Dyfed · Wales
Concrete repairs in Dyfed
If you live in Dyfed and are looking at concrete repairs, the first question is why the wall moved. Shrinkable clay is less common in Dyfed than in south-east England; parts of Dyfed lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause.
Guide price from£80per m² inc VAT
- Area
- Dyfed
- Pricing region
- Wales
- Ground
- Mostly firmer ground
- Towns listed
- 6
How do local ground conditions affect concrete repairs in Dyfed?
The western edge of the South Wales coalfield lies beneath Llanelli, Ammanford and parts of Pembrokeshire, while the rest of the area is older hard rock with glacial deposits in the valleys.
Parts of Dyfed lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across Dyfed: stone cottages, Victorian terraces in Llanelli and Carmarthen, and post-war estates.
What to look for before calling about concrete repairs
- Rust-coloured stains or streaks running down the concrete surface
- Damp patches, white deposits or drips on a balcony or canopy underside
- Fine cracks running in straight lines along the line of the reinforcement
- Hollow sound when the surface is tapped with a hammer
Concrete repairs prices in Dyfed
The ranges below reflect typical Wales costs for concrete repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Concrete patch repair | £80 – £165 | per m² |
| Crack injection | £165 – £440 | per metre |
| Small jobs (minimum visit)est. | £415 – £830 | per visit |
How we usually approach concrete repairs
Recasting or strengthening
Where steel has lost much of its section, or a lintel or canopy is too far gone to patch, the element is propped and rebuilt, replaced or strengthened to an engineer’s design. It is less common, but sometimes the more lasting option for small canopies and old precast lintels.
Best for: Badly corroded lintels, canopies and balcony edges
Crack injection
Cracks are sealed at the surface, then a low-viscosity resin is injected under pressure through ports until it fills the crack. A rigid resin bonds the two faces back together, while a flexible one seals live cracks against water. The choice depends on whether the crack is still moving.
Best for: Cracks letting water in, or splitting a slab or beam
Protective coatings and sealing
After repair, an anti-carbonation coating, a waterproof deck membrane on a balcony, or a penetrating sealer slows the return of moisture and carbon dioxide. Restoring drips, upstands and falls so water drains away is as important as the coating itself.
Best for: Extending the life of repaired balconies and canopies
What happens during concrete repairs, step by step?
Photos and a description
Send photos of the damage close up and from a distance, plus the whole balcony, canopy or elevation. Tell us roughly how old the building is and whether anything has fallen, so we can judge whether to make it safe first.
Survey and tapping test
On site we tap the surface to find hollow areas, check the steel where it is exposed and note drainage. Where the extent is unclear, a cover meter, carbonation test or chloride test may be advised before repair.
Break out, repair, protect
Damaged concrete is cut back to sound material, steel cleaned and primed, and the section rebuilt and cured. Cracks are injected, then the surface is coated and drainage details put right so water runs off rather than sitting.
Do you need approval for concrete repairs in Wales?
In Wales, small like-for-like repairs do not usually need approval, but work that alters or strengthens the structure needs building control under the Welsh Building Regulations, and the Party Wall etc. Act 1996 can apply to shared walls.
Concrete repairs near you in Dyfed
Questions about concrete repairs in Dyfed
Does the ground around Llanelli cause cracking?
The western edge of the South Wales coalfield lies beneath Llanelli, Ammanford and parts of Pembrokeshire, while the rest of the area is older hard rock with glacial deposits in the valleys. Parts of Dyfed lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Only an investigation on site can say why a particular building has moved.
How much will concrete repairs cost in Dyfed?
On Wales rates, concrete repairs starts from about £80 per m², including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
Can you repair a cracked concrete lintel?
Often, yes. Spalling and small cracks in a concrete lintel can be patch repaired and the steel treated. If the lintel is badly cracked, sagging or the bars have lost much of their section, replacement is usually better, and the opening is propped while it is done.
What is carbonation in concrete?
Carbonation is the gradual reaction between carbon dioxide in the air and concrete, which lowers its alkalinity from the surface inward. Alkaline concrete protects the steel inside, so when carbonation reaches the bars, they can start to rust. A simple test on a freshly broken surface shows how deep it has gone.
Is spalling concrete dangerous?
It can be, mainly because pieces may fall from balconies, canopies and soffits above doors or paths. It also means the steel is losing strength over time. Fence off the area below any loose concrete, keep people off a balcony that is badly affected, and have it assessed soon.