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

Loft conversion steels · Northampton

Loft conversion steels in Northampton

Loft conversion steels in Northampton, from free survey to completion certificate.

  • Itemised written quote
  • Beam sized by a structural engineer
  • Covering Northampton and nearby

Free survey in Northampton

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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

Loft conversion steels in Northampton: how it works

For homes in Northampton and the NN1, NN2, NN3, NN4 and NN5 districts, we handle loft conversion steels from survey to sign-off. The wider Northamptonshire area is covered as well. The beam is sized by a structural engineer and inspected before it is boxed in.

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

  • 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.
  • 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.
  • Water tanks, cables, aerial leads and bathroom extract ducts often sit exactly where the steel needs to go. They are moved before the beams arrive, and old cold water tanks are frequently removed as part of the wider loft project.
  • Cutting pockets into a party wall for steel bearings is notifiable work in England and Wales under the Party Wall etc. Act 1996. A party structure notice must be served at least two months before that work starts, so it is worth raising early in the planning.
  • Headroom in the finished loft depends partly on where the floor steels sit. Setting them low, between the existing ceiling joists, keeps more height upstairs, and the engineer and loft designer agree the levels together.

What happens, step by step

  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 the local council's building control team, 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.

Guide prices for loft conversion steels in Northampton

As a guide, budget £2,450–£5,900 including VAT for loft conversion steels in Northampton, based on published UK cost guides adjusted for prices in the East Midlands (-2%).

JobTypical guide rangeWhat it usually covers
Loft conversion steels£2,450–£5,900Supply and fit of floor and ridge steels on padstones, including lifting into the roof space
Temporary works and propping£150–£490Props, spreaders, needles and sole plates for a typical opening, installed and struck
Steel column or post£490–£1,470 per columnColumn supplied and fitted with base and cap plates on a pad foundation
Party wall surveyor (agreed surveyor, per neighbour)£880–£1,960 per neighbourSchedule of condition and award where a neighbour dissents; serving notice alone, where the neighbour consents, costs far less (England and Wales only)

Figures include our approximate regional adjustment for prices in the East Midlands (-2%) and are rounded. How these figures are worked out.

Building control and neighbours in Northampton

In England, taking out a load-bearing wall or putting in a beam is building work under the Building Regulations 2010. It needs approval from building control, either the local council's building control team or a registered building control approver, through a full plans application or a building notice. Part A covers the structure and Part B covers fire safety, which is why steel in homes is usually fire protected.

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

Loft conversion steels near Northampton

Loft conversion steels in Northampton: your questions

What happens at the survey visit in Northampton?

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 you cover Northampton for loft conversion steels?

Yes. We carry out loft conversion steels in Northampton and the NN1, NN2, NN3, NN4 and NN5 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 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 I need building regulations for loft conversion steels?

Yes. Loft conversions are building work, and the steels form part of the structural design checked by building control in England, Wales and Northern Ireland. In Scotland a building warrant must be granted before work begins. The inspector checks the steel bearings before they are covered up.

How do you get steel beams into a loft?

It depends on access. Beams are often passed in through an opening made in the roof or a gable window, or brought up in shorter sections and bolted together in the loft where the engineer's design allows. For long or heavy steels a hoist or crane may be used, planned in advance.

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.