Ballymena · County Antrim
Extension pulling away repairs in Ballymena
Repairing a separating extension in Ballymena can be as simple as tying the junction or as involved as underpinning. The choice rests on the movement history and the ground, and we confirm a fixed written price once the repair is specified.
Guide price from£530per junction inc VAT

- Postcodes
- BT42, BT43
- Population
- about 29,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
What is the ground like in County Antrim?
Postcode districts BT42, BT43 cover Ballymena, a County Antrim town of about 29,000 people. We also take enquiries from nearby Antrim (10 miles), Magherafelt (15 miles) and Ballymoney (17 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. What you mostly find across County Antrim: red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
What happens when we carry out extension pulling away repairs in Ballymena?
Choose the fix
The engineer decides between ties, a movement joint or underpinning. We confirm a fixed price in writing once the repair is specified, covering the junction, flashings, internal finishes and any foundation work.
Repair the junction
Drains are repaired first if they are leaking. The joint is then tied, formed as a movement joint or rebuilt after underpinning, with roof flashings reset so the junction stays watertight. Building control is handled where needed.
Finish and hand over
Internal corners are replastered, skirtings and coving refixed, and doors or windows in the extension eased where the movement affected them. Records of the repair and any approvals are passed to you.
Signs you may need extension pulling away repairs
- Daylight or draughts showing through the internal corner joint
- Patio doors or windows in the extension starting to bind
- Floor level dropping where the extension and house floors meet
How much will extension pulling away repairs cost in Ballymena?
Prices in Ballymena are worked out on Northern Ireland rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £530 – £1,750 | per junction |
| Movement joint and making goodest. | £350 – £1,050 | per junction |
| Underpinning the extension where needed | £880 – £2,200 | per metre of wall |
Which repair method suits a home in Ballymena?
Underpinning the extension
If the extension is still dropping because its footings are too shallow or on poor ground, they are taken deeper by mass concrete, beam-and-base or mini-piles. The engineer designs the scheme, and the junction is repaired once the new foundation is in.
Best for: Active movement from shallow footings, roots or soft ground
Junction crack repair with stainless ties
The open joint is cut out, stainless ties or helical bars are fixed across it into both the old and new masonry, and the joint is repointed or rendered to match. Inside, the corner is replastered. This suits extensions that moved once and have since stopped.
Best for: Settled extensions with a stable gap at the junction
Rules for extension pulling away repairs in Northern Ireland
In Northern Ireland, the Building Regulations (Northern Ireland) 2012 apply and the council’s building control service approves structural work such as underpinning; minor like-for-like repairs usually need no approval. The Party Wall Act does not apply in Northern Ireland, so work to shared walls depends on deeds and agreement with neighbours.
Extension pulling away repairs in Ballymena: questions and answers
What is the price of extension pulling away repairs in Ballymena?
Guide prices for extension pulling away repairs in Ballymena start from about £530 per junction, 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 carry out extension pulling away repairs in Ballymena?
We do. Ballymena and the surrounding area are covered, including nearby Antrim and Magherafelt. A free initial assessment from your photos is the first step.
Does the ground around Ballymena cause cracking?
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 it normal for an extension to crack at the join?
A fine crack at the junction is fairly common, especially in the first few years as a new extension settles. It becomes a concern when the gap is widening, tapering, letting in water or matched by sticking doors and sloping floors. Those signs point to continuing movement.
Why is my extension pulling away from my house?
Usually because the extension and the house sit on different foundations that react differently to the ground. Shallow extension footings, leaking drains under the extension, nearby roots and weak tie-ins between old and new walls are the common causes.
More repairs we carry out in Ballymena
- Chimney stack repairs
- Lintel replacement
- Subsidence insurance claim repairs
- Resin injection ground stabilisation
- Bowing wall repairs
Extension pulling away repairs near Ballymena
If the junction at your Ballymena property keeps reopening, send dated photos and we will suggest whether monitoring, a drain survey or a repair comes next.