Larne · County Antrim
Concrete repairs in Larne
Where flats and houses in Larne and across County Antrim have concrete balconies, canopies or lintels several decades old, carbonation has had time to reach the reinforcement. That is when spalling and straight-line cracking tend to appear.
Guide price from£75per m² inc VAT
- Postcodes
- BT40
- Population
- about 18,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
What should you know about the ground under Larne?
Postcode districts BT40 cover Larne, a County Antrim town of about 18,000 people. If you are just outside Larne, we also cover Carrickfergus (9 miles), Newtownabbey (14 miles) and Belfast (18 miles).
Clay shrinkage is less of a concern in County Antrim, so other causes such as drains, poor footings or older walls are checked first. 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.
Guide prices for concrete repairs in Larne
These are guide prices for Larne, using Northern Ireland rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
Methods for concrete repairs
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
From first photo to finished repair
Engineer where needed
If the steel has lost significant section, or the element carries a balcony, stair or wall, an independent chartered structural engineer is appointed to assess and specify. We can arrange this, and the repair follows their scope.
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.
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.
Symptoms that point to 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
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.
Frequently asked questions
How much will concrete repairs cost in Larne?
Guide prices for concrete repairs in Larne 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.
Do you cover Larne?
We do. Larne and the surrounding area are covered, including nearby Carrickfergus and Newtownabbey. A free initial assessment from your photos is the first step.
Is the ground in County Antrim prone to subsidence?
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.
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.
Can a concrete balcony be repaired rather than replaced?
In most cases, yes. Patch repairs, crack injection, a new waterproof deck and restored drips usually extend a balcony’s life considerably. Replacement is generally only needed where the steel has lost a lot of section or the balcony’s fixing to the building is compromised.
Other structural repairs in Larne
- Chimney stack repairs
- Boundary and garden wall repairs
- Wall tie replacement
- Gable end wall repairs
- Brick arch repairs
Concrete repairs near Larne
Concrete falling from a balcony or canopy in Larne? Fence off the area below, send us photos, and we will advise on making it safe and repairing it.