Bowing wall repairs in Belfast

Postcodes: BT1, BT2, BT7
Population: about 350,000
Area: County Antrim
Pricing region: Northern Ireland

What is the ground like in County Antrim?

Postcode districts BT1, BT2, BT7 cover Belfast, a County Antrim town of about 350,000 people. Neighbouring towns we 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. Across County Antrim, most homes are red-brick terraces in Belfast, Victorian villas, and post-war and newer estates.

What should you budget for bowing wall 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.

Guide prices inc VAT on Northern Ireland rates. Items marked est. are our estimates.
Item	Guide price	Per
Lateral restraint for a typical gable	£880 – £2,650	per wall
Remedial restraint ties installed	£20 – £55	per tie
Partial rebuild of a badly distorted sectionest.	£2,650 – £7,050	per section

Repair options we may recommend

Stitching a delaminating wall

Where the layers of a solid wall have separated, long stainless ties are drilled in from the face and bonded into the inner layer to bind the wall together again. This is often combined with restraint ties, so the wall is both reconnected through its thickness and tied back to the structure.

Best for: Solid walls where the outer layer has pulled away

Lateral restraint straps

Galvanised or stainless straps are fixed across three or more joists or rafters, turned down against the inside face of the wall and fixed into the masonry. They work well at ceiling and roof level, where the fixings stay hidden.

Best for: Gables and walls bowing near ceiling or roof level

What to expect when we carry out bowing wall repairs

Decide restrain or rebuild
If the wall is badly out of plumb, has bricks crushing or follows removed internal walls, we recommend an engineer, and can arrange one. Their view sets whether restraint is enough or a section needs rebuilding.
Fit the ties and straps
Ties are drilled through and fixed, or straps fitted and secured, at the spacing specified. Any rebuild is carried out at this stage, with temporary propping in place until the new brickwork has gained strength.
Close up and make good
Boards are relaid, plaster and outside fixings made good, and cracked joints repointed. You receive a record of the restraint positions, which helps if you sell or if an engineer needs to check the wall again later.

Is it time for bowing wall repairs? Common signs

Window frames pulling away from the brickwork at the sides
Internal plaster cracks where a wall meets the ceiling
Gutters or the roof edge no longer lining up with the wall

Rules for bowing wall 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.

Your bowing wall repairs questions

What is the price of bowing wall repairs in Belfast?

Guide prices for bowing wall repairs in Belfast start from about £880 per wall, 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 bowing wall repairs in Belfast?

We do. Belfast and the surrounding area are covered, including nearby Newtownabbey and Lisburn. A free initial assessment from your photos is the first step.

Does the ground around Belfast 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 a bowing wall dangerous?

A bowing wall is not always dangerous, but it should never be ignored. Many have been slightly out of line for decades. A bow that is growing, crushing bricks or appeared after building work is more serious, and an engineer should look at it promptly. Your engineer will confirm.

How do I know if my wall is bowing?

Hold a long spirit level or a taut string against the wall and look for a gap in the middle. From inside, gaps between floorboards and skirting on an outside wall are a common clue. Photos showing the gap help us judge it before a visit.

More repairs we carry out in Belfast

Bowing wall repairs near Belfast

If a wall in Belfast began bowing after building work next door, dated photos help us suggest who should look at it first.