Kempston · Bedfordshire
Wall tie replacement in Kempston
The first clue to failing wall ties in Kempston is usually a crack pattern: fine horizontal lines every few courses on one elevation. We confirm what is happening inside the cavity with a metal detector and borescope before recommending any new ties.
Guide price from£1,900per house inc VAT
- Postcodes
- MK42
- Population
- about 20,000
- Area
- Bedfordshire
- Pricing region
- East of England
How do local ground conditions affect wall tie replacement in Kempston?
Kempston, Bedfordshire: about 20,000 residents across postcode districts MK42. Neighbouring towns we cover: Bedford (2 miles), Newport Pagnell (10 miles) and Biggleswade (10 miles).
Bedfordshire 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. Typical buildings in Bedfordshire: Victorian terraces in Bedford and Luton, large inter-war and post-war estates, and newer estates on former clay pits and brickfields.
Signs you may need wall tie replacement
- Cracked render with a regular horizontal pattern
- Mortar joints that look wider or opened up on one elevation
- The roof edge or verge lifting slightly above the brickwork
How much will wall tie replacement cost in Kempston?
Prices in Kempston are worked out on East of England rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Mid-terrace houseest. | £1,900 – £3,700 | per house |
| Semi-detached house | £2,600 – £5,250 | per house |
| Detached houseest. | £3,700 – £7,350 | per house |
| Scaffolding where neededest. | £630 – £1,900 | per elevation |
Which repair method suits a home in Kempston?
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
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
What happens when we carry out wall tie replacement in Kempston?
Report and quote
You receive a written summary of what the survey found on each elevation, which walls need new ties, whether old ties should be isolated or removed, and a no-obligation written quote with scaffold shown separately.
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.
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.
Wall tie replacement in Kempston: questions and answers
How much will wall tie replacement cost in Kempston?
Guide prices for wall tie replacement in Kempston start from about £1,900 per house, 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.
Do you cover Kempston?
Yes. We take enquiries from across Kempston, including MK42, and from nearby places such as Bedford and Newport Pagnell. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Bedfordshire prone to subsidence?
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.
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.
Which houses are most at risk of wall tie failure?
Cavity-walled houses built before the 1980s are most at risk, especially those with mild steel ties, black ash mortar or an exposed position. Coastal and hilltop houses, and elevations facing the prevailing weather, tend to fail first.
Other structural repairs in Kempston
- Concrete repairs
- Bowing wall repairs
- Boundary and garden wall repairs
- Bay window subsidence repairs
- Extension pulling away repairs
Wall tie replacement near Kempston
Need a report for a buyer or lender in Kempston? Send us the valuation comment and we will explain what a tie survey and quote would cover.