Hillingdon · Greater London
Wall tie replacement in Hillingdon
Horizontal cracking on a Hillingdon 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£2,250per house inc VAT
- Postcodes
- HA4, UB3, UB4, UB7, UB8
- Population
- about 300,000
- Area
- Greater London
- Pricing region
- London
How do local ground conditions affect wall tie replacement in Hillingdon?
We cover the whole of Hillingdon, including postcode districts HA4, UB3, UB4, UB7, UB8; about 300,000 people live in the borough. Nearby places we cover include Ealing (5 miles), Gerrards Cross (6 miles) and Hounslow (6 miles).
Greater London is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
Methods for wall tie replacement
Partial rebuild of the outer leaf
If a section of the outer leaf has bulged too far to be tied back, it is carefully taken down and rebuilt with new ties built in as the work goes up. This is uncommon, and is usually limited to a gable top, a parapet or a panel under a window.
Best for: Outer leaf too distorted to tie back safely
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
From first photo to finished repair
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.
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.
Symptoms that point to wall tie replacement
- Horizontal cracks along mortar joints, repeating every few brick courses
- Mortar joints that look wider or opened up on one elevation
- The roof edge or verge lifting slightly above the brickwork
Guide prices for wall tie replacement in Hillingdon
These are guide prices for Hillingdon, using London rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Mid-terrace houseest. | £2,250 – £4,400 | per house |
| Semi-detached house | £3,100 – £6,250 | per house |
| Detached houseest. | £4,400 – £8,750 | per house |
| Scaffolding where neededest. | £750 – £2,250 | per elevation |
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.
Frequently asked questions
How much will wall tie replacement cost in Hillingdon?
Guide prices for wall tie replacement in Hillingdon start from about £2,250 per house, including VAT, on London rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Hillingdon?
We do. Hillingdon and the surrounding area are covered, including nearby Ealing and Gerrards Cross. A free initial assessment from your photos is the first step.
Is the ground in Greater London prone to subsidence?
Most of Greater London sits on London Clay, among the most shrinkage-prone ground in the UK, with river gravels along the Thames. Subsidence claims here are among the most frequent in the country, especially after dry summers and near street and garden trees. 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.
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.
Other structural repairs in Hillingdon
- Structural crack repairs
- Bay window subsidence repairs
- Crack stitching
- Extension pulling away repairs
- Bowing wall repairs
Wall tie replacement near Hillingdon
Suspect failed wall ties in Hillingdon? We offer a free initial assessment from your photos or a call, and a fixed price after the tie survey.