Blackburn · Lancashire
Wall tie replacement in Blackburn
Horizontal cracking on a Blackburn 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£1,750per house inc VAT
- Postcodes
- BB1, BB2
- Population
- about 150,000
- Area
- Lancashire
- Pricing region
- North West
How do local ground conditions affect wall tie replacement in Blackburn?
Blackburn is in Lancashire and takes in postcode districts BB1, BB2. About 150,000 people live there. Nearby, we also cover Darwen (4 miles), Accrington (5 miles) and Chorley (9 miles).
Lancashire has a mix of ground, with clay in some places and firmer rock in others. Parts of Lancashire lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Lancashire, most homes are stone and brick mill terraces, seaside villas in Blackpool and Lytham, and inter-war and post-war semis.
What happens during wall tie replacement, step by step?
Tie survey
A metal detector locates the existing ties and shows their pattern. Small holes are then drilled at sample points and a borescope passed into the cavity to see the tie condition, type and embedment. The holes are made good afterwards.
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.
What to look for before calling about wall tie replacement
- The roof edge or verge lifting slightly above the brickwork
- Outer brickwork bowing or bulging, often worst near the top
- Mortar joints that look wider or opened up on one elevation
Wall tie replacement prices in Blackburn
The ranges below reflect typical North West 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. | £1,750 – £3,350 | per house |
| Semi-detached house | £2,400 – £4,800 | per house |
| Detached houseest. | £3,350 – £6,700 | per house |
| Scaffolding where neededest. | £575 – £1,750 | per elevation |
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
Isolating the old ties
Where the old ties are swelling and cracking the brickwork, fitting new ties alone may not stop further damage. Each old tie can be isolated, usually by cutting it through within the cavity or sleeving its outer end, so it can no longer lift the outer leaf as it continues to corrode.
Best for: Thick mild steel ties still causing horizontal cracking
Rules for wall tie replacement in England
Like-for-like repairs such as crack stitching and repointing do not usually need building control approval in England, but anything that changes or strengthens the structure, such as underpinning or rebuilding a wall, does. If the work touches a party wall, the Party Wall etc. Act 1996 may apply.
Questions about wall tie replacement in Blackburn
How much will wall tie replacement cost in Blackburn?
Guide prices for wall tie replacement in Blackburn start from about £1,750 per house, including VAT, on North West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Blackburn?
We do. Blackburn and the surrounding area are covered, including nearby Darwen and Accrington. A free initial assessment from your photos is the first step.
Is the ground in Lancashire prone to subsidence?
Lancashire is mostly glacial till over sandstone and mudstone, with the Burnley and Accrington coalfield in the east and soft coastal and estuarine ground on the Fylde. Old mill and mine sites leave made ground in many towns. Only an investigation can say why a particular building has moved.
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.
Can wall ties be replaced on a rendered house?
Yes, new ties can be fitted through render, with each drill hole made good afterwards. The repairs can show on painted render, so redecoration of the affected elevation is often worth including. Render can also hide the cracking pattern, so a survey matters more.
Other structural repairs in Blackburn
- Crack stitching
- Gable end wall repairs
- Boundary and garden wall repairs
- Extension pulling away repairs
- Bowing wall repairs
Wall tie replacement near Blackburn
Pick your house type in our quote tool for a Blackburn wall tie guide price, then book a survey to confirm what condition the ties are in.