Designed to Build · Sheffield & South Yorkshire

RSJ & Steel Beam Installation in Sheffield

Structural steelwork for open plan living, loft conversions, extensions and repairs. Plan the engineering, installation and making good as one coordinated project.

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Structural steel during a build

An exposed steel beam and timber joists photographed during our residential project, before the internal finishes were completed.

Red structural steel beam beneath timber joists in an unfinished room — Structural steel and timber joists during the project build.

Steelwork for changes to your home or premises

Structural steel is central to many home transformations, from removing a load-bearing wall to supporting a loft floor or opening the back of a house into an extension. Designed to Build provides RSJ and steel beam installation in Sheffield and South Yorkshire, with structural design and the wider building work considered together.

RSJ means rolled steel joist. The term is often used for structural beams generally, but the engineer may specify a universal beam, column or another section. The important detail is the designed support system, not the informal name.

Open plan living

Create a kitchen-diner or larger living space with the necessary support for the structure above.

Wall removal and open plan steelwork

Lofts and extensions

Coordinate new floors, roof alterations and larger openings with the design of the additional space.

Loft conversion steelwork · Extension steelwork

Replacement and repairs

Assess existing support and the cause of defects before agreeing a repair or replacement specification.

Structural repairs

Commercial work

Plan structural alterations around the intended use, access and constraints of the premises.

Commercial steel installation

Survey, design and installation

Structural steelwork starts with the building and the loads it must support. A structural engineer specifies the beam, bearings, connections and any associated foundations or posts. A beam size taken from another house or an online table is not a substitute for calculations for your property.

Before installation, the work needs a coordinated plan for access, delivery, lifting, temporary support, services and the inspection stages. Existing walls and floors can conceal details that only become clear during opening up. Any change affecting the design should be referred back to the engineer before work proceeds.

The finished scope can include fire protection, boxing in, plastering and other making good. Agree these items in writing so the structural installation and the room finish meet at a clear handover point.

What affects the quotation?

The span alone does not determine the installed price. Loads, steel weight, number of beams, connections, access, delivery and lifting arrangements, padstones or posts, temporary works and the surrounding building all matter. Engineering fees, building control, service alterations, fire protection, decoration and VAT should be identified in the quotation.

We quote for the assessed scope rather than advertising a universal starting price. If the steelwork forms part of a larger project, see our loft conversion cost guide or house extension cost guide for the wider budget.

Approvals and neighbouring property

Structural alterations need the appropriate Building Regulations process. Planning permission and building control are separate matters. Work involving a party wall or certain excavations near neighbouring buildings may also require the Party Wall etc. Act process. Check the position early with the relevant professionals.

Read the official party wall guidance. Keep the engineer’s design, inspection records and completion documentation with your property records.

Related steelwork services

Planning more space? Explore our Sheffield loft conversions and house extensions.

Steel beam installation questions

Can I remove a wall before the beam is designed?

No. Establish whether it carries load and obtain the design and a professional installation plan before structural work begins.

Can the beam be hidden in the ceiling?

Sometimes. Floor depth, connection details, services and the loads can limit the available arrangement. Discuss the finish with the engineer and builder during design.

Do you provide a fixed starting price?

The installed cost depends on the assessed structure and scope. Request a quotation identifying the engineering, installation, approvals and making good.

Discuss your project

Send your postcode, photographs and any existing drawings. We can review the proposed work and explain the next steps for a site survey and written quotation.