Tonbridge · Kent
Wall tie replacement in Tonbridge
For landlords with older housing stock in Tonbridge, wall ties are worth checking before the cracks appear. A short survey on each elevation gives you a clear record and a priced plan if replacement is needed.
Guide price from£2,000per house inc VAT
- Postcodes
- TN9, TN10, TN11
- Population
- about 36,000
- Area
- Kent
- Pricing region
- South East
What should you know about the ground under Tonbridge?
We cover Tonbridge and its postcode districts TN9, TN10, TN11, part of Kent, with a population of roughly 36,000. Neighbouring towns we cover: Tunbridge Wells (4 miles), Sevenoaks (6 miles) and Crowborough (10 miles).
Much of Kent sits on clay that shrinks in dry summers and swells in wet winters. Parts of Kent lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Housing stock in Kent: Victorian terraces in the Medway towns, weatherboarded and Wealden houses, 1930s semis and seaside bungalows.
What to look for before calling about wall tie replacement
- Outer brickwork bowing or bulging, often worst near the top
- Horizontal cracks along mortar joints, repeating every few brick courses
- Cracked render with a regular horizontal pattern
Wall tie replacement prices in Tonbridge
The ranges below reflect typical South East 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. | £2,000 – £3,900 | per house |
| Semi-detached house | £2,800 – £5,600 | per house |
| Detached houseest. | £3,900 – £7,850 | per house |
| Scaffolding where neededest. | £670 – £2,000 | per elevation |
How we usually approach wall tie replacement
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
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
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.
Access
Ties are fitted across the whole of each affected elevation, so scaffold or a tower is usually needed above ground floor. We plan access around conservatories, extensions, neighbours’ land and any parking that must be suspended.
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.
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 Tonbridge
How much should I budget for wall tie replacement in Tonbridge?
Guide prices for wall tie replacement in Tonbridge start from about £2,000 per house, including VAT, on South East 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 Tonbridge?
We do. Tonbridge and the surrounding area are covered, including nearby Tunbridge Wells and Sevenoaks. A free initial assessment from your photos is the first step.
Why do houses in Kent crack?
North Kent sits on London Clay, central Kent on Gault and Weald Clays and the Downs on chalk, so shrinkable clay is widespread. East Kent around Deal and Dover had a small deep coalfield, worked until the late 1980s. Only an investigation can say why a particular building has moved.
Do the old wall ties have to be removed?
Not always, because thin wire ties that cannot swell are usually left in place once new ties are fitted. Thicker ties that are still expanding and cracking the wall are isolated or removed so they stop causing damage. The survey decides which applies.
How do I know if my wall ties have failed?
The clearest sign is horizontal cracking in the mortar joints repeating every few courses, often with a bulge or a lifted roofline. Wire ties can fail with no cracking at all, so a tie survey with a metal detector and borescope is the only reliable check.
Related work in Tonbridge
- Brick arch repairs
- Extension pulling away repairs
- Mining subsidence repairs
- Resin injection ground stabilisation
- Bay window subsidence repairs
Wall tie replacement near Tonbridge
Need a report for a buyer or lender in Tonbridge? Send us the valuation comment and we will explain what a tie survey and quote would cover.