a way out instead of building up.

Your project

Make the slope useful. Give the garden its edges.

Retaining walls, boundaries, raised beds and steps. We look at what the wall needs to hold, how the water leaves and what the ground can support before choosing the construction.

  • Retaining and garden walls
  • Stone steps and raised beds
  • Repairs to existing stonework

A free visit and a written quote. No obligation to go ahead.

Where it goes wrong

A leaning wall is not a stone problem

Drive around Devon and you will see them. Garden walls with a bulge in the middle. Retaining walls tipping slowly forward. Stone that has clearly moved and is still moving.

Almost none of that is the stone failing. The stone is usually fine. What failed is behind it, and it is nearly always water.

A retaining wall does not hold back soil. It holds back soil and everything the soil is currently holding.

Behind the stone

The face is only the beginning.

Open the structure, then choose any part of it to look closer.

Stone face

The finish you see.

The part you choose, and the only part you will ever look at. It carries its own weight and very little else, which is why a wall that has moved is almost never a stone problem.

Structural core

The wall behind the wall.

This is the part doing the structural work. It holds the bank — and everything the bank is currently holding — so the stone on the front never has to.

Drainage

Where the water goes.

Free-draining stone, a membrane so fine soil cannot silt it up over the years, and a route out at the bottom. Water that can leave is water that is not pushing.

Retained ground

What the wall is holding.

Dry soil pushes against a wall with a certain force. The same bank after a wet Devon winter pushes a great deal harder, because the water in it has nowhere to go.

Foundation

What it all stands on.

Dug below the depth frost reaches, and dug to suit the ground rather than to a standard number. Clay and shillet do not behave the same way.

Conceptual retaining-wall section. Illustration only, not a construction detail or to scale. Foundations and drainage must suit the wall and the ground.
A retaining wall under construction, with stacked stone facing being built against the blockwork core and coping already laid along the top.

The load

Wet ground weighs a great deal more than dry ground

A bank of dry soil pushes against a wall with a certain force. Saturate that same bank after a week of Devon rain and the force goes up sharply, because the water has nowhere to go and starts pushing in its own right.

Clay makes it worse. It holds water and swells as it does. Then a hard frost arrives and the whole saturated mass expands again.

That is the load a retaining wall actually deals with. Not the weight of the earth on a dry day in June, but the weight of it in February.

The answer

Give the water somewhere to go

Managing that water is one part of the structure, alongside the footing, the wall itself and the ground it retains.

Soil against stone

Backfilled straight up against the masonry. Water collects, pressure builds every wet month, and the wall spends its whole life being pushed. It usually takes a few years, and then it goes.

Drainage behind

Free draining stone behind the wall, a membrane so fine soil does not silt it up over the years, and a route out at the bottom. The water leaves instead of building up.

On a low garden wall that is not holding anything back, none of that applies and it would be a waste of your money. On anything retaining a bank, it is the whole job.

Foundations

What the wall stands on

Footings go below the depth frost reaches, dug to suit the ground rather than to a standard number. Clay and shillet do not behave the same way, and a footing that works in one will not necessarily work in the other.

This is groundwork before it is stonework, which is the part Graham came from.

Height

Where a wall stops being a garden job

The height of the retained ground matters, but so do the soil, drainage and anything loading the ground above. We assess those together rather than deciding from height alone. Walls near a road or neighbouring structures can involve additional requirements, which need checking for the particular site.

We will tell you which category your wall falls into before we price it. Where a wall genuinely needs engineering input, we arrange it rather than gloss over it. It is not the exciting answer but it is the right one, and a retaining wall failing is not the kind of thing you want to be relaxed about.

What we build

Walls, beds, steps and edges

Retaining walls to hold a bank, level a sloping garden, or turn ground you cannot currently walk on into terraces you can.

Garden and boundary walls in stone chosen to suit the house rather than the catalogue.

Raised beds built in stone, rather than timber left to rot in wet soil.

Stone steps. Cut stone on a mortared base, with every riser the same height. Steps that vary are steps people trip on, and getting them consistent across a slope is groundwork before it is stonework.

Repairs to existing stonework where the original has moved or the pointing has gone.

The finish

Pointed, or laid dry

How the joints are finished changes the whole character of a wall.

Mortared joints, struck and finished neatly, where the wall needs the strength. Or laid tight with no visible mortar at all, where the customer wants that dry laid look and the material will carry it.

Both are proper ways to build. Which one is right depends on the wall, the stone, and what you want it to look like in twenty years.

The stone

Choosing it

Some customers know exactly what they want and order it themselves. Others would rather we sourced it. Either works.

If you want an opinion we will give one. What matters is what the house is built from, whether the stone will weather to look like it belongs, and how it behaves in a wet winter.

What it costs

No price list, and here is why

A wall price depends almost entirely on things you cannot see in a photograph. How much ground is being retained. What that ground is made of. Whether a machine can reach it, or whether every stone goes in by hand.

So we come and look, at no charge and with no obligation. Most jobs are quoted at a fixed price for the work listed. If an hourly rate suits the job better, we agree the rates and how materials will be charged before starting. If something unexpected means extra work, we stop and agree the work and price with you in writing before continuing.

The steps formed and levelled in concrete, ready for the limestone to be laid over the top.
The steps Manet

On site / Exton

The structure behind a finished set of steps.

At Manet, the steps were formed and levelled before the limestone went on. The project record shows both the construction and the finished work.

Explore the Manet project

In progress · Built to the customer’s design

Want a price for your garden?

We come out, look at the space and give you a written quote. No charge and no obligation.

Peace of mind

Work we stand behind

If something is not right with our workmanship, speak to Graham. We come back and put it right. Any material warranties are subject to the supplier or manufacturer's terms.

Where we work

Okehampton and across Devon

We work from Okehampton out towards Crediton, Exeter, Exmouth and the Exe valley. If you are not sure whether you are in range, just ask.