Traditional support beneath existing foundations
Concrete underpinning
Concrete underpinning strengthens the support beneath an existing building. KiKK Groundworks carries out underpinning to the project’s engineered specification, with the aim of stabilising the structure on suitable supporting ground.
- Mass concrete underpinning
- Structural stabilisation
- Work to an engineered design
What is mass concrete underpinning?
Mass concrete underpinning introduces concrete beneath existing foundations to extend their support to a suitable bearing level. It is a foundation repair technique for existing structures, rather than the installation of ordinary footings for a new extension.
The work is carried out in a planned sequence of sections. The engineer specifies the underpinning arrangement and how the load is transferred. Depth, section sizes and the sequence must be determined for the particular building; there is no standard layout that suits every property.
When is concrete underpinning suitable?
Concrete may be considered where existing foundations need additional support and appropriate bearing ground can be reached with a practical excavation. The building’s loads, neighbouring structures, groundwater, access and buried services all influence whether this method is appropriate.
Where the supporting ground is too deep or excavation is difficult, another engineered solution may be needed. KiKK’s role is to carry out the specified groundworks; the structural design and investigation establish which solution should be built.
Concrete underpinning primarily stabilises a building. It does not automatically reverse settlement, straighten floors or repair existing cracks. Any lifting or repairs to the structure and finishes need to be considered separately in the project scope.
Planning access, excavation and reinstatement
Underpinning needs space for safe access, excavation, spoil removal and concrete delivery. A narrow side passage or an affected internal wall can change how the work is organised. We discuss these practical constraints when reviewing your project.
The quote should explain which areas will be disturbed and what making good is included. Paths, paving, drainage and internal finishes may need attention depending on the work location. Identifying these items early makes it easier to compare quotations and plan around the work.
Concrete underpinning cost factors
The length of foundation affected is only part of the price. Excavation depth, ground conditions, temporary support, concrete requirements, access and reinstatement can change the cost substantially. Investigation and structural design should also be accounted for when budgeting.
Send us any available drawings or engineer’s report with your enquiry. We can discuss the proposed work and the information needed for a meaningful quote, rather than treating a generic price per metre as a fixed offer.
From enquiry to an agreed plan
- 01
Review the design & site
Confirm the engineer’s specification, access, services and the proposed extent of the work.
- 02
Carry out the specified sequence
Excavation and concrete work follow the project’s support and inspection requirements.
- 03
Complete & make good
Complete the agreed records and reinstatement, with any further monitoring defined by the project team.
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Concrete Underpinning FAQs
Does concrete underpinning lift a house?
Its primary purpose is to provide support and stability. Lifting a building is a separate design consideration, so a concrete underpinning quote should not be read as a promise to restore the original levels.
How deep does concrete underpinning need to go?
The depth depends on the existing foundation, building loads and ground investigation. It is specified for the property by the engineer, rather than selected from a general rule.
How long does the work take?
Timing depends on the extent of underpinning, the planned sequence, access, ground conditions and inspection requirements. A programme can be discussed once the proposed scope is known.
Is resin a suitable alternative to concrete?
Sometimes. Resin improves the supporting ground, whereas traditional concrete underpinning adds structural support beneath the foundation. An assessment is needed to decide whether either method meets the building’s requirements.
Let’s discuss your foundation concerns
Tell KiKK about the building, the movement you have noticed and any advice you have already received. We’ll discuss the next steps for your project.