Steel beams, underpinning, foundations, drainage

Structural work and groundworks.

The part of building that nobody sees and everything depends on: beams, foundations, underpinning and drainage, with the calculations and the inspections done right.

Foundation trenches with steel reinforcement being filled with concrete from a pump

We do our own groundworks and structural work rather than subcontracting them, because the foundations decide whether the extension is still square in twenty years.

Foundations, trench-fill and piled; drainage and soakaways; retaining walls; underpinning for subsidence or basements; steel beams and goalpost frames for open-plan layouts and bifold openings. All designed by a chartered structural engineer and inspected by building control at the stages the regulations require.

We also take on structural repairs: cracked lintels, bowed walls, rotten joist ends and the surveys that come with buying an older house.

What is included

  • Structural engineer's design and calculations
  • Foundations: trench-fill, raft and piled
  • Drainage, soakaways and connections
  • Steel beams, padstones and goalpost frames
  • Underpinning and retaining walls
  • Building control inspections arranged

Examples

Projects like this.

All projects

ExtensionRhiwbina, Cardiff11 wks

Rear extension, Rhiwbina

A failing conservatory replaced by a 6.2 metre single-storey extension with a roof lantern and four-panel sliding doors, built in eleven weeks under permitted development.

£68,000Before / after

RenovationPontcanna, Cardiff16 wks

Victorian terrace renovation, Pontcanna

A whole-house renovation of an 1890s terrace: rewire, re-plumb, two rooms knocked into one, a new kitchen and bathroom, and the cornices and floorboards brought back rather than ripped out.

£92,000

Questions people ask

Do you do just the steel beam?

Yes, with the calculation, the building regulations application, the temporary works and the making good. Most are done in two to four days.

Start with a site visit.

Gareth or Claire will come out, measure up and give you a straight answer on what is possible and roughly what it costs. No charge, no obligation, no hard sell.