Llanelli · Dyfed
Extension pulling away repairs in Llanelli
An extension pulling away from a Llanelli house is often a drain problem, a shallow footing or a missing tie-in, rather than a failing building. Finding out which applies decides whether the fix is a junction repair or new foundations.
Guide price from£550per junction inc VAT
- Postcodes
- SA15
- Population
- about 50,000
- Area
- Dyfed
- Pricing region
- Wales
Why does the ground in Dyfed matter for extension pulling away repairs?
We cover Llanelli and its postcode districts SA15, part of Dyfed, with a population of roughly 50,000. We also take enquiries from nearby Gorseinon (5 miles), Swansea (10 miles) and Ammanford (11 miles).
Most of Dyfed is on firmer ground than the clay belts of the south-east. Parts of Dyfed lie on a former coalfield, so a coal mining search is worth checking if movement has no obvious cause. Across Dyfed, most homes are stone cottages, Victorian terraces in Llanelli and Carmarthen, and post-war estates.
What to look for before calling about extension pulling away repairs
- Mastic or render at the joint repeatedly splitting open
- A vertical crack or gap where the extension meets the house
- Floor level dropping where the extension and house floors meet
Extension pulling away repairs prices in Llanelli
Guide prices below are for homes in Llanelli, on Wales 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. | £550 – £1,850 | per junction |
| Movement joint and making goodest. | £370 – £1,100 | per junction |
| Underpinning the extension where needed | £920 – £2,300 | per metre of wall |
How we usually approach extension pulling away repairs
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
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 during extension pulling away repairs, step by step?
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.
Repair the junction
Drains are repaired first if they are leaking. The joint is then tied, formed as a movement joint or rebuilt after underpinning, with roof flashings reset so the junction stays watertight. Building control is handled where needed.
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.
Rules for extension pulling away repairs in Wales
In Wales, the Welsh version of the Building Regulations applies. Underpinning and other work that alters or strengthens the structure needs building control approval and inspection; like-for-like repairs often do not. The Party Wall etc. Act 1996 applies to work on party walls and excavation close to a neighbour’s foundations.
Questions about extension pulling away repairs in Llanelli
What is the price of extension pulling away repairs in Llanelli?
Guide prices for extension pulling away repairs in Llanelli start from about £550 per junction, including VAT, on Wales rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Do you carry out extension pulling away repairs in Llanelli?
Yes, Llanelli is covered, along with postcode districts SA15. We also cover nearby Gorseinon and Swansea.
Does the ground around Llanelli cause cracking?
The western edge of the South Wales coalfield lies beneath Llanelli, Ammanford and parts of Pembrokeshire, while the rest of the area is older hard rock with glacial deposits in the valleys. Only an investigation can say why a particular building has moved.
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.
Will my extension need underpinning?
Often not. Many separating extensions are fixed by repairing a drain, tying the junction or forming a movement joint. Underpinning is for extensions that keep dropping because their footings are too shallow or the ground beneath is poor, as shown by monitoring.
More repairs we carry out in Llanelli
- Brick arch repairs
- Bowing wall repairs
- Subsidence repairs
- Bay window subsidence repairs
- Concrete repairs
Extension pulling away repairs near Llanelli
Photos of the crack, the internal corner and the roof flashing are a good start; send them about your Llanelli home and we will reply with a view.