Grantham · Lincolnshire
Extension pulling away repairs in Grantham
An extension pulling away from a Grantham house is often a drain problem, a shallow footing or a missing tie-in, rather than a failing building. Finding out which applies decides whether the fix is a junction repair or new foundations.
Guide price from£590per junction inc VAT
- Postcodes
- NG31
- Population
- about 45,000
- Area
- Lincolnshire
- Pricing region
- East Midlands
What is the ground like in Lincolnshire?
Grantham (NG31) has around 45,000 residents and sits in Lincolnshire. Nearby places we cover include Sleaford (11 miles), Newark-on-Trent (13 miles) and Melton Mowbray (14 miles).
Clay soils are found in parts of Lincolnshire. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in Lincolnshire: Victorian terraces in Lincoln and Grimsby, fenland brick houses, seaside bungalows and post-war estates.
From first photo to finished repair
Choose the fix
The engineer decides between ties, a movement joint or underpinning. We confirm a fixed price in writing once the repair is specified, covering the junction, flashings, internal finishes and any foundation work.
Repair the junction
Drains are repaired first if they are leaking. The joint is then tied, formed as a movement joint or rebuilt after underpinning, with roof flashings reset so the junction stays watertight. Building control is handled where needed.
Finish and hand over
Internal corners are replastered, skirtings and coving refixed, and doors or windows in the extension eased where the movement affected them. Records of the repair and any approvals are passed to you.
Symptoms that point to extension pulling away repairs
- Daylight or draughts showing through the internal corner joint
- Mastic or render at the joint repeatedly splitting open
- A vertical crack or gap where the extension meets the house
Guide prices for extension pulling away repairs in Grantham
The ranges below reflect typical East Midlands costs for extension pulling away repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £590 – £1,950 | per junction |
| Movement joint and making goodest. | £390 – £1,200 | per junction |
| Underpinning the extension where needed | £980 – £2,450 | per metre of wall |
Methods for extension pulling away repairs
Underpinning the extension
If the extension is still dropping because its footings are too shallow or on poor ground, they are taken deeper by mass concrete, beam-and-base or mini-piles. The engineer designs the scheme, and the junction is repaired once the new foundation is in.
Best for: Active movement from shallow footings, roots or soft ground
Junction crack repair with stainless ties
The open joint is cut out, stainless ties or helical bars are fixed across it into both the old and new masonry, and the joint is repointed or rendered to match. Inside, the corner is replastered. This suits extensions that moved once and have since stopped.
Best for: Settled extensions with a stable gap at the junction
Rules for extension pulling away repairs in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Frequently asked questions
What is the price of extension pulling away repairs in Grantham?
Guide prices for extension pulling away repairs in Grantham start from about £590 per junction, including VAT, on East Midlands rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out extension pulling away repairs in Grantham?
Yes. We take enquiries from across Grantham, including NG31, and from nearby places such as Sleaford and Newark-on-Trent. Send photos for a free initial view and we will tell you what happens next.
Does the ground around Grantham cause cracking?
Lincolnshire has Lias, Oxford and Kimmeridge clays on the vales, chalk on the Wolds and soft silts and peat in the fens around Boston and Spalding. Fen ground and clay can both settle or shrink in dry years. Only an investigation can say why a particular building has moved.
Can I just fill the gap with mastic?
Mastic can keep water out short term, but it does not stop movement or reconnect the walls. If the gap reopens after filling, something is still moving. Photograph and measure it over a few months first, so an engineer can see the trend.
Can a drain under my extension cause it to move?
Yes, a cracked or displaced drain beneath or beside an extension can soften clay or wash away fine soil. A CCTV drain survey usually finds it. Repairing the drain is often the first and most important step before any repair to the walls.
More repairs we carry out in Grantham
- Brick arch repairs
- Subsidence insurance claim repairs
- Chimney stack repairs
- Structural crack repairs
- Boundary and garden wall repairs
Extension pulling away repairs near Grantham
Photos of the crack, the internal corner and the roof flashing are a good start; send them about your Grantham home and we will reply with a view.