Portsmouth · Hampshire
Wall tie replacement in Portsmouth
If a mortgage valuation on a Portsmouth property has flagged possible wall tie failure, the next step is a tie survey and a written quote. We explain what the borescope found on each elevation and price only the walls that need work.
Guide price from£2,000per house inc VAT
- Postcodes
- PO1, PO2, PO5
- Population
- about 210,000
- Area
- Hampshire
- Pricing region
- South East
What should you know about the ground under Portsmouth?
Portsmouth, Hampshire: about 210,000 residents across postcode districts PO1, PO2, PO5. Neighbouring towns we cover: Fareham (5 miles), Hayling Island (5 miles) and Havant (6 miles).
Much of Hampshire sits on clay that shrinks in dry summers and swells in wet winters. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Hampshire: Victorian terraces in Portsmouth and Southampton, 1930s semis, and large post-war and new-build estates.
Repair options we may recommend
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
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
What to expect when we carry out wall tie replacement
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.
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.
Is it time for wall tie replacement? Common signs
- Mortar joints that look wider or opened up on one elevation
- Outer brickwork bowing or bulging, often worst near the top
- Cracked render with a regular horizontal pattern
What should you budget for wall tie replacement in Portsmouth?
These are guide prices for Portsmouth, using South East 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. | £2,000 – £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 |
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.
Your wall tie replacement questions
How much should I budget for wall tie replacement in Portsmouth?
Guide prices for wall tie replacement in Portsmouth 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 Portsmouth?
Yes, Portsmouth is covered, along with postcode districts PO1, PO2, PO5. We also cover nearby Fareham and Hayling Island.
Why do houses in Hampshire crack?
Central Hampshire is chalk, while the south around Portsmouth, Southampton and the New Forest fringe and the north-east around Farnborough sit on London Clay, Reading Beds and other clays and sands. The clay areas see seasonal movement near trees. Only an investigation can say why a particular building has moved.
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.
Do all walls of the house need new ties?
Not necessarily, because ties often fail on one exposed elevation long before the others. The survey checks each wall, and the quote covers only the elevations where ties have failed or are close to it. Sheltered walls may simply be noted for future checks.
Related work in Portsmouth
- Subsidence repairs
- Underpinning
- Crack stitching
- Structural surveys and crack monitoring
- Gable end wall repairs
Wall tie replacement near Portsmouth
Our no-obligation written quote for wall ties in Portsmouth shows each elevation and the scaffold on its own line, so nothing is bundled together.