St Helens · Merseyside
Brick arch repairs in St Helens
Rebuilding an arch in St Helens 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£385per arch inc VAT

- Postcodes
- WA9, WA10, WA11
- Population
- about 180,000
- Area
- Merseyside
- Pricing region
- North West
Why does the ground in Merseyside matter for brick arch repairs?
St Helens is in Merseyside and takes in postcode districts WA9, WA10, WA11. About 180,000 people live there. Neighbouring towns we cover: Prescot (3 miles), Ashton-in-Makerfield (4 miles) and Huyton (5 miles).
Clay soils are found in parts of Merseyside. Parts of Merseyside lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Merseyside, most homes are Victorian terraces and villas, inter-war council estates and post-war semis.
Brick arch repairs prices in St Helens
These are guide prices for St Helens, using North West rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Stitching and reinforcing a sound archest. | £385 – £1,150 | per arch |
| Rebuilding an arch (one side) | £865 – £1,250 | per opening |
| Rebuilding an arch (both sides) | £1,750 – £2,500 | per opening |
How we usually approach 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
Reinforcing a sound arch
Where the arch has only dropped slightly and the bricks are sound, stainless helical bars are bonded into the bed joints just above it, extending well into the wall on each side. The bars turn the courses above into a reinforced band of masonry, so the arch no longer has to carry the full load. Joints are repointed to match.
Best for: Slightly dropped or cracked arches with sound bricks
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.
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.
What to look for before calling about brick arch repairs
- Gaps opening between arch bricks at the top or bottom edge
- Mortar falling out of the arch joints after frosty weather
- A flat arch that has started to sag into a shallow curve
Rules for brick arch repairs in England
Like-for-like repairs such as crack stitching and repointing do not usually need building control approval in England, but anything that changes or strengthens the structure, such as underpinning or rebuilding a wall, does. If the work touches a party wall, the Party Wall etc. Act 1996 may apply.
Questions about brick arch repairs in St Helens
How much should I budget for brick arch repairs in St Helens?
Guide prices for brick arch repairs in St Helens start from about £385 per arch, including VAT, on North West 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 St Helens?
Yes. We take enquiries from across St Helens, including WA9, WA10, WA11, and from nearby places such as Prescot and Ashton-in-Makerfield. Send photos for a free initial view and we will tell you what happens next.
Why do houses in Merseyside crack?
Merseyside is mostly sandstone with glacial till on top, with soft coastal deposits in Sefton and the Lancashire coalfield extending under St Helens and parts of Knowsley. Old docks and industry left made ground in places. Only an investigation can say why a particular building has moved.
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.
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.
Related work in St Helens
- Roof structure repairs
- Gable end wall repairs
- Boundary and garden wall repairs
- Concrete repairs
- Floor joist repairs
Brick arch repairs near St Helens
Request a written, no-obligation price for arch repairs in St Helens; every arch is itemised, along with any work needed on the inside face.