Llanelli · Dyfed
Brick arch repairs in Llanelli
If you live in a period home in Llanelli, the arches over your windows were probably laid in lime mortar. Rebuilding them in lime, with the original bricks cleaned and reused, keeps the wall breathing and the repair hard to spot.
Guide price from£370per arch inc VAT

- Postcodes
- SA15
- Population
- about 50,000
- Area
- Dyfed
- Pricing region
- Wales
Why does the ground in Dyfed matter for brick arch repairs?
Llanelli, Dyfed: about 50,000 residents across postcode districts SA15. Nearby, we also cover Gorseinon (5 miles), Swansea (10 miles) and Ammanford (11 miles).
Most of Dyfed is on firmer ground than the clay belts of the south-east. Parts of Dyfed lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Housing stock in Dyfed: Stone cottages, Victorian terraces in Llanelli and Carmarthen, and post-war estates.
What to look for before calling about brick arch repairs
- Mortar falling out of the arch joints after frosty weather
- Cracks stepping out from the arch ends into the wall
- A flat arch that has started to sag into a shallow curve
Brick arch repairs prices in Llanelli
The ranges below reflect typical Wales costs for brick arch repairs, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Stitching and reinforcing a sound archest. | £370 – £1,100 | per arch |
| Rebuilding an arch (one side) | £830 – £1,200 | per opening |
| Rebuilding an arch (both sides) | £1,650 – £2,400 | per opening |
How we usually approach brick arch repairs
Lime mortar repairs
On older houses built in soft brick and lime, the arch is rebuilt or repointed in a lime mortar matched to the original. Lime lets moisture escape and moves slightly with the wall, so it protects the bricks rather than forcing damage into them, as hard cement mortar can.
Best for: Pre-1919 houses and soft historic brick
Rebuilding over a former
A timber former is cut to the arch profile and propped under the opening. The old arch is carefully taken down, bricks cleaned for reuse, and the arch rebuilt over the former with tight joints and a properly set keystone. The former stays until the mortar is strong enough to carry the load.
Best for: Badly dropped arches or ones with loose voussoirs
What happens during brick arch repairs, step by step?
Look at the arch closely
Straight-on photos of the arch and the wall either side show us how far it has dropped, whether the bricks are sound and whether the cause seems to be the arch itself or the wall around it.
Choose reinforce or rebuild
We recommend reinforcement where the arch is sound and only slightly displaced, and a rebuild where it has dropped badly or bricks are loose. If the wall beside the opening is moving, that is dealt with first.
Support the opening
Props carry the brickwork above, and for a rebuild a former is made to the exact profile of the arch. The window or door frame is protected so it is not asked to carry any load.
Rules for brick arch repairs in Wales
In Wales, small like-for-like repairs do not usually need approval, but work that alters or strengthens the structure needs building control under the Welsh Building Regulations, and the Party Wall etc. Act 1996 can apply to shared walls.
Questions about brick arch repairs in Llanelli
How much will brick arch repairs cost in Llanelli?
Guide prices for brick arch repairs in Llanelli start from about £370 per arch, 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 Llanelli?
Yes. We take enquiries from across Llanelli, including SA15, and from nearby places such as Gorseinon and Swansea. Send photos for a free initial view and we will tell you what happens next.
Is the ground in Dyfed prone to subsidence?
The western edge of the South Wales coalfield lies beneath Llanelli, Ammanford and parts of Pembrokeshire, while the rest of the area is older hard rock with glacial deposits in the valleys. Only an investigation can say why a particular building has moved.
Can you match the original bricks?
Usually, because most arches are rebuilt with their own cleaned bricks, which is the best match of all. Damaged bricks are replaced with reclaimed or new bricks chosen for size, colour and texture, and the mortar is matched to the surrounding joints.
Why has the middle of my brick arch dropped?
The centre of an arch usually drops because the bricks have lost their wedge, either because the wall at the sides has moved or the mortar has worn away. A rotting timber hidden behind the arch is another common cause. The keystone slipping is the visible result.
Other structural repairs in Llanelli
- Mining subsidence repairs
- Floor joist repairs
- Boundary and garden wall repairs
- Roof structure repairs
- Structural surveys and crack monitoring
Brick arch repairs near Llanelli
Have several dropped arches along one Llanelli elevation? We can price them together and suggest the order that makes sense.