Knowledge · Injection

In which soils does resin injection work?

Expanding resin works in almost all the soils found under houses in Belgium. But how the resin behaves differs per soil, and sometimes another technique is better. This is how to choose.

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Mobile injection unit with hoses running to the site

Per soil type

Soil	What the resin does	Suitable?
Sand	Fills voids and compacts loosened sand	Yes
Loam	Compacts and fills cracks in the ground	Yes
Clay	Compresses the clay and fills shrinkage cracks	Yes, especially after drought
Fill, rubble	Fills voids between the material	Yes, after checking the make-up
Peat	Peat stays compressible	Limited; in thick peat we choose push piers

Depth matters

With Deep Lift we inject down to about 3.5 m below the foundation. If the weak layer is deeper, or the house rests on a thick soft layer, Magnum Push Piers carry the load down to bearing ground.

How do we know?

Soil maps and cone penetration tests from nearby
The crack pattern and level differences on the house
Crack gauges to see whether it is still moving
The depth and type of the existing foundation

With serious damage, have a structural engineer assess the situation. Soiltek is a specialist contractor: we record, measure, propose a technique and carry out the repair, in consultation with your engineer.

What can we do?

Magnum Push Piers

Steel push piers down to deep bearing ground, each tested.

Deep Lift

Expanding resin strengthens the ground under the foundation, without digging.

Slab Lift

Sunken concrete floors back to level.

Subsidence survey

First the cause, then the right technique.

Frequently asked questions

Does it work for drought cracks?

Yes. In clay the resin fills the shrinkage cracks and compresses the ground under the foundation.

Why not always inject?

In thick peat or with a weak layer deeper than about 3.5 m, resin does not carry the load to firm ground. Then we choose push piers.

What about groundwater?

Yes. The resin also cures in damp ground and is permitted in water catchment areas.

Not sure?

Send us a few photos of the cracks and the surroundings of your house. We will look, with no obligation, at what may be going on.

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