Cwmbran · Gwent
Retaining wall repairs in Cwmbran
Whether it is a terraced lawn, a sunken patio or a drive cut into a bank, a failing retaining wall in Cwmbran needs drainage, a proper footing and enough strength for its height. We price the repair once the wall and its load are understood.
Guide price from£460per wall inc VAT
- Postcodes
- NP44
- Population
- about 49,000
- Area
- Gwent
- Pricing region
- Wales
Is Gwent prone to ground movement?
Postcode districts NP44 cover Cwmbran, a Gwent town of about 49,000 people. Nearby, we also cover Pontypool (3 miles), Risca (5 miles) and Newport (5 miles).
Clay soils are found in parts of Gwent. Historic coal workings are recorded beneath parts of Gwent, and a coal mining search is worth checking where movement is unexplained. What you mostly find across Gwent: valley terraces on steep hillsides, Victorian houses in Newport and Abergavenny, and post-war estates.
Methods for retaining wall repairs
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
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
From first photo to finished repair
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.
Symptoms that point to retaining wall repairs
- Horizontal or stepped cracks running along the face of the wall
- Bricks or blocks pushed out of line, or coping stones sliding off
- Ground cracking or sinking along the top of the wall
Guide prices for retaining wall repairs in Cwmbran
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.
Frequently asked questions
How much should I budget for retaining wall repairs in Cwmbran?
Guide prices for retaining wall repairs in Cwmbran 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 Cwmbran?
Yes. We take enquiries from across Cwmbran, including NP44, and from nearby places such as Pontypool and Risca. 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.
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.
Who is responsible for a retaining wall between two properties?
Usually the owner of the higher ground, because the wall holds up their land, but it depends on your title deeds and how the wall came to be built. Check the deeds first, take advice if it is unclear, and agree the repair with your neighbour before work starts.
Related work in Cwmbran
- Bay window subsidence repairs
- Roof structure repairs
- Mining subsidence repairs
- Concrete repairs
- Brick arch repairs
Retaining wall repairs near Cwmbran
For a guide price on retaining wall repairs in Cwmbran, use the quote tool or send photos with the wall’s rough height and what sits behind it.