Farnham · Surrey
Resin injection ground stabilisation in Farnham
Homeowners in Farnham often hear of resin injection as a quicker alternative to underpinning. It can be, provided the problem lies in the upper layers of soil and the drains have been checked, because resin stabilises ground but cannot stop an active leak.
Guide price from£895per metre of wall treated inc VAT
- Postcodes
- GU9, GU10
- Population
- about 37,000
- Area
- Surrey
- Pricing region
- South East
How do local ground conditions affect resin injection ground stabilisation in Farnham?
Farnham, Surrey: about 37,000 residents across postcode districts GU9, GU10. Nearby places we cover include Aldershot (3 miles), Fleet (5 miles) and Farnborough (6 miles).
Shrinkable clay is widespread in Surrey. Ground movement here is more often linked to soils, drains and trees than to mining. Across Surrey, most homes are Victorian and Edwardian villas, 1930s semis and detached houses in the commuter towns, and post-war estates.
Resin injection ground stabilisation prices in Farnham
These are guide prices for Farnham, 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 |
|---|---|---|
| Resin injection ground stabilisation | £895 – £1,700 | per metre of wall treated |
| Typical domestic project | £5,600 – £16,800 | per project |
| Level monitoring after treatmentest. | £390 – £1,000 | per programme |
How we usually approach resin injection ground stabilisation
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
Slab void filling and lifting
Small holes are drilled through the floor, and resin is fed into the void between the slab and the fill. As it expands it fills the gap and can lift the slab by small, controlled amounts. Floor coverings are lifted locally and the holes filled afterwards.
Best for: Sunken concrete ground floors and garage slabs
What happens during resin injection ground stabilisation, step by step?
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.
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.
Level monitoring
Readings after treatment show whether the ground is holding. Once they are steady, cracks are stitched and redecoration can follow. If a section keeps moving, the engineer decides whether further injection or a different method is needed.
What to look for before calling about resin injection ground stabilisation
- Cracks over a section of wall built on loose fill
- Settlement after a drain leak has been found and repaired
- Gaps opening beneath a ground-floor slab or path
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.
Questions about resin injection ground stabilisation in Farnham
How much will resin injection ground stabilisation cost in Farnham?
Guide prices for resin injection ground stabilisation in Farnham start from about £895 per metre of wall treated, 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.
Do you cover Farnham?
Yes. We take enquiries from across Farnham, including GU9, GU10, and from nearby places such as Aldershot and Fleet. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Surrey prone to subsidence?
North Surrey sits on London Clay, the south on Weald Clay, with chalk along the North Downs and sands in the west. Large gardens with mature trees on clay make seasonal subsidence a familiar problem. Only an investigation can say why a particular building has moved.
Is the resin harmful to the ground or drains?
Once cured, the resin is inert in the ground. The practical risk is resin travelling into a damaged drain or service duct, which is why a CCTV drain survey comes first and any defects are repaired before injection. Services near the treated zone are located and protected.
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.
Other structural repairs in Farnham
- Structural surveys and crack monitoring
- Structural crack repairs
- Brick arch repairs
- Bowing wall repairs
- Extension pulling away repairs
Resin injection ground stabilisation near Farnham
Call or send photos of the sunken floor or settled wall at your Farnham property, and we will say whether resin, underpinning or another repair looks likely.