Dunstable · Bedfordshire
Crack stitching in Dunstable
Got a crack you can slip a coin into? In Dunstable, 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£85per metre of crack inc VAT
- Postcodes
- LU6
- Population
- about 52,000
- Area
- Bedfordshire
- Pricing region
- East of England
What should you know about the ground under Dunstable?
Dunstable is in Bedfordshire and takes in postcode districts LU6. About 52,000 people live there. If you are just outside Dunstable, we also cover Luton (5 miles), Leighton Buzzard (6 miles) and Harpenden (9 miles).
Shrinkable clay is widespread in Bedfordshire. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Bedfordshire: Victorian terraces in Bedford and Luton, large inter-war and post-war estates, and newer estates on former clay pits and brickfields.
How we usually approach crack stitching
Helical bars in cementitious grout
The most common approach. A slot is cut along the bed joint with a twin-blade cutter, flushed out and part filled with a cement-based grout. The helical bar is pushed in, more grout is packed over it, and the joint is pointed to match. The grout cures over a few days.
Best for: Most brick and block walls, including older softer bricks
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
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.
Cut, clean and grout
Slots are cut into the bed joints to the right depth, dust is blown and washed out, and grout is placed. The bars are pressed home and covered, and the crack line is filled or injected.
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.
What to look for before calling about crack stitching
- Stepped cracking beside a window, door or corner
- A crack visible on both the inside and outside face of the wall
- Cracking that a surveyor or engineer has said is now stable
Crack stitching prices in Dunstable
These are guide prices for Dunstable, using East of England rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Crack stitching with stainless helical bars | £85 – £190 | per metre of crack |
| Small jobs (minimum visit)est. | £370 – £525 | per visit |
| Repointing over the stitched line in matching mortarest. | £30 – £65 | per metre |
Rules for crack stitching 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 crack stitching in Dunstable
How much should I budget for crack stitching in Dunstable?
Guide prices for crack stitching in Dunstable start from about £85 per metre of crack, including VAT, on East of England 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 Dunstable?
Yes, Dunstable is covered, along with postcode districts LU6. We also cover nearby Luton and Leighton Buzzard.
Why do houses in Bedfordshire crack?
Much of Bedfordshire sits on Oxford Clay and Gault Clay, with chalk rising towards the Chilterns in the south. The clay vales shrink in dry summers and swell in wet winters, which is why seasonal cracking is common around Bedford. Only an investigation can say why a particular building has moved.
How far apart are helical bars placed?
Helical bars are usually placed every few courses up the full height of the crack, each one running well past the crack into sound brickwork. Spacing and bar length depend on the wall and the crack width, and where an engineer has specified the repair, their drawing sets them.
Can crack stitching be done from outside only?
Often yes, especially on cavity walls where only the outer leaf has cracked. On solid walls, or where the crack shows clearly inside, bars may be needed on both faces to reconnect the full thickness. We check both sides before quoting.
Related work in Dunstable
- Concrete repairs
- Chimney stack repairs
- Structural surveys and crack monitoring
- Retaining wall repairs
- Structural crack repairs
Crack stitching near Dunstable
Unsure whether a crack in Dunstable has stopped moving? Pictures with the date on them, taken over a few weeks, help us advise before any bars go in.