Northern Ireland
Structural repairs in County Antrim
Structural repairs across County Antrim: subsidence, cracks, underpinning, wall ties, lintels and claim repairs. Most of County Antrim is on firmer ground than the clay belts of the south-east.
- Nation
- Northern Ireland
- Pricing region
- Northern Ireland
- Towns listed
- 8
- Mining legacy
- Brine and salt
What is the ground like in County Antrim?
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.
Historic brine and salt working has caused ground movement in parts of County Antrim in the past.
What usually causes cracking in County Antrim?
In County Antrim, cracking usually comes back to one of these. We rule each in or out before recommending a repair.
- Loose or saturated ground where water has collected around foundations
- Old salt and brine workings in parts of the area
- Rusting cavity wall ties in 20th-century brick houses
- Extensions settling on shallower foundations than the house
- Extensions and bays moving differently from the main house
What kind of buildings are common here?
Red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
Which repairs do we carry out in County Antrim?
- Underpinning
- Bay window subsidence repairs
- Boundary and garden wall repairs
- Subsidence insurance claim repairs
- Structural crack repairs
- Wall tie replacement
- Subsidence repairs
- Floor joist repairs
- Extension pulling away repairs
- Chimney stack repairs
- Bowing wall repairs
- Structural surveys and crack monitoring
- Retaining wall repairs
- Lintel replacement
- Gable end wall repairs
- Brick arch repairs
- Roof structure repairs
- Resin injection ground stabilisation
- Concrete repairs
- Crack stitching
Guide prices in County Antrim
A selection of guide prices on Northern Ireland rates, including VAT. Each repair page has the full table.
| Item | Guide price | Per |
|---|---|---|
| Wall tie replacement: semi-detached house | £2,200 – £4,400 | per house |
| Lintel replacement: standard window or door opening | £660 – £2,200 | per opening |
| Bowing wall repairs: lateral restraint for a typical gable | £880 – £2,650 | per wall |
| Structural surveys and crack monitoring: structural engineer's inspection and report | £440 – £1,750 | per property |
Towns we cover in County Antrim
We list 8 towns in County Antrim, covering 15 postcode districts in the BT postcode area. The largest are Belfast (about 350,000 people), Lisburn (about 78,000 people) and Newtownabbey (about 64,000 people). Each town page has local postcodes, nearby places and the repairs we carry out there.
Do repairs in County Antrim need approval?
Most crack repairs in Northern Ireland need no approval; foundation work does. We confirm which applies before a price is agreed.
Questions about structural repairs in County Antrim
Do you cover the whole of County Antrim?
Yes. We take enquiries from across County Antrim, including Belfast, Lisburn, Newtownabbey and Carrickfergus. A free initial assessment from your photos is the first step.
Is County Antrim affected by subsidence?
Most of County Antrim is on firmer ground than the clay belts of the south-east. Historic brine and salt working has caused ground movement in parts of County Antrim in the past. Whether a particular building has moved, and why, needs an investigation on site.
How much do structural repairs cost in County Antrim?
It depends on the repair. On Northern Ireland rates, a standard window or door lintel from about £660 per opening and wall tie replacement on a semi-detached house from about £2,200 per house, including VAT. Your written price follows photos or a survey.
What should I send for a free assessment in County Antrim?
Photos of each crack inside and out with a coin or tape for scale, a wider shot showing where it is on the building, your postcode in County Antrim, and when you first noticed it. If an insurer is involved, include the claim reference.