Resin injection ground stabilisation in Surrey

Area: Surrey
Pricing region: South East
Ground: Shrinkable clay widespread
Towns listed: 22

What should you know about the ground under Surrey?

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.

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.

From first photo to finished repair

Is resin suitable?
Send photos and any reports you hold. We give a free initial assessment, and an independent engineer then checks soil type, depth to firm ground and the cause. We can arrange the engineer. Clay and tree problems need particular care.
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.
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.

Symptoms that point to resin injection ground stabilisation

Floor slab dropping or hollow-sounding near one external wall
Settlement after a drain leak has been found and repaired
Sinking that trial pits trace to loose or washed-out soil
A corner that has dropped but no longer moves with the seasons

Guide prices for resin injection ground stabilisation in Surrey

For Surrey we use South East rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.

Guide prices inc VAT on South East rates. Items marked est. are our estimates.
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

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

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

Resin injection: expanding resin injected through tubes beneath the footing. Indicative drawing, not to scale.

Do you need approval 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.

Resin injection ground stabilisation near you in Surrey

Frequently asked questions

Does the ground around Woking cause cracking?

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. Ground movement here is more often linked to soils, drains and trees than to mining. Only an investigation on site can say why a particular building has moved.

How much will resin injection ground stabilisation cost in Surrey?

On South East rates, resin injection ground stabilisation starts from about £895 per metre of wall treated, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.

Can resin injection lift my house back to level?

It can produce small, controlled lifts, but it is not a way to jack a house back to its original position. The main aim is to stabilise the ground. Laser levels are watched throughout so injection stops before the lift strains the walls or opens new cracks.

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.

Does resin injection work on clay soil?

Sometimes, but clay needs the most caution. If seasonal shrinkage from nearby trees is the cause, resin under the footing may not stop the drying below it. An engineer should look at the soil, the trees and the monitoring history before resin is chosen for a clay site.