Magherafelt · County Londonderry
Lintel replacement in Magherafelt
If a window at your Magherafelt property has started to stick and the brickwork above has dipped, the lintel is a likely suspect. Send pictures of both sides of the opening, and we will tell you what we think is happening.
Guide price from£660per opening inc VAT

- Postcodes
- BT45
- Population
- about 9,000
- Area
- County Londonderry
- Pricing region
- Northern Ireland
What is the ground like in County Londonderry?
Postcode districts BT45 cover Magherafelt, a County Londonderry town of about 9,000 people. We also take enquiries from nearby Cookstown (9 miles), Ballymena (15 miles) and Antrim (16 miles).
Most of County Londonderry is on firmer ground than the clay belts of the south-east. Ground movement here is more often linked to soils, drains and trees than to mining. Housing stock in County Londonderry: Georgian and Victorian houses in Derry, brick terraces and post-war estates.
Repair options we may recommend
Like-for-like replacement
The failed lintel comes out and one of suitable type and size is bedded on mortar with adequate bearing at each end. Bricks above are relaid to match the original bond and the joints are pointed to blend with the surrounding wall.
Best for: Standard windows and doors with a single failed lintel
Replacement with a cavity tray
A damp-proof membrane is laid over the new lintel with stop ends and weep holes, so water running down the cavity is directed out rather than into the house. Many older lintels were installed without one, which is often why they failed.
Best for: Cavity walls with damp above windows
What to expect when we carry out lintel replacement
Specify the replacement
We confirm the lintel type, length and bearing needed. For wide openings, bays or walls with unusual loads, an engineer may specify it, and where the repair needs an engineer’s design or sign-off we can arrange one.
Remove and replace
Brickwork is carefully taken out above the lintel, the old lintel removed and the new one bedded level on full bearings. A cavity tray goes in where relevant, then the brickwork above is relaid.
Remove supports and make good
Once the mortar has gained strength, props and needles come out and their holes are made good. Pointing, reveals and plaster are finished, and the window is refitted or checked for smooth operation.
Is it time for lintel replacement? Common signs
- Brickwork above an opening visibly dipping in the middle
- Window or door frames that have started to bind or distort
- Rust stains or flaking steel showing above the frame
What should you budget for lintel replacement in Magherafelt?
Prices in Magherafelt are worked out on Northern Ireland rates. They include VAT and are a starting point: access, the extent of the damage and whether an engineer or building control is involved all move the figure.
| Item | Guide price | Per |
|---|---|---|
| Standard window or door opening | £660 – £2,200 | per opening |
| Wide or bay openingest. | £1,750 – £3,950 | per opening |
| Making good inside and outest. | £130 – £530 | per opening |
Rules for lintel replacement in Northern Ireland
In Northern Ireland, the Building Regulations (Northern Ireland) 2012 apply and the council’s building control service approves structural work such as underpinning; minor like-for-like repairs usually need no approval. The Party Wall Act does not apply in Northern Ireland, so work to shared walls depends on deeds and agreement with neighbours.
Your lintel replacement questions
How much should I budget for lintel replacement in Magherafelt?
Guide prices for lintel replacement in Magherafelt start from about £660 per opening, including VAT, on Northern Ireland rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Magherafelt?
Yes. We take enquiries from across Magherafelt, including BT45, and from nearby places such as Cookstown and Ballymena. Send photos for a free initial view and we will tell you what happens next.
Why do houses in County Londonderry crack?
County Londonderry has basalt, older hard rock and glacial deposits, with soft river ground along the Foyle and Bann. Only an investigation can say why a particular building has moved.
How do I know if a lintel has failed?
The most common sign is a diagonal or stepped crack running up from the top corner of a window or door. Others include a dip in the brickwork above, rust or rot visible at the lintel edge, and windows that start to stick. A crack alone can have other causes, so it is worth checking.
Do I need building regulations approval to replace a lintel?
In England and Wales, replacing a lintel is structural work and building control will usually need to approve it. Rules differ in Scotland and Northern Ireland. We deal with building control where the work needs it, and include the cost in the quote.
Related work in Magherafelt
Lintel replacement near Magherafelt
If rust is showing above the windows of your Magherafelt home, photograph it close up and we will tell you whether replacement is due.