Edinburgh and the Lothians · Scotland
Bay window subsidence repairs in Edinburgh and the Lothians
If you live in Edinburgh and the Lothians and are looking at bay window subsidence repairs, the first question is why the wall moved. Shrinkable clay is less common in Edinburgh and the Lothians than in south-east England; parts of Edinburgh and the Lothians lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause.
Guide price from£570per bay inc VAT
- Area
- Edinburgh and the Lothians
- Pricing region
- Scotland
- Ground
- Mostly firmer ground
- Towns listed
- 12
What should you know about the ground under Edinburgh and the Lothians?
Edinburgh is volcanic and sedimentary rock with glacial till, while the Midlothian and East Lothian coalfields and oil-shale workings in West Lothian have left recorded mine workings and bings.
Parts of Edinburgh and the Lothians lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. What you mostly find across Edinburgh and the Lothians: sandstone tenements and Georgian terraces, miners' rows, bungalows and post-war estates.
Bay window subsidence repairs prices in Edinburgh and the Lothians
Prices in Edinburgh and the Lothians are worked out on Scotland 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 |
|---|---|---|
| Bay junction crack repair and tie-inest. | £570 – £1,700 | per bay |
| Traditional underpinning of a bay | £2,850 – £6,650 | per bay |
| Mini-piled bay underpinning | £4,750 – £11,400 | per bay |
How we usually approach bay window subsidence repairs
Junction crack repair and tie-in
Where movement has stopped, the open joint between bay and house is raked out, stainless ties or helical bars are fixed across it, and the joint is repointed to match. Internal plaster along the crack is cut back and renewed before redecoration.
Best for: Old, stable cracks where the bay is no longer moving
Mini-piled bay underpinning
Small piles are installed to depth around or beneath the bay and linked by a reinforced beam or needles that pick up its weight. It suits deeper soft ground and heavy root activity, and the compact rigs fit into a front garden.
Best for: Deep clay, nearby trees, or poor ground below the bay
Traditional underpinning of the bay
The bay footing is excavated in short sections and new mass concrete is placed down to firmer ground below the zone affected by roots and seasons. Because a bay is a short length of wall, the work is compact, but it needs building control approval.
Best for: Active bay movement on firm ground at moderate depth
What happens during bay window subsidence repairs, step by step?
Agree the repair
The engineer decides between tie-in repairs and underpinning. We confirm a fixed price in writing once the repair is specified, including scaffolding if needed, the bay window, roof flashing and internal making good.
Carry out the work
Ties are fitted across the junction, or the bay is underpinned in sequence with building control inspecting the dig. The bay window and flashings are checked and eased or resealed where the movement has disturbed them.
Make good inside
Plaster around the bay and along the junction is renewed, the window board is refixed and the room is ready for decoration. Building control paperwork, where it applies, is passed to you for your records.
What to look for before calling about bay window subsidence repairs
- Cracks above the bay window head or below the sill
- Bay roof or lead flashing pulling away from the main wall
- A vertical crack where the bay meets the front wall
- A step or slope in the bay floor towards the window
Do you need approval for bay window subsidence repairs in Scotland?
In Scotland, underpinning and other structural alterations generally need a building warrant from the council’s building standards service before work starts, and a completion certificate at the end; small like-for-like repairs often do not. There is no Party Wall Act in Scotland; shared walls are covered by title deeds and, for flats, the Tenements (Scotland) Act 2004.
Find bay window subsidence repairs in your Edinburgh and the Lothians town
- Edinburgh
- Livingston
- Musselburgh
- Bathgate
- Bonnyrigg
- Penicuik
- Broxburn
- Mayfield
- Linlithgow
- Armadale
- Tranent
- Dunbar
Questions about bay window subsidence repairs in Edinburgh and the Lothians
Why do houses in Edinburgh and the Lothians crack?
Edinburgh is volcanic and sedimentary rock with glacial till, while the Midlothian and East Lothian coalfields and oil-shale workings in West Lothian have left recorded mine workings and bings. Parts of Edinburgh and the Lothians lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Only an investigation on site can say why a particular building has moved.
How much will bay window subsidence repairs cost in Edinburgh and the Lothians?
On Scotland rates, bay window subsidence repairs starts from about £570 per bay, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
Can I just fill the crack myself?
Filling it hides the evidence without dealing with the cause, and if the bay is still moving the crack will reopen. Photograph it with a scale and date first. If you plan to claim on insurance, tell your insurer before any repair, including filling.
How long does bay underpinning take?
Traditional underpinning of a bay usually takes about a week on site, and mini-piling a little longer depending on depth. A junction tie-in without underpinning normally takes one to two days. Approvals and any monitoring beforehand add to the overall timeline.
Will the bay window need replacing?
Usually not. Most windows can be eased, packed or resealed once the bay is stable. If the frame has twisted badly or the glass has cracked, replacement may be worth considering. Under a claim, upgrades beyond like-for-like are normally priced separately.