Ballymoney · County Antrim
Brick arch repairs in Ballymoney
If you live in a period home in Ballymoney, the arches over your windows were probably laid in lime mortar. Rebuilding them in lime, with the original bricks cleaned and reused, keeps the wall breathing and the repair hard to spot.
Guide price from£350per arch inc VAT

- Postcodes
- BT53
- Population
- about 10,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
Why does the ground in County Antrim matter for brick arch repairs?
Ballymoney, County Antrim: about 10,000 residents across postcode districts BT53. If you are just outside Ballymoney, we also cover Coleraine (7 miles), Ballymena (17 miles) and Limavady (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.
Guide prices for brick arch repairs in Ballymoney
The ranges below reflect typical Northern Ireland costs for brick arch repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Stitching and reinforcing a sound archest. | £350 – £1,050 | per arch |
| Rebuilding an arch (one side) | £790 – £1,150 | per opening |
| Rebuilding an arch (both sides) | £1,600 – £2,300 | per opening |
Methods for brick arch repairs
Lime mortar repairs
On older houses built in soft brick and lime, the arch is rebuilt or repointed in a lime mortar matched to the original. Lime lets moisture escape and moves slightly with the wall, so it protects the bricks rather than forcing damage into them, as hard cement mortar can.
Best for: Pre-1919 houses and soft historic brick
Rebuilding both faces
Where the arch shows inside as well as outside, or a rotten timber behind it has also failed, both faces are rebuilt. The inner timber is replaced with a suitable lintel, and the outer arch is reformed in front. The two are worked in sequence so the wall is supported throughout.
Best for: Arches with a failed timber or inner face
From first photo to finished repair
Look at the arch closely
Straight-on photos of the arch and the wall either side show us how far it has dropped, whether the bricks are sound and whether the cause seems to be the arch itself or the wall around it.
Choose reinforce or rebuild
We recommend reinforcement where the arch is sound and only slightly displaced, and a rebuild where it has dropped badly or bricks are loose. If the wall beside the opening is moving, that is dealt with first.
Repair the arch
Bars are bonded into the joints above a sound arch, or the arch is taken down and relaid over the former using the original bricks where possible, with matched replacements for any that are damaged.
Symptoms that point to brick arch repairs
- A flat arch that has started to sag into a shallow curve
- Gaps opening between arch bricks at the top or bottom edge
- Mortar falling out of the arch joints after frosty weather
Rules for brick arch 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 brick arch repairs cost in Ballymoney?
Guide prices for brick arch repairs in Ballymoney start from about £350 per arch, 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 Ballymoney?
We do. Ballymoney and the surrounding area are covered, including nearby Coleraine and Ballymena. 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.
Why has the middle of my brick arch dropped?
The centre of an arch usually drops because the bricks have lost their wedge, either because the wall at the sides has moved or the mortar has worn away. A rotting timber hidden behind the arch is another common cause. The keystone slipping is the visible result.
Should a brick arch be repaired with lime mortar?
On older houses built with soft bricks and lime, yes, in most cases. Lime mortar lets the wall breathe and is weaker than the brick, so any movement or frost damage happens in the joints rather than the bricks. Modern hard brickwork can take a cement-based mortar.
Other structural repairs in Ballymoney
- Chimney stack repairs
- Gable end wall repairs
- Subsidence repairs
- Crack stitching
- Subsidence insurance claim repairs
Brick arch repairs near Ballymoney
Request a written, no-obligation price for arch repairs in Ballymoney; every arch is itemised, along with any work needed on the inside face.