Steel BeamInstallers
Loft conversion with steel beams on padstones and new floor joists

Loft conversion steels · Clydach

Loft conversion steels in Clydach

Steelwork, approvals and making good for loft conversion steels in Clydach and nearby.

  • Free survey visit in Clydach
  • Engineer's calculations arranged
  • Building control handled for you

Free survey in Clydach

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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

Planning loft conversion steels in Clydach

Need loft conversion steels in Clydach? The wider Swansea area is covered as well. We survey the property, arrange the engineer's design, deal with Swansea Council, fit the steel and make good, all under one quote for SA6 and SA7 addresses.

The joists in most lofts were only ever meant to hold up a plaster ceiling, and the roof is often propped on struts and purlins that get in the way of a room. Steel beams solve both problems: they carry a new floor across the house and take over the roof support so the struts can come out.

What to expect

  • The steel stage of a loft conversion usually takes a few working days and comes early, before floor joists, dormer framing and insulation. Keep the steel calculations with the completion certificate, as both are asked for when the house is sold.
  • Steels supporting a loft floor commonly need 30-minute fire resistance in a typical house. That is usually achieved with fire-rated plasterboard below and around the steel, to the specification agreed with building control.
  • Building regulations also cover escape from the new room in a fire. In a typical house that often means a protected stairway with fire doors from the loft down to an exit, so the steel design sits within a wider fire safety approval.
  • Many later twentieth-century homes have trussed rafter roofs, with diagonal timbers running through the whole loft. Converting these involves more steel and new timber, because each truss is cut and its load has to be re-routed by design.
  • Loft steels usually bear on the gable wall in a semi-detached house or on the party wall in a terrace. The engineer checks that the wall below can take the point load and specifies padstones to spread it, sometimes with a steel post down to lower floors.

How the job runs in Clydach

  1. Free visit

    A short visit to Clydach 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 the application or notice to Swansea Council under the Building Regulations as they apply in Wales, before work starts.

  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.

Guide prices for loft conversion steels in Clydach

As a guide, budget £2,300–£5,450 including VAT for loft conversion steels in Clydach, based on published UK cost guides adjusted for prices in Wales (-9%).

JobTypical guide rangeWhat it usually covers
Loft conversion steels£2,300–£5,450Supply and fit of floor and ridge steels on padstones, including lifting into the roof space
Fire protection to a steel beam£140–£550 per beamFire-rated board boxing or an intumescent coating system as specified
Structural calculations for a beam£230–£680Site measure or photos, beam and padstone design and calculations for building control
RSJ supply and fit (single beam)£730–£2,280 per beamBeam supplied, delivered, lifted and packed on padstones, with propping (calculations and approval priced separately)

Figures include our approximate regional adjustment for prices in Wales (-9%) and are rounded. How these figures are worked out.

Approvals in Clydach

In Wales, structural alterations come under the Building Regulations 2010 as they apply in Wales. Swansea Council handles building control for Clydach. For work started or approved from 1 July 2026, the Welsh system uses an application to building control, dutyholders appointed in writing, a commencement notice before work starts and a compliance statement at the end.

The Party Wall etc. Act 1996 applies in Wales as well as England, so a beam bearing into a shared wall needs a party structure notice at least two months before work starts. We arrange notices through a party wall surveyor.

Building rules in Wales

Loft conversion steels near Clydach

Local questions answered

What happens at the survey visit in Clydach?

We look at the wall, the floor and ceiling either side and what sits above, measure the opening you want, and note cables, pipes and access for the steel. It usually takes under an hour and there is no charge.

Do I need a party wall agreement for loft conversion steels in Clydach?

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.

Where do loft conversion steels sit?

Usually between the gable walls or party walls, bearing on padstones bedded into pockets cut in the brickwork. Floor beams sit low, close to the existing ceiling, while ridge or dormer beams sit higher up to support the roof. The engineer sets the exact positions and levels.

What is a ridge beam in a loft conversion?

A ridge beam is a steel beam running along the top of the roof to support the rafters when their usual support is removed, such as when a large dormer is built or a hipped roof is converted to a gable. The engineer decides whether one is needed and specifies it.

Can my loft be converted if it has trussed rafters?

Often it can, but it is a bigger structural job. Trussed rafters have diagonal webs right through the loft, and every truss that is cut needs its load picked up by new steel and timber. The engineer designs that, and the roof is propped carefully throughout.

Do you also work near Clydach?

Yes. We also cover nearby towns including Neath, Briton Ferry, Gorseinon and Ammanford.

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.