Steel in Hadley Wood is heavier than steel in most of North London, because the spans are longer. A six metre opening in an Edwardian villa is routine here and a nine metre one is not unusual on a rear extension. We appoint the engineer, take delivery, get the section into position and hold the building control inspections.
Sizing and lifting steel in EN4 houses
Beam choice follows the span and what sits above it. A short opening in a postwar detached house off Beech Hill might take a modest universal beam; a full width opening under two storeys of Edwardian brickwork can need a deep section, twin beams bolted together with a plate between them, or a universal column where headroom is tight. Padstones are sized to the bearing stress the brickwork below can actually take, which in soft lime mortared Edwardian walls is less than people tend to assume.
Getting it in is the other half. Hadley Wood's long driveways and wide side accesses are a genuine advantage; on most plots a lorry with a hiab can set the steel down within a few metres of where it is going, which is not true in inner London. Where the beam has to travel through the house, it comes in on rollers and a gantry rather than on shoulders. We check the delivery route and the turning circle at survey, before the section is even ordered.
Propping, sequence and sign off in Hadley Wood
Temporary works matter more as the span grows. Needles through the wall on strongboys, props on spreader boards rather than straight onto a suspended timber floor, and a propping layout that reflects where the load actually comes down. We take the masonry out in stages, never in one go, and the beam goes up onto its padstones before anything above it is disturbed further. Props are struck in a controlled order once the bearings are packed and the mortar has gained strength, not on the day the steel arrives.
Barnet Council building control, or a registered building control approver, inspects the bearings and the beam before they are covered and issues the completion certificate you will need on sale. Fire protection follows: a steel supporting a floor in a house needs thirty minutes' resistance under Approved Document B, normally two layers of plasterboard properly jointed rather than one skimmed coat. On a detached EN4 house there is usually no party wall notice to serve, which removes the two month wait a terrace owner faces.
- Ceiling and floor levels resolved where the beam sits below joists
- RSJ and structural steel beam installation
- Flitch beams where a slimmer steel and timber solution suits
- Concrete and high-density padstones at every bearing
- Existing pipework and cabling diverted around the new opening
Trusted RSJ and Steel Beam Installation in Hadley Wood
Long spans are where cheap steel work goes wrong, and Hadley Wood is all long spans. GS Renovation appoints the structural engineer, orders to the specification, plans the lift and the propping before the first brick moves, and gets Barnet building control to inspect the bearings before they are hidden. Founder led, fully insured, with more than 30 years of hands on structural experience.
- Levels and deflection checked before the props come out
- Steel ordered cut, drilled and primed to the schedule
- Building control applications and inspections coordinated for you
- Restricted London access planned before the steel arrives
- Registered in England, Companies House no. 14611254
- Aftercare and snagging support once the job is finished