County Londonderry · Northern Ireland
Lintel replacement in County Londonderry
If you live in County Londonderry and are looking at lintel replacement, the first question is why the wall moved. Shrinkable clay is less common in County Londonderry than in south-east England; ground movement here is more often linked to soils, drains and trees than to mining.
Guide price from£660per opening inc VAT
- Area
- County Londonderry
- Pricing region
- Northern Ireland
- Ground
- Mostly firmer ground
- Towns listed
- 4
What should you know about the ground under County Londonderry?
County Londonderry has basalt, older hard rock and glacial deposits, with soft river ground along the Foyle and Bann.
Ground movement here is more often linked to soils, drains and trees than to mining. Across County Londonderry, most homes are Georgian and Victorian houses in Derry, brick terraces and post-war estates.
Lintel replacement prices in County Londonderry
These are guide prices for County Londonderry, using Northern Ireland rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| 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 |
How we usually approach lintel replacement
Propping and needling
Adjustable props carry the wall above while the old lintel comes out. For heavier walls, short steel needles are passed through holes cut above the opening and propped on both sides, taking the load off the lintel completely. The supports stay until the new work has set.
Best for: Openings with heavy walls, upper floors or bay windows above
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
Inner and outer lintel replacement
Solid walls and some cavity walls carry separate lintels on the inside and outside faces. Where both have failed, each is replaced in turn, keeping the wall supported throughout. Internal plaster and reveals are then made good and redecorated where included.
Best for: Older solid walls with rotten timber across the inner face
What happens during lintel replacement, step by step?
Inspect the opening
We look at the crack pattern, the type of lintel and what sits above it. Pictures of both faces of the window, plus any visible lintel edge, help us judge it before visiting.
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.
What to look for before calling about lintel replacement
- A diagonal crack climbing away from a window head
- Brickwork above an opening visibly dipping in the middle
- Rust stains or flaking steel showing above the frame
- Soft, crumbly timber visible behind the brick face over a bay
Do you need approval 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.
Towns in County Londonderry we cover for lintel replacement
Questions about lintel replacement in County Londonderry
Is the ground in County Londonderry prone to subsidence?
County Londonderry has basalt, older hard rock and glacial deposits, with soft river ground along the Foyle and Bann. Ground movement here is more often linked to soils, drains and trees than to mining. Only an investigation on site can say why a particular building has moved.
How much will lintel replacement cost in County Londonderry?
On Northern Ireland rates, lintel replacement starts from about £660 per opening, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
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.
What does needling a wall mean?
Needling means passing short steel members through holes cut in the wall just above the opening and supporting them on props on both sides. The needles take the weight of the wall above, so the old lintel can be removed safely without any brickwork dropping.
Is it safe to live in the house during lintel replacement?
Yes, in almost all cases. The wall is fully supported before anything is removed, and the work is confined to one opening at a time. The affected room is sheeted against dust and kept clear while props are in place.