Mountain Ash · Mid Glamorgan
Retaining wall repairs in Mountain Ash
A garden retaining wall in Mountain Ash 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£460per wall inc VAT
- Postcodes
- CF45
- Population
- about 11,000
- Area
- Mid Glamorgan
- Pricing region
- Wales
What is the ground like in Mid Glamorgan?
Mountain Ash is in Mid Glamorgan and takes in postcode districts CF45. About 11,000 people live there. If you are just outside Mountain Ash, we also cover Rhondda (3 miles), Aberdare (4 miles) and Merthyr Tydfil (4 miles).
Clay soils are found in parts of Mid Glamorgan. Historic coal workings are recorded beneath parts of Mid Glamorgan, and a coal mining search is worth checking where movement is unexplained. What you mostly find across Mid Glamorgan: long stone and brick terraces on valley sides, Victorian houses in Bridgend and post-war estates.
Signs you may need retaining wall repairs
- Horizontal or stepped cracks running along the face of the wall
- No weep holes, or weep holes that never seem to drain
- Wall leaning forward, or bulging out in the middle of its length
How much will retaining wall repairs cost in Mountain Ash?
For Mountain Ash we use Wales rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| 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 |
Which repair method suits a home in Mountain Ash?
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
What happens when we carry out retaining wall repairs in Mountain Ash?
Site assessment
On site we measure height and lean, check the drainage and the ground at the top and bottom, and look at access for digging out. Walls that support a drive, path or building, or retain more than a modest height, are referred to an engineer.
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.
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 Mountain Ash: questions and answers
How much will retaining wall repairs cost in Mountain Ash?
Guide prices for retaining wall repairs in Mountain Ash 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.
Do you cover Mountain Ash?
We do. Mountain Ash and the surrounding area are covered, including nearby Rhondda and Aberdare. A free initial assessment from your photos is the first step.
Is the ground in Mid Glamorgan prone to subsidence?
Mid Glamorgan lies on the South Wales coalfield, with dense historic workings, spoil tips and steep valley sides. Landslip, retaining walls and mining legacy are all live issues in the valleys. Only an investigation can say why a particular building has moved.
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.
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 Mountain Ash
- Gable end wall repairs
- Lintel replacement
- Wall tie replacement
- Subsidence insurance claim repairs
- Subsidence repairs
Retaining wall repairs near Mountain Ash
For a guide price on retaining wall repairs in Mountain Ash, use the quote tool or send photos with the wall’s rough height and what sits behind it.