E.R.D Paving — Blyth, Northumberland

Garden Walls & Brickwork
Built on Proper Footings
in Blyth & the North East

Retaining walls, boundary walls, planters and steps built with real foundations, drainage behind and correctly bedded copings — not a single skin of blocks laid on a strip of mortar that bows out within two winters.

The Structures That Hold a Garden Together

Walls, steps and brickwork are the skeleton of a landscaped garden. They hold back changes in level, define boundaries, form raised beds and planters, frame patios and turn a sloping plot into a sequence of usable terraces. Get them right and everything else — paving, lawn, planting — sits comfortably. Get them wrong and you have a structural problem that eventually takes the paving and the planting with it.

There is a fundamental difference between a free-standing wall and a retaining wall, and it is where most garden wall failures begin. A free-standing boundary wall only has to carry its own weight and resist wind. A retaining wall has to hold back saturated soil, which exerts enormous lateral pressure — a metre of wet ground pushes far harder than most people imagine. Retaining structures need mass, reinforcement or both, plus drainage behind them, and they need a footing sized for the load.

We build in facing brick, natural and reconstituted stone, dense concrete block rendered or clad, gabion baskets and treated timber sleepers, across Blyth, Bedlington, Cramlington, Morpeth, Whitley Bay and the wider North East. Material choice is driven by the property as much as by budget: a Victorian terrace in North Shields calls for something quite different to a new-build in Cramlington, and we will always match brick and mortar colour to what is already there rather than to whatever is easiest to source.

Most of our wall work happens as part of a larger project — terracing a sloping garden, forming a raised patio, building steps between levels, or creating raised beds along a new driveway. Because we handle the groundworks, drainage, paving and planting as well, the structures are designed to work with everything else on site rather than being built in isolation and worked around later.

Why Garden Walls Bow, Crack and Collapse

No proper footing is the most frequent cause. A garden wall needs a concrete foundation below the depth affected by frost and seasonal ground movement — typically 450mm or deeper depending on the soil and the height of the wall. Walls built on a shallow bed of mortar or a couple of courses of blocks laid on topsoil settle unevenly, and stepped cracking appears within the first year or two.

Missing drainage behind retaining walls is the most damaging error. When water cannot escape from the retained ground, hydrostatic pressure builds behind the structure and adds enormously to the load it was never designed to carry. This is why so many retaining walls bow outwards at mid-height and eventually fail after a wet winter. Weep holes, a drainage layer of clean stone and a perforated land drain running to an outfall are not optional details.

Single-skin retaining walls are simply the wrong structure for the job. A half-brick wall holding back a metre of soil has no mass to resist overturning. It may stand for a season or two, but the failure is a question of when, not if. Retaining structures need adequate thickness, reinforcement and, where appropriate, piers or a stepped footing.

Wrong mortar specification causes slow, quiet damage. Mortar that is too strong for the masonry forces cracking through the bricks themselves rather than through the joints. Cement-rich mixes on soft older brick, common on period properties across North Shields and Wallsend, cause spalling as trapped moisture freezes within the brick face rather than escaping through the joint.

Finally, missing or badly bedded copings expose the top of the wall. Without a coping that oversails the face and throws water clear, rain saturates the wall from above, freezes in the joints, and blows the brick faces off. It is the cheapest detail on the whole structure and the one most often left out of a low quote.

How We Build Garden Walls

What Well-Built Structures Give You

Materials, Heights, Costs and Regulations

Cost is driven by height, thickness, material and whether the wall retains ground. As a broad guide across Northumberland, a free-standing single-skin boundary wall in facing brick runs roughly £180 to £280 per linear metre for a low wall including footings and copings. Retaining walls are substantially more — typically £350 to £600 per linear metre depending on retained height — because of the excavation, mass, reinforcement and drainage involved. Sleeper walls and gabions are usually cheaper alternatives where the aesthetic suits, and rendered blockwork sits between the two.

Height brings regulation. Under permitted development, a wall next to a public highway is generally limited to one metre, and elsewhere to two metres, above which planning permission is normally required. Retaining walls over a certain height, or those affecting a neighbouring property, may also engage Building Regulations, and any work to a shared boundary wall can fall under the Party Wall Act. We flag all of this at survey stage so there are no surprises once the trenches are open.

On materials, facing brick is the traditional and generally the most attractive option for front boundaries, and matching an existing brick is largely a question of colour, texture and mortar. Natural stone suits rural and older properties around Morpeth and the Northumberland villages, and can be built as random rubble or coursed. Dense concrete block is the workhorse for retaining structures and can be rendered, painted or clad in stone or porcelain. Timber sleepers create informal, contemporary raised beds and low retaining edges quickly, though they have a finite life compared with masonry. Gabion baskets suit larger retained heights and drain freely by their nature.

Steps deserve the same structural care as walls. Treads should be a consistent going of around 300mm with risers no more than 150 to 170mm, laid on a concrete base rather than on compacted soil, with a slight fall so water sheds off the nose. Inconsistent riser heights are both the most common fault and the most common cause of garden trips. Where steps run between terraces we build them into the retaining structure rather than bolting them on afterwards.

Maintenance is minimal but not zero. Keep vegetation and self-seeded shrubs off the face and out of the joints, clear weep holes if they silt up, and re-point localised areas as pointing weathers back — typically after 20 years or more on a well-built wall. Watch for any new stepped cracking, bulging or leaning, and get it looked at early; a small movement caught quickly is usually a repair, while the same movement ignored for three winters is a rebuild.