Manchester · Greater Manchester
Retaining wall repairs in Manchester
A garden retaining wall in Manchester holds back far more weight than it looks, and the push increases every time the soil behind it gets wet. Most leaning or bulging walls turn out to have poor drainage, thin construction or shallow footings, often all three.
Guide price from£480per wall inc VAT
- Postcodes
- M1, M2, M4, M8, M9
- Population
- about 570,000
- Area
- Greater Manchester
- Pricing region
- North West
What is the ground like in Greater Manchester?
We cover Manchester and its postcode districts M1, M2, M4, M8, M9, part of Greater Manchester, with a population of roughly 570,000. We also take enquiries from nearby Salford (2 miles), Middleton (5 miles) and Sale (5 miles).
Parts of Greater Manchester have clay that can shrink near trees in dry spells. Parts of Greater Manchester lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across Greater Manchester: red-brick terraces, mill-town stone terraces, inter-war semis and post-war estates.
Is it time for retaining wall repairs? Common signs
- Horizontal or stepped cracks running along the face of the wall
- Wall leaning forward, or bulging out in the middle of its length
- Water seeping through joints, or white salt staining, after rain
What should you budget for retaining wall repairs in Manchester?
The ranges below reflect typical North West costs for retaining wall repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Minor repairs and drainage | £480 – £1,900 | per wall |
| Structural repair or partial rebuild | £2,900 – £14,400 | per wall |
| New retaining wall | £190 – £430 | per m² of wall face |
Repair options we may recommend
Drainage and minor repairs
Blocked weep holes are cleared or new ones drilled, and where practical a drainage layer is formed behind the wall with an outlet at its base. Loose copings are rebedded, open joints repointed and a few damaged bricks replaced. For a low wall that has not moved much, this can be enough.
Best for: Low walls that are damp or slightly weathered but still upright
Temporary support and reducing load
While a repair is designed and programmed, a dangerous wall may be propped, or soil and loads near the top removed to reduce the push. Moving parked cars or a shed back from the wall is sometimes the simplest first step.
Best for: Walls that are moving now and need making safe
What to expect when we carry out retaining wall repairs
Photos and measurements
Send photos of the whole wall from the front and the end, so any lean shows, plus close-ups of cracks and weep holes. Tell us roughly how tall it is and what sits at the top, such as lawn, patio, drive or a building.
Engineer’s design
Where the wall needs it, an independent chartered structural engineer is appointed to design the repair or new wall, including footing, thickness, reinforcement and drainage. We can arrange this, and the design forms the basis of the quote.
Build and drain
The failing section is taken down, the soil supported in short lengths, and the footing cast. The wall is rebuilt with drainage behind it, backfilled with free-draining material, and building control inspects where the work needs it.
Rules for retaining wall repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Your retaining wall repairs questions
How much will retaining wall repairs cost in Manchester?
Guide prices for retaining wall repairs in Manchester start from about £480 per wall, including VAT, on North West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Manchester?
Yes, Manchester is covered, along with postcode districts M1, M2, M4, M8. We also cover nearby Salford and Middleton.
Is the ground in Greater Manchester prone to subsidence?
Greater Manchester is mostly glacial till over sandstone and mudstone, with the Lancashire coalfield beneath much of Wigan, Bolton, Salford and parts of the east. Historic mine workings, made ground and old mill sites are common. Only an investigation can say why a particular building has moved.
Can a bulging retaining wall be saved?
Sometimes, if the bulge is small, the wall is low and the cause is mainly poor drainage. Improving drainage and repairing the face may stop further movement. A wall that has bulged a lot, cracked through or moved at its base usually needs that section rebuilding on a proper footing.
Do I need an engineer for a retaining wall?
For low walls holding back a planting bed, often not. Walls retaining more than a modest height, often taken as more than about a metre, or supporting a drive, path, building or neighbour’s land, generally need an engineer’s design. An independent chartered structural engineer is appointed where needed, and we can arrange this.
Other structural repairs in Manchester
- Roof structure repairs
- Brick arch repairs
- Subsidence repairs
- Structural surveys and crack monitoring
- Structural crack repairs
Retaining wall repairs near Manchester
If an engineer has already designed a new retaining wall for your Manchester property, send the drawings and we will price building it.