Mainmark provides bespoke solutions for slab lifting, slab jacking and re-levelling addressing the underlying problem of subsidence by strengthening the ground beneath. Our level correction methods can cater to any building size, from homes and driveways to warehouses and transport yards, and are non-invasive, cost-effective, time-efficient, with minimal disruption to the occupants.

Sunken or unlevel slabs and hardstand surfaces in warehouses or logistics environments can be a sign of foundation ground subsidence. Importantly, they can be a trip hazard, particularly if they cause water to pool in certain areas, further increasing the risk of slips and falls for your employees.

If the area is a hardstand for plant and equipment, uneven floors can result in machinery becoming unlevel or misaligned. This can create significant issues around machine maintenance and performance; some sensitive machines can start producing faulty outputs and it could even void the machine’s warranty.

These unlevel surfaces usually indicate soil subsidence underneath, which can deteriorate further and cause expensive, hard-to-fix damage to buildings and other structures. Even an unlevel driveway at a commercial premises or home, left untreated for too long, can become fragmented and unsalvageable.

It’s essential to fix these problems as soon as possible to prevent further damage and potential hazards.

What causes slabs to sink?

Overtime, as the ground beneath slabs compresses or expends due to changes in ground moisture levels, the weighted concrete slab above will start to subside at different points. There are many different causes of sinking slabs, including extreme weather conditions that cause reactive clay soil to contract or expand, high trafficked areas where excess weight and movement loosens sandy or fine particle soil beneath, ponding slab where excess water was used to cure concrete in small areas, nearby excavations that cause the ground to vibrate, poorly compacted soil during the construction of the building and incomplete or inadequate foundations or footings.

Common indicators of an unlevel slab are misaligned joints between slab panels and soil being pushed out as weight crosses across the slab. If left untreated the lack of support under the panel can cause slab cracking and uneven surfaces.

How Mainmark can help

The best way to fix sinking concrete floors or slabs is to raise and re-level the foundations to re-support the building or structure. Mainmark specialises in lifting, jacking and re-levelling concrete slabs using non-invasive techniques that are cost-effective and time-efficient, giving sunken driveways, concrete slab flooring, hardstand areas and yard pavements a new lease of life.

Using our proprietary products we can achieve both ground improvement and re-levelling, lifting concrete slabs back to level in most cases within a day.

We use non-invasive techniques, likened to keyhole-surgery, so we don’t tear up floors and excavate ground (injection holes can be as small as 6mm).

We are very quick, completing small and large scale projects in a fraction of the time traditional methods would take.

We don’t cause disruption, so there is little, if any, downtime – in many cases, businesses can continue to operate throughout the process.

We strengthen the future of a structure, strengthening weak ground so buildings generally become level, crack-free, and more stable.

We don’t make mess because there is generally no dust, water, or anything else to clean up.

We don’t cause further damage, we fix existing damage. Wall cracks generally close up, doors and windows can usually operate properly again, and trip hazards are eliminated.