Steel BeamInstallers
Rear wall opened for wide doors with a galvanised steel beam and props, garden beyond

Bi-fold & sliding door openings · Exmouth

Bi-fold & sliding door openings in Exmouth

Steelwork, approvals and making good for bi-fold & sliding door openings in Exmouth and nearby.

  • Survey, design and installation in one
  • Covering EX8
  • Inspected before it is covered

Free survey in Exmouth

Tell us about the bi-fold & sliding door opening job in Exmouth.

Please enter your name.
Please enter a UK phone number.
Please enter a valid email.
Please enter a UK postcode.
Please tell us a little about the job.
  • Free survey visit
  • Engineer's calculations arranged
  • Building control handled
  • Fixed written price once scope is agreed
  • England, Wales, mainland Scotland & NI

Bi-fold & sliding door openings in Exmouth: how it works

For homes in Exmouth and the EX8 district, we handle bi-fold & sliding door openings from survey to sign-off. We also work in nearby Exeter, roughly 9.2 miles away. The beam is sized by a structural engineer and inspected before it is boxed in.

We coordinate the structure with your door supplier's sizes, so the finished opening matches the frame. The survey visit, structural calculations from a qualified engineer, building control, propping, steel, cavity trays, weather protection while the wall is open and making good are all covered in one itemised written quote.

Key points for your project

  • New brickwork at the reveals and above the opening should match the existing in colour, size and bond. Sound bricks from the wall being removed are often cleaned and reused, and the mortar colour is matched as closely as possible.
  • In cavity walls a cavity tray above the new head directs any water in the cavity out through weep vents. Without it, damp can show inside above the doors, so the tray is lapped and sealed correctly as the brickwork is rebuilt.
  • Door suppliers quote a structural opening size, which allows for the frame and fixing tolerances. Agreeing that size before the steel is designed avoids reveals that are too tight or gaps that have to be packed out later.
  • A wide glazed opening changes the security of the back of the house. During the works the opening is boarded at night if the doors are not yet fitted, and it is worth checking the locking and glass specification of the doors you choose.
  • Both leaves of a cavity wall need support over the opening. Depending on the design, the outer brickwork may sit on a plate fixed to the beam or on a separate external lintel, and the engineer specifies which suits the loads and the look.

From survey to sign-off in Exmouth

  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.

What do bi-fold & sliding door openings cost in Exmouth?

As a guide, budget £2,600–£7,200 including VAT for rear wall opening for bi-fold or sliding doors in Exmouth, based on published UK cost guides adjusted for prices in the South West (+3%).

JobTypical guide rangeWhat it usually covers
Rear wall opening for bi-fold or sliding doors£2,600–£7,200External wall opened up to about 5 m with steel, propping, cavity tray and making good (doors supplied separately)
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)
Widening an internal doorway£1,050–£2,600Opening widened with a new lintel or short beam, approval where structural, and making good
Opening into a rear extension£2,600–£7,200Original rear wall removed with a beam or goalpost, approvals and propping, coordinated with the extension build

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

Building control and neighbours in Exmouth

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

Bi-fold & sliding door openings near Exmouth

Bi-fold & sliding door openings in Exmouth: your questions

Can I stay at home while the work is done in Exmouth?

Usually, yes. The work area is screened and floors are protected. The rooms either side of the opening are out of action for a few days, and there is some noise and dust while the masonry comes out.

How much do bi-fold & sliding door openings cost in Exmouth?

As a guide, budget £2,600–£7,200 including VAT for rear wall opening for bi-fold or sliding doors in Exmouth, 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.

Will the house be open to the weather while the wall is out?

Only briefly, and it is protected throughout. Once the wall is out, the opening is sheeted or boarded so it stays weathertight and secure until the doors arrive. Timing the structural work close to the door delivery date keeps that period as short as possible.

How long does it take to make an opening for bi-fold doors?

The structural opening usually takes three to five working days, including propping, cutting out the wall, fitting the steel and outer leaf support, and forming the reveals. The doors can then be fitted, with inside making good and outside brickwork finishing following on. Lead times on made-to-order doors affect the overall timeline more than the steelwork.

What does a bi-fold opening quote include?

Our itemised written quote covers the survey, calculations, building control, propping, removing the wall, steel and padstones, outer leaf support, cavity trays and closers, temporary weather protection and making good. Doors, threshold drainage and patio work are shown separately unless agreed. The price is fixed in writing once the opening size and specification are agreed.

Do you cover Exmouth for bi-fold & sliding door openings?

Yes. We carry out bi-fold & sliding door openings in Exmouth and the EX8 postcode districts. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.

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.