Risca · Gwent
Brick arch repairs in Risca
Rebuilding an arch in Risca is a precise job: a former cut to the exact curve, tight joints and a keystone set at the right height. Done well, the new arch looks as though it was always there.
Guide price from£370per arch inc VAT
- Postcodes
- NP10, NP11
- Population
- about 20,000
- Area
- Gwent
- Pricing region
- Wales
What should you know about the ground under Risca?
Postcode districts NP10, NP11 cover Risca, a Gwent town of about 20,000 people. If you are just outside Risca, we also cover Abercarn (3 miles), Newport (5 miles) and Cwmbran (5 miles).
Clay soils are found in parts of Gwent. Historic coal workings are recorded beneath parts of Gwent, and a coal mining search is worth checking where movement is unexplained. Across Gwent, most homes are valley terraces on steep hillsides, Victorian houses in Newport and Abergavenny, and post-war estates.
Methods for brick arch repairs
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
Rebuilding both faces
Where the arch shows inside as well as outside, or a rotten timber behind it has also failed, both faces are rebuilt. The inner timber is replaced with a suitable lintel, and the outer arch is reformed in front. The two are worked in sequence so the wall is supported throughout.
Best for: Arches with a failed timber or inner face
From first photo to finished repair
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.
Repair the arch
Bars are bonded into the joints above a sound arch, or the arch is taken down and relaid over the former using the original bricks where possible, with matched replacements for any that are damaged.
Symptoms that point to brick arch repairs
- Gaps opening between arch bricks at the top or bottom edge
- A vertical crack running up from the middle of the arch
- The centre bricks of an arch sitting lower than the rest
Guide prices for brick arch repairs in Risca
Guide prices below are for homes in Risca, on Wales rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| 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 |
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.
Frequently asked questions
How much should I budget for brick arch repairs in Risca?
Guide prices for brick arch repairs in Risca 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.
Can you survey a property in Risca?
Yes, Risca is covered, along with postcode districts NP10, NP11. We also cover nearby Abercarn and Newport.
Why do houses in Gwent crack?
The valleys of Blaenau Gwent, Torfaen and Islwyn lie on the South Wales coalfield with extensive historic workings and spoil tips, while Newport and Monmouthshire have Mercia Mudstone, alluvium and Old Red Sandstone. Only an investigation can say why a particular building has moved.
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.
Should a brick arch be repaired with lime mortar?
On older houses built with soft bricks and lime, yes, in most cases. Lime mortar lets the wall breathe and is weaker than the brick, so any movement or frost damage happens in the joints rather than the bricks. Modern hard brickwork can take a cement-based mortar.
Related work in Risca
- Bay window subsidence repairs
- Roof structure repairs
- Lintel replacement
- Crack stitching
- Mining subsidence repairs
Brick arch repairs near Risca
Once the brick and mortar match is agreed for your Risca arch, we put a fixed price in writing before any work is booked.