Lisburn · County Antrim
Wall tie replacement in Lisburn
Horizontal cracking on a Lisburn house is easy to mistake for subsidence. Rusting wall ties leave a much more regular pattern, though, and telling the two apart early saves time, money and an unnecessary insurance claim.
Guide price from£1,600per house inc VAT
- Postcodes
- BT17, BT27, BT28
- Population
- about 78,000
- Area
- County Antrim
- Pricing region
- Northern Ireland
Is County Antrim prone to ground movement?
Lisburn, County Antrim: about 78,000 residents across postcode districts BT17, BT27, BT28. Nearby, we also cover Belfast (7 miles), Newtownabbey (11 miles) and Craigavon (15 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.
How we usually approach wall tie replacement
Remedial tie installation
New stainless ties are drilled through the outer leaf into the inner leaf, then fixed by mechanical expansion or resin, depending on the masonry. They are placed to a set grid across each elevation, with extra ties around openings and at the edges. Holes are made good in matching mortar.
Best for: Walls where the original ties have failed or are missing
Removing old ties and rebedding
On badly cracked elevations the old ties are cut out from the outer face, the joints raked and rebedded, and the brickwork repointed. It is more work than isolation but removes the source of expansion entirely. An engineer or the survey report usually specifies where this is needed.
Best for: Elevations with severe cracking or lifting
What happens during wall tie replacement, step by step?
Report and quote
You receive a written summary of what the survey found on each elevation, which walls need new ties, whether old ties should be isolated or removed, and a no-obligation written quote with scaffold shown separately.
Install the new ties
New stainless ties are drilled and fixed to the specified grid, with closer spacing around windows, doors and the roofline. Sample ties can be pull-tested to confirm they are holding in your particular brick and block.
Deal with the old ties and make good
Old ties are isolated or removed where the report calls for it, cracked joints are raked out and repointed, and drilled holes are filled in matching mortar. A written note of tie positions and findings goes in your property file.
What to look for before calling about wall tie replacement
- The roof edge or verge lifting slightly above the brickwork
- A house built before the 1980s on an exposed or coastal site
- Mortar joints that look wider or opened up on one elevation
Wall tie replacement prices in Lisburn
The ranges below reflect typical Northern Ireland costs for wall tie replacement, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Mid-terrace houseest. | £1,600 – £3,100 | per house |
| Semi-detached house | £2,200 – £4,400 | per house |
| Detached houseest. | £3,100 – £6,150 | per house |
| Scaffolding where neededest. | £530 – £1,600 | per elevation |
Rules for wall tie replacement 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.
Questions about wall tie replacement in Lisburn
How much will wall tie replacement cost in Lisburn?
Guide prices for wall tie replacement in Lisburn start from about £1,600 per house, 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 Lisburn?
Yes. We take enquiries from across Lisburn, including BT17, BT27, BT28, and from nearby places such as Belfast and Newtownabbey. Send photos for a free initial view and we will tell you what happens next.
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.
Will a mortgage lender accept wall tie replacement?
Lenders generally accept properly carried out tie replacement, but they may want to see the survey, the quote or a record of the completed work. If a valuation has flagged wall ties, a written report and itemised quote are usually what the lender or buyer needs next.
Which houses are most at risk of wall tie failure?
Cavity-walled houses built before the 1980s are most at risk, especially those with mild steel ties, black ash mortar or an exposed position. Coastal and hilltop houses, and elevations facing the prevailing weather, tend to fail first.
Other structural repairs in Lisburn
- Retaining wall repairs
- Resin injection ground stabilisation
- Subsidence repairs
- Bay window subsidence repairs
- Floor joist repairs
Wall tie replacement near Lisburn
If your Lisburn home has a bulging outer wall, send photos from a few angles and we will help you decide what needs checking first.