Brentwood · Essex
Brick arch repairs in Brentwood
If you live in a period home in Brentwood, 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£420per arch inc VAT

- Postcodes
- CM13, CM14, CM15
- Population
- about 53,000
- Area
- Essex
- Pricing region
- East of England
Is Essex prone to ground movement?
Postcode districts CM13, CM14, CM15 cover Brentwood, a Essex town of about 53,000 people. Neighbouring towns we cover: Billericay (5 miles), Havering (5 miles) and Basildon (7 miles).
Shrinkable clay is widespread in Essex. Ground movement here is more often linked to soils, drains and trees than to mining. Across Essex, most homes are Victorian terraces, 1930s semis and bungalows, and large post-war new-town estates in Basildon and Harlow.
Guide prices for brick arch repairs in Brentwood
These are guide prices for Brentwood, using East of England 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. | £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 |
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
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
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.
Strike the former and point
Once the mortar has cured enough, the former and props are removed. Joints are finished to match the surrounding wall, and any cracks running from the arch into the wall are repaired at the same visit.
Symptoms that point to brick arch repairs
- A vertical crack running up from the middle of the arch
- Mortar falling out of the arch joints after frosty weather
- Gaps opening between arch bricks at the top or bottom edge
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.
Frequently asked questions
How much will brick arch repairs cost in Brentwood?
Guide prices for brick arch repairs in Brentwood 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 cover Brentwood?
Yes, Brentwood is covered, along with postcode districts CM13, CM14, CM15. We also cover nearby Billericay and Havering.
Is the ground in Essex prone to subsidence?
London Clay covers much of south and central Essex and boulder clay much of the north, making it one of the counties most affected by clay shrinkage in dry summers. Street and garden trees close to houses add to the risk. Only an investigation can say why a particular building has moved.
Is a dropped brick arch dangerous?
A slightly dropped arch is not usually an immediate danger, but it is no longer carrying load as it should and tends to worsen. Loose bricks that could fall, or a fast-growing crack above, need prompt attention. Do not rely on the window frame to hold it.
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 Brentwood
- Bay window subsidence repairs
- Subsidence repairs
- Gable end wall repairs
- Boundary and garden wall repairs
- Wall tie replacement
Brick arch repairs near Brentwood
Once the brick and mortar match is agreed for your Brentwood arch, we put a fixed price in writing before any work is booked.