Llantrisant · Mid Glamorgan
Lintel replacement in Llantrisant
Rusting steel over the windows of a Llantrisant home lifts and cracks the brickwork it carries. Replacing it involves propping or needling the wall, swapping in a new lintel and relaying the bricks to match.
Guide price from£690per opening inc VAT

- Postcodes
- CF38, CF72
- Population
- about 14,000
- Area
- Mid Glamorgan
- Pricing region
- Wales
What is the ground like in Mid Glamorgan?
Llantrisant (CF38, CF72) has around 14,000 residents and sits in Mid Glamorgan. Neighbouring towns we cover: Pontypridd (4 miles), Tonypandy (7 miles) and Caerphilly (7 miles).
Parts of Mid Glamorgan have clay that can shrink near trees in dry spells. Historic coal workings are recorded beneath parts of Mid Glamorgan, and a coal mining search is worth checking where movement is unexplained. Across Mid Glamorgan, most homes are long stone and brick terraces on valley sides, Victorian houses in Bridgend and post-war estates.
Which repair method suits a home in Llantrisant?
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 happens when we carry out lintel replacement in Llantrisant?
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.
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 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
- Rust stains or flaking steel showing above the frame
- Soft, crumbly timber visible behind the brick face over a bay
- Damp patches on the inside wall just above a window
How much will lintel replacement cost in Llantrisant?
The ranges below reflect typical Wales costs for lintel replacement, including VAT. Scaffold, access and making good can push a job to the top of the range.
| 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 |
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.
Lintel replacement in Llantrisant: questions and answers
What is the price of lintel replacement in Llantrisant?
Guide prices for lintel replacement in Llantrisant 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 carry out lintel replacement in Llantrisant?
We do. Llantrisant and the surrounding area are covered, including nearby Pontypridd and Tonypandy. A free initial assessment from your photos is the first step.
Does the ground around Llantrisant cause cracking?
Mid Glamorgan lies on the South Wales coalfield, with dense historic workings, spoil tips and steep valley sides. Landslip, retaining walls and mining legacy are all live issues in the valleys. Only an investigation can say why a particular building has moved.
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.
Can a lintel be replaced without removing the window?
Often yes. With the wall propped or needled, the old lintel can usually be cut out above the frame. If the frame has been carrying load or the lintel sits tight on it, the window may need removing and refitting, which we include in the quote.
More repairs we carry out in Llantrisant
- Subsidence repairs
- Wall tie replacement
- Subsidence insurance claim repairs
- Crack stitching
- Gable end wall repairs
Lintel replacement near Llantrisant
You will get a no-obligation written quote for each Llantrisant lintel, splitting out the lintel itself, the propping and the making good.