Grantham · Lincolnshire
Subsidence repairs in Grantham
If doors have started sticking in your Grantham home and new cracks have appeared, it is worth acting before they widen. We can look at photos first and tell you whether an engineer, a drain survey or your insurer should be the next call.
Guide price from£2,450per property inc VAT
- Postcodes
- NG31
- Population
- about 45,000
- Area
- Lincolnshire
- Pricing region
- East Midlands
Is Lincolnshire prone to ground movement?
Grantham (NG31) has around 45,000 residents and sits in Lincolnshire. If you are just outside Grantham, we also cover Sleaford (11 miles), Newark-on-Trent (13 miles) and Melton Mowbray (14 miles).
Parts of Lincolnshire have clay that can shrink near trees in dry spells. 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.
Methods for subsidence repairs
Crack stitching and making good
Once movement has stopped, cracked brickwork is cut along the bed joints, stainless helical bars are bonded in to tie the wall together, and the joints are repointed to match. Inside, plaster is renewed along the crack line before redecoration.
Best for: Category 1 to 3 cracking in walls that are otherwise sound
Foundation strengthening
Where the ground cannot be made stable, the load is carried down to firmer soil by underpinning, a beam-and-base scheme, mini-piles or resin injection, depending on the soil and access. It is designed by an engineer and is the exception, not the rule.
Best for: Ongoing movement where removing the cause has not worked
From first photo to finished repair
Find the cause
An independent chartered structural engineer inspects the house and, where needed, arranges a drain survey, trial pits or soil tests. We can arrange the engineer. The aim is to know what is moving, and why, before money goes on repairs.
Deal with the cause
Drains are repaired, vegetation is managed on the engineer’s advice, or a foundation scheme is designed if nothing else will work. Where monitoring is recommended, readings run for several months to show the movement has stopped.
Repairs and making good
Cracks are stitched and repointed outside, plaster is renewed along the crack lines inside, and sticking doors are eased. Where the work needs it, we deal with building control and hand over the paperwork.
Symptoms that point to subsidence repairs
- A gap opening between the skirting board and the floor
- Diagonal cracks wider at the top, running from window or door corners
- Doors and windows that start to stick or no longer close
Guide prices for subsidence repairs in Grantham
Guide prices below are for homes in Grantham, on East Midlands rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's investigation and report | £490 – £1,950 | per property |
| CCTV drain survey (common first check) | £145 – £345 | per survey |
| Typical repair once the cause is dealt with: crack stitching and making goodest. | £2,450 – £11,800 | per property |
| Foundation strengthening where it is needed (see underpinning) | £980 – £3,450 | per metre of wall |
Rules for subsidence 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
How much will subsidence repairs cost in Grantham?
Guide prices for subsidence repairs in Grantham start from about £2,450 per property, 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 cover Grantham?
We do. Grantham and the surrounding area are covered, including nearby Sleaford and Newark-on-Trent. A free initial assessment from your photos is the first step.
Is the ground in Lincolnshire prone to subsidence?
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.
Should I cut down the tree near my house?
Not without advice, because felling a mature tree on clay can make things worse. As the roots stop drawing water, the clay swells and can lift the foundations, which is called heave. Pruning or staged removal may be advised instead. Check whether the tree is protected.
How long should I wait before repairing subsidence cracks?
Usually until the cause has been dealt with and the engineer is satisfied that movement has stopped. On clay that can mean watching the house through a summer and a winter. Repairing too early risks the same cracks opening again.
Other structural repairs in Grantham
- Gable end wall repairs
- Resin injection ground stabilisation
- Floor joist repairs
- Retaining wall repairs
- Roof structure repairs
Subsidence repairs near Grantham
For a no-obligation written quote on subsidence repairs in Grantham, call us or send a few photos and a short note on when the cracks appeared.