Carrickfergus · County Antrim
Extension pulling away repairs in Carrickfergus
An extension pulling away from a Carrickfergus house is often a drain problem, a shallow footing or a missing tie-in, rather than a failing building. Finding out which applies decides whether the fix is a junction repair or new foundations.
Guide price from£530per junction inc VAT
- Postcodes
- BT38
- Population
- about 29,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
Why does the ground in County Antrim matter for extension pulling away repairs?
Carrickfergus, County Antrim: about 29,000 residents across postcode districts BT38. We also take enquiries from nearby Newtownabbey (6 miles), Larne (9 miles) and Belfast (10 miles).
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. What you mostly find across County Antrim: red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.
Guide prices for extension pulling away repairs in Carrickfergus
Prices in Carrickfergus 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 |
Methods for extension pulling away repairs
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
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
From first photo to finished repair
Find what is moving
An independent chartered structural engineer can inspect, and we can arrange one. A drain survey under the extension, a trial pit at its footing and tell-tale monitoring across the joint are common checks before choosing the repair.
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.
Symptoms that point to extension pulling away repairs
- Extension roof flashing lifting off the original wall
- A vertical crack or gap where the extension meets the house
- Mastic or render at the joint repeatedly splitting open
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.
Frequently asked questions
What is the price of extension pulling away repairs in Carrickfergus?
Guide prices for extension pulling away repairs in Carrickfergus 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 Carrickfergus?
Yes, Carrickfergus is covered, along with postcode districts BT38. We also cover nearby Newtownabbey and Larne.
Does the ground around Carrickfergus 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.
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.
Who is responsible if a recent extension is moving?
If the extension is recent, the original builder, the designer or building control records may be relevant, and you may have rights against the builder. Gather the plans, completion certificate and contract. Insurance often excludes defects in new construction, so check your policy.
More repairs we carry out in Carrickfergus
- Concrete repairs
- Bowing wall repairs
- Underpinning
- Retaining wall repairs
- Structural surveys and crack monitoring
Extension pulling away repairs near Carrickfergus
Send photos of the extension junction at your Carrickfergus home, inside and out, and we will give a free initial assessment and a guide price.