Brick arch repairs in Dorchester

Postcodes: DT1
Population: about 17,000
Area: Dorset
Pricing region: South West

What should you know about the ground under Dorchester?

With roughly 17,000 people, Dorchester spans postcode districts DT1 in Dorset. Nearby places we cover include Weymouth (7 miles), Yeovil (18 miles) and Poole (20 miles).

Parts of Dorset have clay that can shrink near trees in dry spells. Ground movement here is more often linked to soils, drains and trees than to mining. Across Dorset, most homes are stone and brick villages, Victorian villas in Bournemouth, and inter-war and post-war semis.

Symptoms that point to brick arch repairs

A flat arch that has started to sag into a shallow curve
Cracks stepping out from the arch ends into the wall
Mortar falling out of the arch joints after frosty weather

Guide prices for brick arch repairs in Dorchester

Guide prices below are for homes in Dorchester, on South West rates and including VAT. A survey or good photos let us turn them into a fixed written price.

Guide prices inc VAT on South West rates. Items marked est. are our estimates.
Item	Guide price	Per
Stitching and reinforcing a sound archest.	£410 – £1,250	per arch
Rebuilding an arch (one side)	£925 – £1,350	per opening
Rebuilding an arch (both sides)	£1,850 – £2,700	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.
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.

Frequently asked questions

How much will brick arch repairs cost in Dorchester?

Guide prices for brick arch repairs in Dorchester start from about £410 per arch, including VAT, on South West rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.

Do you cover Dorchester?

We do. Dorchester and the surrounding area are covered, including nearby Weymouth and Yeovil. A free initial assessment from your photos is the first step.

Is the ground in Dorset prone to subsidence?

Dorset mixes chalk downs, Oxford and Kimmeridge Clays in the vales, and the sands and gravels of the Poole basin. Clay vales can shrink and swell, and parts of the coast are known for landslip. 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.

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.

Other structural repairs in Dorchester

Brick arch repairs near Dorchester

Request a written, no-obligation price for arch repairs in Dorchester; every arch is itemised, along with any work needed on the inside face.