Lanarkshire · Scotland
Extension pulling away repairs in Lanarkshire
Extension pulling away repairs in Lanarkshire starts with the ground. Clay shrinkage is less of a concern in Lanarkshire, so other causes such as drains, poor footings or older walls are checked first, and the buildings here are mostly miners' rows, so the repair has to suit both.
Guide price from£570per junction inc VAT
- Area
- Lanarkshire
- Pricing region
- Scotland
- Ground
- Mostly firmer ground
- Towns listed
- 12
Is Lanarkshire prone to ground movement?
Lanarkshire lies on the Central Coalfield, mined intensively in the past around Hamilton, Motherwell, Airdrie and Coatbridge, so recorded workings are common beneath towns.
Historic coal workings are recorded beneath parts of Lanarkshire, and a coal mining search is worth checking where movement is unexplained. Housing stock in Lanarkshire: Miners' rows, sandstone tenements, inter-war council houses and new-town estates in East Kilbride and Cumbernauld.
Which repair method suits a home in Lanarkshire?
Junction crack repair with stainless ties
The open joint is cut out, stainless ties or helical bars are fixed across it into both the old and new masonry, and the joint is repointed or rendered to match. Inside, the corner is replastered. This suits extensions that moved once and have since stopped.
Best for: Settled extensions with a stable gap at the junction
Movement joint and making good
Where some seasonal movement is expected to continue, the junction is formed into a proper flexible movement joint with a compressible filler and sealant, so the two parts can move without cracking. Flashings and internal finishes are detailed to suit.
Best for: Minor ongoing movement that does not threaten the structure
Underpinning the extension
If the extension is still dropping because its footings are too shallow or on poor ground, they are taken deeper by mass concrete, beam-and-base or mini-piles. The engineer designs the scheme, and the junction is repaired once the new foundation is in.
Best for: Active movement from shallow footings, roots or soft ground
What happens when we carry out extension pulling away repairs in Lanarkshire?
Show us the junction
Send photos of the crack outside, the internal corner and any flashing above, with a measure for scale. We give a free initial assessment and an initial view on whether the gap is likely old or still opening.
Find what is moving
An independent chartered structural engineer can inspect, and we can arrange one. A drain survey under the extension, a trial pit at its footing and tell-tale monitoring across the joint are common checks before choosing the repair.
Finish and hand over
Internal corners are replastered, skirtings and coving refixed, and doors or windows in the extension eased where the movement affected them. Records of the repair and any approvals are passed to you.
Signs you may need extension pulling away repairs
- Patio doors or windows in the extension starting to bind
- A vertical crack or gap where the extension meets the house
- Floor level dropping where the extension and house floors meet
- Daylight or draughts showing through the internal corner joint
How much will extension pulling away repairs cost in Lanarkshire?
Guide prices below are for homes in Lanarkshire, on Scotland rates and including VAT. A survey or good photos let us turn them into a fixed written price.
| Item | Guide price | Per |
|---|---|---|
| Junction crack repair with stainless tiesest. | £570 – £1,900 | per junction |
| Movement joint and making goodest. | £380 – £1,150 | per junction |
| Underpinning the extension where needed | £950 – £2,400 | per metre of wall |
Do you need approval for extension pulling away 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.
Towns in Lanarkshire we cover for extension pulling away repairs
- East Kilbride
- Hamilton
- Cumbernauld
- Coatbridge
- Motherwell
- Rutherglen
- Cambuslang
- Wishaw
- Bellshill
- Blantyre
- Larkhall
- Carluke
Extension pulling away repairs in Lanarkshire: questions and answers
Is the ground in Lanarkshire prone to subsidence?
Lanarkshire lies on the Central Coalfield, mined intensively in the past around Hamilton, Motherwell, Airdrie and Coatbridge, so recorded workings are common beneath towns. Historic coal workings are recorded beneath parts of Lanarkshire, and a coal mining search is worth checking where movement is unexplained. Only an investigation on site can say why a particular building has moved.
How much will extension pulling away repairs cost in Lanarkshire?
On Scotland rates, extension pulling away repairs starts from about £570 per junction, including VAT. The written price depends on the extent of the damage, access and whether an engineer or building control is needed.
Can a drain under my extension cause it to move?
Yes, a cracked or displaced drain beneath or beside an extension can soften clay or wash away fine soil. A CCTV drain survey usually finds it. Repairing the drain is often the first and most important step before any repair to the walls.
Is it normal for an extension to crack at the join?
A fine crack at the junction is fairly common, especially in the first few years as a new extension settles. It becomes a concern when the gap is widening, tapering, letting in water or matched by sticking doors and sloping floors. Those signs point to continuing movement.
Why is my extension pulling away from my house?
Usually because the extension and the house sit on different foundations that react differently to the ground. Shallow extension footings, leaking drains under the extension, nearby roots and weak tie-ins between old and new walls are the common causes.