Rickmansworth · Hertfordshire
Lintel replacement in Rickmansworth
Bay windows on older houses around Rickmansworth often hide a timber lintel behind the face brickwork. When that timber rots, the bay brickwork drops and cracks, and replacing it properly means supporting the wall above throughout the job.
Guide price from£790per opening inc VAT

- Postcodes
- HA6, WD3, WD18
- Population
- about 25,000
- Area
- Hertfordshire
- Pricing region
- East of England
Why does the ground in Hertfordshire matter for lintel replacement?
Rickmansworth is in Hertfordshire and takes in postcode districts HA6, WD3, WD18. About 25,000 people live there. If you are just outside Rickmansworth, we also cover Watford (4 miles), Gerrards Cross (5 miles) and Amersham (6 miles).
Hertfordshire is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. Across Hertfordshire, most homes are garden-city houses in Letchworth and Welwyn, 1930s semis, Victorian terraces and post-war new-town estates.
Guide prices for lintel replacement in Rickmansworth
Prices in Rickmansworth are worked out on East of England 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 | £790 – £2,600 | per opening |
| Wide or bay openingest. | £2,100 – £4,700 | per opening |
| Making good inside and outest. | £160 – £630 | 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
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
From first photo to finished repair
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.
Support the wall
Props or needles are set so the brickwork above carries no load on the old lintel. Windows are protected or temporarily removed where the work demands it, and the room inside is sheeted against dust.
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.
Symptoms that point to lintel replacement
- Damp patches on the inside wall just above a window
- Brickwork above an opening visibly dipping in the middle
- Window or door frames that have started to bind or distort
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.
Frequently asked questions
What is the price of lintel replacement in Rickmansworth?
Guide prices for lintel replacement in Rickmansworth start from about £790 per opening, including VAT, on East of England rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out lintel replacement in Rickmansworth?
Yes, Rickmansworth is covered, along with postcode districts HA6, WD3, WD18. We also cover nearby Watford and Gerrards Cross.
Does the ground around Rickmansworth cause cracking?
South Hertfordshire around Watford, Borehamwood and Potters Bar is London Clay, while the north and west are chalk with clay-with-flints and the east has boulder clay. The clay areas are prone to seasonal subsidence near trees. Only an investigation can say why a particular building has moved.
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.
How long does it take to replace a lintel?
Most single lintels are replaced in one to two days. The props stay in until the mortar has gained enough strength, and wide bays or openings with both inner and outer lintels can take longer. The window can usually be used again once the supports come out.
More repairs we carry out in Rickmansworth
- Underpinning
- Structural surveys and crack monitoring
- Structural crack repairs
- Extension pulling away repairs
- Resin injection ground stabilisation
Lintel replacement near Rickmansworth
Send photos of the cracked or sagging opening at your Rickmansworth home for a free initial assessment and an honest view on the lintel.