Steel BeamInstallers
Two installers seen from behind lifting a steel beam onto a padstone

RSJ installation · Blyth

RSJ installation in Blyth

Steelwork, approvals and making good for RSJ installation in Blyth and nearby.

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

Free survey in Blyth

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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

RSJ installation in Blyth: how it works

For homes in Blyth and the NE22 and NE24 districts, we handle RSJ installation from survey to sign-off. Blyth is around 11.4 miles from Newcastle upon Tyne, and we cover both. The beam is sized by a structural engineer and inspected before it is boxed in.

People still call almost any steel beam in a house an RSJ, even though the sections fitted today are usually universal beams with parallel flanges. Whatever the name, the job is the same: a length of structural steel, made to an engineer's specification, carrying floors, walls or roof over a space where support used to be.

What to expect

  • The engineer chooses the section type for the job. Universal beams suit most spans, universal columns are stockier and used as posts or where depth is limited, parallel flange channels fit against walls or timbers, and box sections suit slim or exposed members.
  • Delivery can make or break an RSJ job. A long beam has to turn through a front door, along a hallway and past the stairs, so routes are measured at the survey and alternatives such as a window opening are planned early.
  • An RSJ inside a home commonly needs 30-minute fire resistance where it supports elements of structure. Fire-rated plasterboard boxing is the usual method, with intumescent paint used when the beam is to remain visible.
  • Structural steel comes in recognised grades, and the engineer's drawing states which grade the calculations assume. The steel supplied matches that specification, and the delivery paperwork is kept so building control can see what has been fitted.
  • Floor joists can rest on the bottom flange, hang from timber packers bolted into the web, or be notched to sit over the steel. The engineer specifies the connection, and it affects how flush the finished ceiling can be.

How the job runs in Blyth

  1. Look and measure

    We check the wall, the span you want and what the wall is carrying, and photograph anything the engineer needs to see.

  2. Design and price

    Calculations come back from the engineer and we confirm your fixed written price, line by line.

  3. Building control

    We submit a building notice or full plans application to Northumberland County Council, so approval is in place before the wall is touched.

  4. Fit, inspect, finish

    The work is propped and the steel installed and packed tight. After inspection the opening is boxed, plastered and left clean.

How much should I budget in Blyth?

As a guide, budget £740–£2,320 per beam including VAT for rSJ supply and fit (single beam) in Blyth, based on published UK cost guides adjusted for prices in the North East (-7%).

JobTypical guide rangeWhat it usually covers
RSJ supply and fit (single beam)£740–£2,320 per beamBeam supplied, delivered, lifted and packed on padstones, with propping (calculations and approval priced separately)
Fire protection to a steel beam£140–£560 per beamFire-rated board boxing or an intumescent coating system as specified
Temporary works and propping£140–£460Props, spreaders, needles and sole plates for a typical opening, installed and struck
Steel beam replacement£1,850–£5,100Propping, removing the failed beam, new steel on proper bearings, approval and making good

Figures include our approximate regional adjustment for prices in the North East (-7%) and are rounded. How these figures are worked out.

Approvals in Blyth

For Blyth, building control is provided by Northumberland County Council, or by a registered building control approver if preferred. We send them the engineer's calculations with a building notice or full plans application and book the inspections. Work done without approval can cause problems at sale and is far dearer to put right later.

If the beam bears into a wall you share with a neighbour, the Party Wall etc. Act 1996 applies, and a party structure notice must be served at least two months before that work starts. We arrange this through a party wall surveyor.

Building rules in England

RSJ installation near Blyth

Local questions answered

Can you work on older or listed homes in Blyth?

Yes. Older homes often have lime mortar, timber lintels or shallow footings, which the engineer allows for. Listed buildings need listed building consent for internal structural changes as well as building regulations approval, and that must be in place first.

Do you cover Blyth for RSJ installation?

Yes. We carry out RSJ installation in Blyth and the NE22 and NE24 postcode districts. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.

Can you fit an RSJ to my own engineer's calculations?

Yes. We install to calculations and drawings from your engineer or architect, as long as they cover the beam, bearings and any columns or connections. If site conditions differ from what the design assumed, we check with the engineer before carrying on.

How is an RSJ installed?

The structure above is propped, the wall or opening is prepared, and padstones are bedded at each end. The beam is lifted onto them, bolted where needed and packed with shims and dry-pack. Props come out once it is carrying, building control inspects it, and the steel is then fire protected and finished.

What does RSJ stand for?

RSJ stands for rolled steel joist. It was the name for a hot-rolled I-shaped steel section with tapered flanges, and it is still used loosely for any steel beam in a house. Most steels fitted in homes today are universal beams, which do the same job with parallel flanges.

Do I need a party wall agreement for RSJ installation in Blyth?

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.

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.