Monmouth · Gwent
Retaining wall repairs in Monmouth
If a wall in your Monmouth garden is leaning forward or weeping after rain, it is worth acting before winter adds more water to the soil. Clearing drainage can be enough for a low wall, while bigger walls may need rebuilding on new footings.
Guide price from£460per wall inc VAT
- Postcodes
- NP25
- Population
- about 10,000
- Area
- Gwent
- Pricing region
- Wales
Is Gwent prone to ground movement?
With roughly 10,000 people, Monmouth spans postcode districts NP25 in Gwent. Nearby places we cover include Chepstow (12 miles), Abergavenny (13 miles) and Pontypool (16 miles).
Gwent has a mix of ground, with clay in some places and firmer rock in others. Historic coal workings are recorded beneath parts of Gwent, and a coal mining search is worth checking where movement is unexplained. Typical buildings in Gwent: Valley terraces on steep hillsides, Victorian houses in Newport and Abergavenny, and post-war estates.
Which repair method suits a home in Monmouth?
Rebuilding on new footings
Where the whole wall is failing, it is replaced with a new retaining wall on a properly sized footing, with free-draining backfill, a membrane, weep holes and a drain at the base. Reinforced blockwork faced in brick or stone is common, so the wall matches its surroundings.
Best for: Walls failing along their length, or retaining significant height
Structural repair and partial rebuild
A leaning or bulging section is taken down, the soil behind dug out and supported, and the wall rebuilt on a new footing with drainage and, where specified, reinforcement tied into the sound wall either side. The engineer’s design sets footing size and wall thickness.
Best for: A section that has moved while the rest stays sound
What happens when we carry out retaining wall repairs in Monmouth?
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.
Written quote
You receive a no-obligation written quote covering demolition, excavation, temporary support, the footing, the new or repaired wall, drainage and spoil removal. It becomes a fixed price in writing once the repair is specified.
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.
Signs you may need retaining wall repairs
- Wall leaning forward, or bulging out in the middle of its length
- Ground cracking or sinking along the top of the wall
- Horizontal or stepped cracks running along the face of the wall
How much will retaining wall repairs cost in Monmouth?
The ranges below reflect typical Wales 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 | £460 – £1,850 | per wall |
| Structural repair or partial rebuild | £2,750 – £13,800 | per wall |
| New retaining wall | £185 – £415 | per m² of wall face |
Rules for retaining wall repairs in Wales
In Wales, the Welsh version of the Building Regulations applies. Underpinning and other work that alters or strengthens the structure needs building control approval and inspection; like-for-like repairs often do not. The Party Wall etc. Act 1996 applies to work on party walls and excavation close to a neighbour’s foundations.
Retaining wall repairs in Monmouth: questions and answers
How much should I budget for retaining wall repairs in Monmouth?
Guide prices for retaining wall repairs in Monmouth start from about £460 per wall, including VAT, on Wales rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Monmouth?
Yes. We take enquiries from across Monmouth, including NP25, and from nearby places such as Chepstow and Abergavenny. Send photos for a free initial view and we will tell you what happens next.
Why do houses in Gwent crack?
The valleys of Blaenau Gwent, Torfaen and Islwyn lie on the South Wales coalfield with extensive historic workings and spoil tips, while Newport and Monmouthshire have Mercia Mudstone, alluvium and Old Red Sandstone. Only an investigation can say why a particular building has moved.
Is a leaning retaining wall dangerous?
It can be, especially if the lean is getting worse, the wall is tall, or there is a path, drive or building next to it. A wall that has leaned slightly for decades may be stable, but one that has moved recently should be kept clear and assessed soon.
How long does a retaining wall rebuild take?
Drainage and minor repairs usually take a day or two. Rebuilding a garden retaining wall on new footings typically takes one to three weeks, depending on its length, height, access for digging and any wait for the engineer’s design or inspections.
Related work in Monmouth
Retaining wall repairs near Monmouth
Retaining wall leaning in Monmouth? Keep the area below clear, send us photos, and we will tell you whether it needs an engineer’s design.