High Wycombe · Buckinghamshire
Lintel replacement in High Wycombe
If a window at your High Wycombe 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£840per opening inc VAT

- Postcodes
- HP11, HP12, HP13
- Population
- about 130,000
- Area
- Buckinghamshire
- Pricing region
- South East
What is the ground like in Buckinghamshire?
High Wycombe (HP11, HP12, HP13) has around 130,000 residents and sits in Buckinghamshire. Nearby, we also cover Marlow (4 miles), Amersham (6 miles) and Maidenhead (7 miles).
Shrinkable clay is widespread in Buckinghamshire. Ground movement here is more often linked to soils, drains and trees than to mining. Across Buckinghamshire, most homes are market-town terraces, 1930s semis in the south, and large late-20th-century estates in Milton Keynes and Aylesbury.
What happens when we carry out lintel replacement in High Wycombe?
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.
Signs you may need lintel replacement
- Soft, crumbly timber visible behind the brick face over a bay
- Damp patches on the inside wall just above a window
- Rust stains or flaking steel showing above the frame
How much will lintel replacement cost in High Wycombe?
Guide prices below are for homes in High Wycombe, on South East rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Standard window or door opening | £840 – £2,800 | per opening |
| Wide or bay openingest. | £2,250 – £5,050 | per opening |
| Making good inside and outest. | £170 – £670 | per opening |
Which repair method suits a home in High Wycombe?
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
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
Rules for lintel replacement in England
In England, underpinning and other work that alters or strengthens a wall or foundation is building work under the Building Regulations (Part A, structure), so building control approves and inspects it. Like-for-like repairs often are not, and we tell you which applies before a price is agreed. Work to a party wall, or excavation close to a neighbour’s foundations, can also need a notice under the Party Wall etc. Act 1996.
Lintel replacement in High Wycombe: questions and answers
How much should I budget for lintel replacement in High Wycombe?
Guide prices for lintel replacement in High Wycombe start from about £840 per opening, including VAT, on South East 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 High Wycombe?
We do. High Wycombe and the surrounding area are covered, including nearby Marlow and Amersham. A free initial assessment from your photos is the first step.
Why do houses in Buckinghamshire crack?
The Chilterns are chalk with clay-with-flints on the tops, while the Vale of Aylesbury and Milton Keynes sit on Gault, Kimmeridge and Oxford Clays and glacial till. The vale clays are prone to seasonal shrinkage near trees. Only an investigation can say why a particular building has moved.
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.
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.
Related work in High Wycombe
- Wall tie replacement
- Brick arch repairs
- Resin injection ground stabilisation
- Subsidence insurance claim repairs
- Roof structure repairs
Lintel replacement near High Wycombe
Our quote tool shows guide prices for a High Wycombe lintel replacement; add photos and we can confirm the likely opening size and type.