Letchworth Garden City · Hertfordshire
Brick arch repairs in Letchworth Garden City
Before repairing a brick arch at a Letchworth Garden City property, we check what sits behind it. A rotting timber lintel on the inner face is a frequent hidden cause, and fixing only the visible arch would leave the real problem in place.
Guide price from£420per arch inc VAT

- Postcodes
- SG5, SG6, SG15
- Population
- about 34,000
- Area
- Hertfordshire
- Pricing region
- East of England
How do local ground conditions affect brick arch repairs in Letchworth Garden City?
Letchworth Garden City (SG5, SG6, SG15) has around 34,000 residents and sits in Hertfordshire. Nearby places we cover include Hitchin (3 miles), Stevenage (5 miles) and Biggleswade (8 miles).
Shrinkable clay is widespread in Hertfordshire. Ground movement here is more often linked to soils, drains and trees than to mining. Typical buildings in Hertfordshire: Garden-city houses in Letchworth and Welwyn, 1930s semis, Victorian terraces and post-war new-town estates.
Signs you may need brick arch repairs
- Mortar falling out of the arch joints after frosty weather
- A flat arch that has started to sag into a shallow curve
- Gaps opening between arch bricks at the top or bottom edge
How much will brick arch repairs cost in Letchworth Garden City?
Prices in Letchworth Garden City 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 |
|---|---|---|
| Stitching and reinforcing a sound archest. | £420 – £1,250 | per arch |
| Rebuilding an arch (one side) | £945 – £1,350 | per opening |
| Rebuilding an arch (both sides) | £1,900 – £2,750 | per opening |
Which repair method suits a home in Letchworth Garden City?
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 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
What happens when we carry out brick arch repairs in Letchworth Garden City?
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.
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.
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.
Brick arch repairs in Letchworth Garden City: questions and answers
What is the price of brick arch repairs in Letchworth Garden City?
Guide prices for brick arch repairs in Letchworth Garden City start from about £420 per arch, 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 brick arch repairs in Letchworth Garden City?
We do. Letchworth Garden City and the surrounding area are covered, including nearby Hitchin and Stevenage. A free initial assessment from your photos is the first step.
Does the ground around Letchworth Garden City 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.
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.
Do flat brick arches need a lintel?
Many flat soldier arches were built with a hidden steel bar or timber behind, because they have little true arch action. When repairing one, we check what is supporting it and, where needed, reinforce it with bars or add suitable support behind.
More repairs we carry out in Letchworth Garden City
- Extension pulling away repairs
- Boundary and garden wall repairs
- Gable end wall repairs
- Lintel replacement
- Floor joist repairs
Brick arch repairs near Letchworth Garden City
Our guide-price tool covers arch reinforcement and rebuilds in Letchworth Garden City; add a photo and we can say which applies to yours.