Steel BeamInstallers
Corroded old steel beam exposed for replacement, with props and a new beam on trestles

Steel beam replacement & repair · Wiltshire

Steel beam replacement & repair in Wiltshire

Survey, engineer's design and installation of steel beam replacement & repair anywhere in Wiltshire.

  • Survey, design and installation in one
  • Covering BA12, BA13, BA14, BA15
  • Inspected before it is covered

Free survey in Wiltshire

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  • Free survey visit
  • Engineer's calculations arranged
  • Building control handled
  • Fixed written price once scope is agreed
  • England, Wales, mainland Scotland & NI

Steel beam replacement & repair in Wiltshire: how it works

Steel beam replacement and repair means dealing with an existing beam that is corroded, sagging, undersized or poorly supported. A structural engineer inspects it and decides whether it can be repaired, strengthened with welded or bolted plates, given new bearings, or must be taken out and replaced, with the structure propped throughout.

Steel beam replacement & repair is one of the most common structural jobs in homes across Wiltshire. We can survey in places such as Chippenham, Swindon and Trowbridge and the villages around them. Every job starts with a survey visit, then calculations from a structural engineer, so the steel suits the house in front of us rather than a rule of thumb.

Worth knowing before you start

  • The full scope is sometimes clear only once the steel is exposed. We price the inspection and opening up first where needed, then provide an itemised quote for the repair the engineer specifies, so you are not committing to work before the problem is understood.
  • Missing paperwork for an old beam often surfaces when a house is being sold and the buyer's surveyor asks for calculations. An engineer's inspection, any remedial work and a regularisation or completion certificate together answer those questions.
  • Like-for-like repainting needs no approval, but strengthening, rebuilding bearings or replacing a beam is structural work that falls under building control. Where an earlier beam went in without approval, a regularisation application in England and Wales can be used to seek retrospective sign-off.
  • A repair only lasts if the cause is dealt with too. A leaking roof, blocked gutter or bridged damp-proof course that rusted the beam needs fixing first, otherwise new protective coatings will break down in the same way.
  • Whether to strengthen or replace is the engineer's decision. Plating, where steel plates are fixed to the flanges, can add capacity without removing the beam, but it is not suitable for every section, connection or level of damage.

What happens, step by step

  1. Free visit

    A short visit to Wiltshire to see the job, agree what you want and check the bearings, floors and services that affect the design.

  2. Calculations

    The engineer's calculations and a simple drawing are prepared for your opening and shared with you before anything is ordered.

  3. Building control

    We submit a building notice or full plans application to the local council's building control team, so approval is in place before the wall is touched.

  4. Steel in, made good

    On site we prop, open up, fit and pack the steel, then fire protect, box in and plaster once the inspection is done.

What does steel beam replacement & repair cost in Wiltshire?

As a guide, budget £2,050–£5,650 including VAT for steel beam replacement in Wiltshire, based on published UK cost guides adjusted for prices in the South West (+3%).

JobTypical guide rangeWhat it usually covers
Steel beam replacement£2,050–£5,650Propping, removing the failed beam, new steel on proper bearings, approval and making good
Building control fees£260–£670Building notice or full plans fee and inspections; varies by council or approver
RSJ supply and fit (single beam)£820–£2,580 per beamBeam supplied, delivered, lifted and packed on padstones, with propping (calculations and approval priced separately)
Temporary works and propping£150–£520Props, spreaders, needles and sole plates for a typical opening, installed and struck

Figures include our approximate regional adjustment for prices in the South West (+3%) and are rounded. How these figures are worked out.

Approvals in Wiltshire

Structural openings in English homes need building regulations approval before work starts. The local council's building control team can deal with it, or you can use a registered building control approver. Either way the steel is inspected before it is covered, and a completion certificate is issued at the end. Keep it safe for when you sell.

Terraced and semi-detached homes often need party wall notices, because cutting into a shared wall to take a beam end is notifiable under the Party Wall etc. Act 1996. Allow at least two months for the notice period unless your neighbour agrees sooner.

Building rules in England

Steel beam replacement & repair by town

Questions about steel beam replacement & repair in Wiltshire

Who approves steel beam replacement & repair in Wiltshire?

Structural work in Wiltshire needs a building notice or full plans application to the local council's building control team or a registered building control approver. We prepare and submit it with the structural engineer's calculations and arrange the inspections, so the completion paperwork follows the job.

Do I need a party wall agreement for steel beam replacement & repair in Wiltshire?

Yes, if the beam bears into a shared wall: the Party Wall etc. Act 1996 applies in England and Wales, and a party structure notice must be served at least two months before that work starts. We arrange it through a party wall surveyor.

What does it mean to plate a steel beam?

Plating means fixing extra steel plates to the beam, usually along the flanges, to increase its strength or stiffness without taking it out. The plates are bolted or welded according to the engineer's design. It suits some beams well, but not all, and the engineer checks the connections and bearings before specifying it.

How do I know if my steel beam is failing?

Look for cracks spreading from the ends of the beam, a dip you can see along its length, sticking doors or sloping floors above, and rust stains coming through the boxing. These signs do not always mean the steel is failing, but they do mean an engineer should inspect it and find the cause.

Why has my steel beam sagged?

A beam usually sags because it is too small for the load, the load has increased since it was fitted, or its bearings have crushed or moved. Every beam bends slightly within design limits, but a visible dip or new cracking suggests something has changed. An engineer can measure it and identify the cause.

How long does it take to replace a steel beam?

Anything from a day or two to around a week on site, depending on what the engineer specifies. Rebuilding a crushed bearing can be quick, while cutting out an old beam and fitting a new one in a typical room takes longer. Plastering and redecoration follow once building control has inspected the new steel.

How much does steel beam replacement & repair cost in Wiltshire?

As a guide, budget £2,050–£5,650 including VAT for steel beam replacement in Wiltshire, based on published UK cost guides adjusted for prices in the South West (+3%). The exact figure depends on the span, what the wall carries, access and the finish, and is fixed in writing once the scope is agreed.

Planning to take a wall out?

Book a free survey visit. You get an itemised written quote covering calculations, building control, steel and making good.