Belfast · County Antrim
Concrete repairs in Belfast
If rust stains or loose concrete have appeared on your Belfast property, it is worth acting before pieces fall. Patch repair, crack injection and a protective coating usually restore balconies, canopies and lintels without replacing them.
Guide price from£75per m² inc VAT
- Postcodes
- BT1, BT2, BT7
- Population
- about 350,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
How do local ground conditions affect concrete repairs in Belfast?
With roughly 350,000 people, Belfast spans postcode districts BT1, BT2, BT7 in County Antrim. Nearby, we also cover Newtownabbey (4 miles), Lisburn (7 miles) and Carrickfergus (10 miles).
Shrinkable clay is less common in County Antrim than in south-east England. Historic brine and salt working has caused ground movement in parts of County Antrim in the past. Typical buildings in County Antrim: Red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
What to expect when we carry out concrete repairs
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.
Written quote
You receive a no-obligation written quote setting out the estimated area of patching, the length of crack injection, coatings and access. It becomes a fixed price in writing once the repair is specified, with any re-measure terms stated clearly.
Is it time for concrete repairs? Common signs
- Exposed steel bars showing where concrete has fallen away
- Fine cracks running in straight lines along the line of the reinforcement
- Damp patches, white deposits or drips on a balcony or canopy underside
What should you budget for concrete repairs in Belfast?
For Belfast we use Northern Ireland 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 |
|---|---|---|
| Concrete patch repair | £75 – £160 | per m² |
| Crack injection | £160 – £420 | per metre |
| Small jobs (minimum visit)est. | £395 – £790 | per visit |
Repair options we may recommend
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
Rules for concrete repairs in Northern Ireland
In Northern Ireland, minor repairs usually need no approval, but structural work comes under the Building Regulations (Northern Ireland) 2012 and council building control. There is no Party Wall Act in Northern Ireland.
Your concrete repairs questions
How much should I budget for concrete repairs in Belfast?
Guide prices for concrete repairs in Belfast start from about £75 per m², including VAT, on Northern Ireland 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 Belfast?
Yes. We take enquiries from across Belfast, including BT1, BT2, BT7, and from nearby places such as Newtownabbey and Lisburn. Send photos for a free initial view and we will tell you what happens next.
Why do houses in County Antrim crack?
County Antrim is largely basalt over chalk, with soft estuarine 'sleech' along Belfast Lough that is notorious for settlement. Historic salt mining is recorded near Carrickfergus. Only an investigation can say why a particular building has moved.
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.
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.
Related work in Belfast
- Bowing wall repairs
- Subsidence repairs
- Subsidence insurance claim repairs
- Brick arch repairs
- Structural crack repairs
Concrete repairs near Belfast
Send close-up and wide photos of the damaged concrete at your Belfast property for a free initial assessment and a no-obligation written quote.