Bangor · Gwynedd
Lintel replacement in Bangor
For a failed lintel in Bangor, the new one needs the right length, the right bearing and, in cavity walls, a tray to carry water out. Those details are what make the repair last, and they are set out in our quote.
Guide price from£690per opening inc VAT

- Postcodes
- LL57, LL59
- Population
- about 18,000
- Area
- Gwynedd
- Pricing region
- Wales
What should you know about the ground under Bangor?
Postcode districts LL57, LL59 cover Bangor, a Gwynedd town of about 18,000 people. Neighbouring towns we cover: Llangefni (8 miles), Caernarfon (9 miles) and Llandudno (14 miles).
Clay shrinkage is less of a concern in Gwynedd, so other causes such as drains, poor footings or older walls are checked first. Old metal-mine shafts and workings are recorded in places, so mining searches are routine for some properties. What you mostly find across Gwynedd: slate and stone terraces, chapels and cottages, Victorian seaside houses and post-war estates.
Symptoms that point to lintel replacement
- Soft, crumbly timber visible behind the brick face over a bay
- Rust stains or flaking steel showing above the frame
- A diagonal crack climbing away from a window head
Guide prices for lintel replacement in Bangor
For Bangor we use Wales rates. Treat the table as a budget guide, inc VAT; the price you pay is the one on your written quote.
| Item | Guide price | Per |
|---|---|---|
| Standard window or door opening | £690 – £2,300 | per opening |
| Wide or bay openingest. | £1,850 – £4,150 | per opening |
| Making good inside and outest. | £140 – £550 | per opening |
Methods for lintel replacement
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
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
From first photo to finished repair
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.
Rules for lintel replacement in Wales
In Wales, the Welsh version of the Building Regulations applies. Underpinning and other work that alters or strengthens the structure needs building control approval and inspection; like-for-like repairs often do not. The Party Wall etc. Act 1996 applies to work on party walls and excavation close to a neighbour’s foundations.
Frequently asked questions
How much will lintel replacement cost in Bangor?
Guide prices for lintel replacement in Bangor start from about £690 per opening, including VAT, on Wales rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you cover Bangor?
We do. Bangor and the surrounding area are covered, including nearby Llangefni and Caernarfon. A free initial assessment from your photos is the first step.
Is the ground in Gwynedd prone to subsidence?
Gwynedd and Anglesey are mostly hard rock with glacial deposits, so clay shrinkage is uncommon. Historic slate quarrying and metal mining have left tips and workings in places. Only an investigation can say why a particular building has moved.
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.
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.
Other structural repairs in Bangor
Lintel replacement near Bangor
You will get a no-obligation written quote for each Bangor lintel, splitting out the lintel itself, the propping and the making good.