Resin injection in Kent
When resin works under your home, and when it cannot
Send a description of what you have noticed. A specialist will read it and tell you whether geopolymer resin suits the ground beneath your home, or if another method is needed. There is no charge for this first look.
Ways a foundation can be stabilised
Resin injection is one option among several. The right choice depends on the soil, the depth of the footing and how far the movement has gone.
Things people ask when told their ground is loose
Being told the earth under your home might be washed out or disturbed is frightening. These are the questions most people think of first. None of them are silly, and asking them early stops small doubts from growing.
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Will pumping resin underneath stop my floor sinking further?
It binds loose particles together so the slab rests on solid material again, provided the void is shallow enough.
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Is my house too heavy for this kind of repair?
Geopolymer resin supports modest loads well, but deep foundations on soft clay usually need traditional underpinning instead.
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Can they do it without digging up my kitchen?
The specialist drills small holes through the existing concrete and injects the resin from above, leaving the room usable.
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What if the ground keeps washing away after they finish?
Resin fills current voids but does not fix broken drains or redirect water, so the cause must be dealt with separately.
Typical costs for ground stabilisation work
Prices vary because every home sits on different soil and has sunk by a different amount. Access around the building, the depth of the void and the number of injection points all change how long a job takes and how much material the specialist uses.
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Single void fill under a floor slab
£1,500 - £3,000
Size of the void and how easily the specialist can reach the spot with drilling equipment.
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Resin injection along one wall footing
£3,000 - £6,500
Length of the affected wall and the depth the resin needs to travel to reach firm ground.
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Lifting a sunken concrete drive section
£2,000 - £4,500
Area of the slab, the degree of settlement and whether drainage repairs are also required.
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Stabilising a bay window base with resin
£2,500 - £5,000
Access around the bay and whether the original footing is shallow enough for resin to reach.
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Full perimeter shallow injection
£8,000 - £15,000
Total length of external walls and the volume of loose material found during trial pits.
These figures indicate what work of this type typically costs across the trade. Nothing here is a quotation. Only a site inspection settles a price for one home.
What you receive after an inspection
A specialist examines the ground and records what they find. You get written evidence of the condition beneath your home and a clear view of what needs doing next.
Ground condition report
Sets out what the trial pits or boreholes revealed about the soil, moisture levels and any voids present beneath the footings.
Cause of movement assessment
Identifies why the ground shifted, separating drain leaks, tree roots and natural shrinkage so the right fix is chosen.
Method statement
Details the exact repair approach, including hole positions, resin volumes and curing times, so you know what the work involves.
Questions about resin injection in Kent
Does the chalk in North Kent make resin injection harder?
Chalk is generally firm, but old dene holes and swallow holes create sudden deep voids. Resin cannot bridge a large collapse in chalk; those situations usually need piling or concrete filling to reach stable strata below.
My home is built on Weald Clay. Will resin hold?
Weald Clay shrinks and swells with the seasons. Resin fills gaps left by shrinkage but does not stop the clay from moving again next summer. A specialist will check whether deeper underpinning is the safer choice.
Can resin fix a crack that runs up two storeys?
A tall diagonal crack often means differential settlement beyond what shallow injection addresses. The specialist will measure the opening over time to decide if resin alone is enough or if the foundations need extending.
How long before I can walk on the floor again?
Geopolymer resin cures quickly. Most specialists allow foot traffic within a few hours, though heavy furniture should wait until the following day to let the material reach full strength.
Will the drill holes be visible once the work is done?
The specialist plugs each hole with a mortar that matches the surrounding concrete. On bare floors you might spot faint circles, but under carpet or tiles they disappear entirely.
Is there a risk the resin goes somewhere it should not?
The specialist monitors pressure constantly during injection. If the material starts flowing toward a drain or boundary, they pause and adjust the mix so it stays under the intended footing.
Tell us what you have noticed
Write down where the cracks are, when you first saw them and anything you know about the ground nearby. A specialist reads your description and replies with an honest view of whether resin injection fits your situation. It commits you to nothing.
- No obligation
- Free initial review
- Honest advice