Caerphilly · Mid Glamorgan
Mining subsidence repairs in Caerphilly
Parts of Mid Glamorgan have a history of coal, salt, metal or stone extraction, and some do not. For a property in Caerphilly, the first step is checking the records and the damage pattern before assuming any particular cause or claims route.
Guide price from£75per metre of crack inc VAT
- Postcodes
- CF83
- Population
- about 31,000
- Area
- Mid Glamorgan
- Pricing region
- Wales
Is Mid Glamorgan prone to ground movement?
Postcode districts CF83 cover Caerphilly, a Mid Glamorgan town of about 31,000 people. Nearby places we cover include Risca (6 miles), Pontypridd (6 miles) and Nelson (6 miles).
Parts of Mid Glamorgan have clay that can shrink near trees in dry spells. Historic coal workings are recorded beneath parts of Mid Glamorgan, and a coal mining search is worth checking where movement is unexplained. Across Mid Glamorgan, most homes are long stone and brick terraces on valley sides, Victorian houses in Bridgend and post-war estates.
What should you budget for mining subsidence repairs in Caerphilly?
These are guide prices for Caerphilly, using Wales rates and including VAT. Your written quote follows photos or a survey, and is fixed once the repair is specified.
| Item | Guide price | Per |
|---|---|---|
| Crack stitching and making good | £75 – £165 | per metre of crack |
| Re-levelling or ground stabilisation by resin injection | £735 – £1,400 | per metre of wall |
| Underpinning where the engineer specifies it | £920 – £3,200 | per metre of wall |
| Repair schedule for a claim (pricing an engineer's scope)est. | Free to request | — |
Repair options we may recommend
Crack stitching and making good
Where the ground has stopped moving and the damage is cracking, the walls are stitched with stainless helical bars, repointed and replastered. This covers a large share of mining damage, especially legacy movement that settled years ago and left cracks behind.
Best for: Cracking after movement that has now stopped
Ground stabilisation by resin injection
For localised settlement in the upper soil layers, expanding resin can be injected beneath the footings to firm the ground and sometimes reduce a small tilt. It is not suitable for large voids deep below, which need grouting or other specialist treatment first.
Best for: Shallow settlement once deeper voids are ruled out or treated
What to expect when we carry out mining subsidence repairs
Check the mining record
A coal mining report or a search of mining records shows whether recorded workings or shafts lie near the property. Records are incomplete, so a clear report does not rule mining out, and a recorded seam nearby does not prove it is the cause.
Engineer’s assessment
An independent chartered structural engineer inspects the damage and, if needed, recommends drilling or ground investigation to locate voids. We can arrange the engineer. Their report sets out the cause, whether movement has stopped and what repair is needed.
Repairs and records
Work proceeds once any ground treatment is complete and the engineer is satisfied. We stitch, stabilise or underpin as specified, make good inside and out, deal with building control where needed, and hand over records for your file.
Is it time for mining subsidence repairs? Common signs
- A dip, hollow or hole opening in the garden or drive
- Steps or ridges forming in paths, kerbs or garden walls
- Cracks running through the foundations and up both faces of a wall
Rules for mining subsidence 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.
Your mining subsidence repairs questions
How much should I budget for mining subsidence repairs in Caerphilly?
Guide prices for mining subsidence repairs in Caerphilly start from about £75 per metre of crack, including VAT, on Wales rates. Your fixed written price follows photos or a survey and depends on the extent of the work and access.
Can you survey a property in Caerphilly?
Yes. We take enquiries from across Caerphilly, including CF83, and from nearby places such as Risca and Pontypridd. Send photos for a free initial view and we will tell you what happens next.
Why do houses in Mid Glamorgan crack?
Mid Glamorgan lies on the South Wales coalfield, with dense historic workings, spoil tips and steep valley sides. Landslip, retaining walls and mining legacy are all live issues in the valleys. Only an investigation can say why a particular building has moved.
Who pays for coal-mining subsidence damage?
Liability for damage from past coal mining usually rests with the Mining Remediation Authority, or with the operator of a working mine. They investigate whether coal mining caused the damage before agreeing any repair. Tell your home insurer as well, because policy cover and the mining claim can overlap.
What should I do if a hole opens in my garden?
Keep everyone away from it and do not try to fill it yourself. Report it straight away to the Mining Remediation Authority if coal mining may be involved, or to your council and insurer otherwise. Old shafts can be deeper and wider than the visible hole suggests.
Related work in Caerphilly
Mining subsidence repairs near Caerphilly
For a no-obligation written quote on mining damage repairs in Caerphilly, call or send photos of the cracks and any mining report you have.