Lewisham · Greater London
Resin injection ground stabilisation in Lewisham
A sunken floor slab or a settled corner in a Lewisham home can sometimes be treated from the surface with expanding resin. Levels are read throughout, and monitoring afterwards shows whether the ground is holding before the cracks are repaired.
Guide price from£1,000per metre of wall treated inc VAT
- Postcodes
- BR3, SE4, SE6, SE12, SE13
- Population
- about 300,000
- Area
- Greater London
- Pricing region
- London
What should you know about the ground under Lewisham?
Lewisham takes in postcode districts including BR3, SE4, SE6, SE12, SE13, with about 300,000 residents. Neighbouring towns we cover: Southwark (3 miles), Greenwich (4 miles) and Lambeth (4 miles).
Much of Greater London 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 Greater London: Victorian and Edwardian terraces with shallow footings, inter-war semis in the outer boroughs, and converted flats and mansion blocks.
From first photo to finished repair
Ground and drain checks
Trial pits or probes confirm the soil profile, and a CCTV drain survey checks for leaks and for pipes in the injection zone. Damaged drains are repaired first, so resin is not lost into them or used to treat a cause that is still active.
Design and written price
The injection depths, spacing and target lift are set out before work starts. We confirm a fixed price in writing for the treated length, the monitoring and the making good, and deal with building control where the work needs it.
Injection day
Holes are drilled, tubes placed and resin injected in stages while laser levels on the wall are watched for any rise. Most domestic jobs are done from outside, with little mess. Holes are filled and joints made good at the end.
Symptoms that point to resin injection ground stabilisation
- Settlement after a drain leak has been found and repaired
- A corner that has dropped but no longer moves with the seasons
- Sinking that trial pits trace to loose or washed-out soil
Guide prices for resin injection ground stabilisation in Lewisham
Guide prices below are for homes in Lewisham, on London rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Resin injection ground stabilisation | £1,000 – £1,900 | per metre of wall treated |
| Typical domestic project | £6,250 – £18,800 | per project |
| Level monitoring after treatmentest. | £440 – £1,100 | per programme |
Methods for resin injection ground stabilisation
Resin alongside other repairs
Injection often forms one part of a wider scheme: drains repaired first, resin under the affected section, then crack stitching and making good once readings settle. On a mixed site, one wall may suit resin while another needs conventional underpinning instead.
Best for: Localised settlement within a broader subsidence repair
Injection beneath strip footings
Holes are drilled at close spacing along the wall, and tubes are placed at one or more depths below the footing. Resin is injected in stages from the bottom up, building a stiffened zone of ground under the wall while levels are read continuously.
Best for: Settled walls on loose or washed-out soil at shallow depth
Rules for resin injection ground stabilisation 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 should I budget for resin injection ground stabilisation in Lewisham?
Guide prices for resin injection ground stabilisation in Lewisham start from about £1,000 per metre of wall treated, including VAT, on London 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 Lewisham?
We do. Lewisham and the surrounding area are covered, including nearby Southwark and Greenwich. A free initial assessment from your photos is the first step.
Why do houses in Greater London crack?
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.
How do I know if my house is suitable?
An engineer decides, based on the soil type, the depth to firm ground and the cause of movement. Send us photos and any reports for a free initial assessment. We will say honestly if resin looks unlikely to suit and a different repair is worth considering.
How long does resin injection last?
The cured resin itself is stable and does not break down in normal ground. Whether the repair lasts depends on whether the cause of movement has been removed, which is why drains are checked and monitoring follows. If the ground was the only problem, the treatment is usually long-term.
Related work in Lewisham
- Extension pulling away repairs
- Wall tie replacement
- Concrete repairs
- Structural crack repairs
- Floor joist repairs
Resin injection ground stabilisation near Lewisham
Call or send photos of the sunken floor or settled wall at your Lewisham property, and we will say whether resin, underpinning or another repair looks likely.