Faster, cleaner subsidence repair with Geobear

When a home is affected by subsidence, the goal is always the same: to stabilise the property by addressing the weak ground beneath the foundations.

For decades, the only answer was traditional underpinning, but modern engineering has provided a faster, cleaner, and far less disruptive alternative: the Geobear geopolymer injection solution.

While both methods aim to solve the problem, how they achieve this is fundamentally different.

Looking into an exposed home foundation where concrete underpinning is being installed.

The old way

Traditional underpinning

Traditional underpinning is a highly disruptive construction method that has been used for over a century. The core principle is to bypass the weak soil directly beneath your home by extending the foundations down to a deeper, more stable soil layer.

This is typically done in one of two ways:

Mass concrete underpinning

This involves manually excavating large pits in sections underneath the existing foundation and filling them with concrete. It is a slow, labour-intensive process that requires removing huge amounts of soil.

Beam and base underpinning

This method uses a strategically placed concrete beam to transfer the building's load onto a series of mass concrete bases, which are located away from the immediate problem area.

Traditional underpinning approaches are major construction projects and take weeks or even months to complete.

Geobear tech drilling on the side of a brick wall an injection point through a home's exterior foundation

A modern, engineered approach

The Geobear solution

Our solution works differently. Instead of bypassing the problem soil, we improve it in-situ. We use a process of geopolymer injection, which is like keyhole surgery for the ground.

Engineered treatment points

We drill a series of small-diameter holes through your foundation deep into the ground to the precise depth required.

Controlled injection

We then inject our specialist geopolymer material at different depths into the weak soil layers.

Rapid expansion

The geopolymer expands with significant force, compacting the surrounding loose soil particles and closing any voids.

Solidification

Within 15 minutes, the material cures to 90% of its full strength, forming a strong, stable, and water-resistant base directly beneath your foundations.

This engineered approach strengthens the existing ground, creating a solid platform for your home without the need for a single skip or excavator.

Underpinning vs. the Geobear solution

Now that we understand the principles behind both methods, let's compare them side-by-side on the factors that matter most to you as a homeowner.

Feature Traditional Underpinning The Geobear Solution (Resin Injection)
Process Major excavation, soil removal, and pouring concrete. Small, targeted injections of our specialist geopolymer resin into the ground.
Disruption Extreme. You will likely need to move out for weeks or months. Minimal. No digging, no mess. You stay in your home while we work.
Time Weeks or months. Typically 1-2 days.
Access Requires large machinery and extensive access around your property. Our equipment is compact and can be brought right to your door in our mobile unit.
Result A large concrete block beneath your foundations. The ground itself is strengthened and improved. It’s a solution for the ground, not just the building.

What about the cost of resin injection underpinning?

 

Every home is unique, so the cost is too. The Geobear cost depends on the extent of the problem, the type of ground, and the size of the area we need to treat.

When comparing the cost of underpinning per metre, it’s crucial to factor in the hidden expenses of traditional methods: the cost of alternative accommodation, the potential for damage to your garden and driveway, and the sheer stress and time involved.

The cost of resin injection underpinning in the UK with Geobear is often more affordable than you think, especially when you consider the value of a fast, clean, and guaranteed solution. We provide a full assessment and a clear, fixed-price quotation so there are no surprises.

One Geobear tech carries steel injection tubes in the foreground and another drills into a home's foundation.

Are there problems with resin underpinning?

This is a question we welcome. As the company that pioneered this technology 40 years ago. When carried out by our highly trained, expert technicians, resin injection is incredibly safe and reliable.

The "problems" you might hear about are often a result of inexperienced companies using inferior materials or incorrect techniques. With Geobear, you get the peace of mind that comes from:

A 10-year, insurance-backed guarantee
The only resin injection company with BBA certification for our materials and systems
A solution proven in over 200,000 projects worldwide

Choose the faster, less disruptive solution

You don't have to face major excavation and months of upheaval. Find out if Geobear is the right choice for your property. Talk to one of our experts today.

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