Lintel replacement · Belfast
Lintel replacement in Belfast
Survey, engineer's design and installation of lintel replacement anywhere in Belfast.
- Itemised written quote
- Beam sized by a structural engineer
- Covering Belfast and nearby
- Free survey visit
- Engineer's calculations arranged
- Building control handled
- Fixed written price once scope is agreed
- England, Wales, mainland Scotland & NI
Lintel replacement in Belfast: how it works
Lintel replacement is the removal of a failed beam above a window, door or other opening and its replacement with a new lintel specified by a structural engineer. The masonry above is held on temporary supports while the old lintel comes out, the new one is bedded level on sound bearings, and the brickwork and plaster around it are rebuilt and made good.
If you are planning lintel replacement in Belfast, the order of work matters as much as the steel: survey, calculations, approval, propping, installation, inspection and making good. We work in Castlereagh and the surrounding villages. We run that sequence for you as one job with one point of contact.
Worth knowing before you start
- The replacement is specified by a structural engineer, who looks at the opening width, the wall construction and what the lintel carries, such as floor joists, a bay roof or a gable. Solid walls and cavity walls usually call for different lintel types.
- While the old lintel is out, the brickwork above sits on adjustable steel props with needles or masonry prop heads fixed through the mortar joints. The props stand on boards or spreaders so their load is shared across the ground or floor beneath.
- Bricks taken down are cleaned and reused where possible, and any shortfall is made up with reclaimed or close-matching bricks. Mortar is mixed to suit the colour and strength of the existing wall, which in older homes often means a lime mortar.
- Older steel lintels and bare steel angles can corrode where water sits on them. Rust takes up more room than the steel it comes from, so a corroding lintel can lift the brick course above it and open up horizontal cracks.
- Windows and doors can often stay in place during a lintel replacement, keeping the house secure and weathertight. Where a frame has been carrying sagging brickwork for some time, it may need adjusting or replacing once the new lintel takes the load.
What happens, step by step
Free visit
A short visit to Belfast to see the job, agree what you want and check the bearings, floors and services that affect the design.
Calculations
The engineer's calculations and a simple drawing are prepared for your opening and shared with you before anything is ordered.
Building control
A full plans application or building notice goes to Belfast City Council under the Building Regulations (Northern Ireland) 2012 before work begins.
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 lintel replacement in Belfast
As a guide, budget £340–£1,030 per lintel including VAT for lintel replacement in Belfast, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Lintel replacement | £340–£1,030 per lintel | Propping, removing the old lintel, new lintel set on beds and brickwork made good |
| Steel beam replacement | £1,700–£4,750 | Propping, removing the failed beam, new steel on proper bearings, approval and making good |
| Plastering and making good | £260–£1,030 | Boxing the beam, bead and skim, reveals, floor infill where the wall stood and tidy-up |
| Temporary works and propping | £130–£430 | Props, spreaders, needles and sole plates for a typical opening, installed and struck |
Figures include our approximate regional adjustment for prices in Northern Ireland (-14%) and are rounded. How these figures are worked out.
Building rules for Belfast
Building control in Belfast is run by Belfast City Council. Beams and new openings are controlled work under the Northern Ireland regulations, so we apply before anything is removed and the steel is inspected before it is covered.
Northern Ireland has no Party Wall Act, so there is no statutory notice to serve. Where the steel bears into a shared wall, the title deeds and the general law apply, and agreeing the work with your neighbour in writing first is good practice.
Lintel replacement by town
Local questions answered
Which towns in Belfast do you cover?
We cover towns including Castlereagh, plus the villages and smaller towns around them.
Do I need a party wall agreement for lintel replacement in Belfast?
There is no Party Wall Act in Northern Ireland. Your title deeds and the general law apply instead, so agree the work with your neighbour in writing before it starts.
Why is my concrete lintel cracking and flaking?
Usually because the steel reinforcement inside has rusted. Rust takes up more space than steel, so it pushes the concrete cover off, exposing more steel to damp and speeding up the damage. An engineer checks whether the lintel can still do its job, but in many cases replacement is the sensible fix.
What type of lintel will be fitted?
The engineer decides, based on the opening width, the wall construction and the load above. Steel lintels are common in cavity walls, while solid walls or wide openings may suit a different type or a steel section. We fit what the specification calls for rather than a one-size option.
Can a lintel be replaced without removing the window?
Often, yes. The brickwork above is propped, the old lintel is taken out and the new one fitted while the frame stays in place under protection. If the frame has been carrying weight because the old lintel sagged, it may need easing or adjusting once the new lintel is in.
Can a timber lintel in an old house be replaced with steel or concrete?
Yes, where the engineer is satisfied it suits the wall. Timber lintels in older solid-walled homes are often swapped for a steel or concrete alternative that will not rot. The engineer considers how the wall is built, and where lime mortar is present the rebuild uses a compatible mortar.
Do you cover Belfast for lintel replacement?
Yes. We carry out lintel replacement in Belfast. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.