Derry · County Londonderry
Crack stitching in Derry
Got a crack you can slip a coin into? In Derry, as anywhere, that is usually wide enough to justify stitching rather than filling, provided an engineer or surveyor agrees the wall has stopped moving.
Guide price from£70per metre of crack inc VAT
- Postcodes
- BT48
- Population
- about 84,000
- Area
- County Londonderry
- Pricing region
- Northern Ireland
What should you know about the ground under Derry?
Derry (BT48) has around 84,000 residents and sits in County Londonderry. We also take enquiries from nearby Strabane (14 miles) and Limavady (15 miles).
Clay shrinkage is less of a concern in County Londonderry, so other causes such as drains, poor footings or older walls are checked first. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in County Londonderry: Georgian and Victorian houses in Derry, brick terraces and post-war estates.
What happens during crack stitching, step by step?
Confirm the cause has stopped
Before quoting we check what made the wall crack and whether it is still moving. If there is doubt, we suggest a period of monitoring or an engineer’s view, rather than stitching a crack that will simply open again.
Repoint to match
The cut joints and crack are pointed in a mortar chosen to match the colour, texture and strength of the existing work. On older houses with soft bricks, a lime mortar is used so the repair does not trap moisture.
Make good and record
Internal plaster cracks are cut out and filled where included, and dust is cleared. You receive a short note of where the bars went, which is useful for future buyers, surveyors and any insurance file.
What to look for before calling about crack stitching
- Stepped cracking beside a window, door or corner
- Bricks split clean through where the crack crosses them
- Cracking that a surveyor or engineer has said is now stable
Crack stitching prices in Derry
For Derry 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.
| Item | Guide price | Per |
|---|---|---|
| Crack stitching with stainless helical bars | £70 – £160 | per metre of crack |
| Small jobs (minimum visit)est. | £310 – £440 | per visit |
| Repointing over the stitched line in matching mortarest. | £25 – £55 | per metre |
How we usually approach crack stitching
Stitching with crack injection
Once the bars are in, the crack itself is filled. Fine cracks are pointed in matching mortar, while wider or deeper cracks can be injected with grout so the void inside the wall is filled rather than just the face. On older houses, lime mortar keeps the repair breathable.
Best for: Deep cracks running through the full thickness of the wall
Helical bars in resin grout
A resin grout bonds quickly and strongly to the bar and masonry and suits wet conditions or work that must take load sooner. It is less forgiving of soft or crumbly bricks, so the choice of grout is made wall by wall rather than as a rule.
Best for: Dense bricks, damp walls and repairs needing a fast cure
Rules for crack stitching 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 crack stitching in Derry
How much should I budget for crack stitching in Derry?
Guide prices for crack stitching in Derry start from about £70 per metre of crack, 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.
Can you survey a property in Derry?
Yes. We take enquiries from across Derry, including BT48, and from nearby places such as Strabane and Limavady. Send photos for a free initial view and we will tell you what happens next.
Why do houses in County Londonderry crack?
County Londonderry has basalt, older hard rock and glacial deposits, with soft river ground along the Foyle and Bann. Only an investigation can say why a particular building has moved.
How long does crack stitching last?
Stainless steel bars do not rust, so a stitched repair in a stable wall should last as long as the surrounding brickwork. The repair only fails early when the wall keeps moving, which is why the cause is dealt with before the bars go in.
Does crack stitching stop a wall moving?
No, crack stitching reconnects cracked masonry but does not stop the movement that caused it. If the ground is still shrinking, a drain is still leaking or ties are still rusting, a stitched wall can crack again nearby. The cause has to be identified and dealt with first.
Related work in Derry
Crack stitching near Derry
Unsure whether a crack in Derry has stopped moving? Pictures with the date on them, taken over a few weeks, help us advise before any bars go in.