National Underpinning

Underpinning, the right way for your property.

Six methods, one decision per job. Here is what each one does and when it makes sense.

Beam and base underpinning

A reinforced beam is cast under or beside the wall, transferring weight to concrete bases founded at depth.

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Expanding geopolymer foam injected at depth to fill voids and re-level slabs and footings.

Sequential excavation in short bays beneath the existing footing, then filled with concrete to transfer load to firmer ground below.

Small-diameter piles driven or bored to depths well beyond the reach of hand-dug methods, capped with a reinforced beam.

Structural resin injected through small ports below the foundation. The resin expands, fills voids, and stiffens weak soil.

Steel helical piles screwed into the ground to a tested depth, then connected to the structure with brackets or a beam.

A surveyor will be in touch within 48 hours.