Milton Keynes · Buckinghamshire
Brick arch repairs in Milton Keynes
A dropped keystone over a front door is a familiar sight on older streets, in Milton Keynes and beyond, and it rarely fixes itself. We look at whether the arch bricks are sound and whether the wall either side has moved, then recommend the lighter repair where it will work.
Guide price from£450per arch inc VAT

- Postcodes
- MK6, MK9, MK14
- Population
- about 260,000
- Area
- Buckinghamshire
- Pricing region
- South East
Is Buckinghamshire prone to ground movement?
With roughly 260,000 people, Milton Keynes spans postcode districts MK6, MK9, MK14 in Buckinghamshire. Nearby places we cover include Newport Pagnell (3 miles), Bletchley (3 miles) and Leighton Buzzard (10 miles).
Buckinghamshire is one of the parts of the UK where clay soils are most likely to move with the seasons. Ground movement here is more often linked to soils, drains and trees than to mining. What you mostly find across Buckinghamshire: market-town terraces, 1930s semis in the south, and large late-20th-century estates in Milton Keynes and Aylesbury.
Symptoms that point to brick arch repairs
- Mortar falling out of the arch joints after frosty weather
- Gaps opening between arch bricks at the top or bottom edge
- The centre bricks of an arch sitting lower than the rest
Guide prices for brick arch repairs in Milton Keynes
These are guide prices for Milton Keynes, using South East 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. | £450 – £1,350 | per arch |
| Rebuilding an arch (one side) | £1,000 – £1,450 | per opening |
| Rebuilding an arch (both sides) | £2,000 – £2,900 | per opening |
Methods for brick arch repairs
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
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.
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
What is the price of brick arch repairs in Milton Keynes?
Guide prices for brick arch repairs in Milton Keynes start from about £450 per arch, including VAT, on South East 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 Milton Keynes?
Yes, Milton Keynes is covered, along with postcode districts MK6, MK9, MK14. We also cover nearby Newport Pagnell and Bletchley.
Does the ground around Milton Keynes cause cracking?
The Chilterns are chalk with clay-with-flints on the tops, while the Vale of Aylesbury and Milton Keynes sit on Gault, Kimmeridge and Oxford Clays and glacial till. The vale clays are prone to seasonal shrinkage near trees. 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.
More repairs we carry out in Milton Keynes
- Subsidence insurance claim repairs
- Subsidence repairs
- Gable end wall repairs
- Underpinning
- Structural crack repairs
Brick arch repairs near Milton Keynes
Request a written, no-obligation price for arch repairs in Milton Keynes; every arch is itemised, along with any work needed on the inside face.