Mountain Ash · Mid Glamorgan
Structural surveys and crack monitoring in Mountain Ash
For homeowners in Mountain Ash unsure whether a crack is getting worse, the honest answer often needs measurement rather than a single look. Tell-tales and level points turn the question into clear figures the engineer can interpret.
Guide price from£460per property inc VAT

- Postcodes
- CF45
- Population
- about 11,000
- Area
- Mid Glamorgan
- Pricing region
- Wales
Is Mid Glamorgan prone to ground movement?
With roughly 11,000 people, Mountain Ash spans postcode districts CF45 in Mid Glamorgan. We also take enquiries from nearby Rhondda (3 miles), Aberdare (4 miles) and Merthyr Tydfil (4 miles).
Mid Glamorgan has a mix of ground, with clay in some places and firmer rock in others. Historic coal workings are recorded beneath parts of Mid Glamorgan, and a coal mining search is worth checking where movement is unexplained. What you mostly find across Mid Glamorgan: long stone and brick terraces on valley sides, Victorian houses in Bridgend and post-war estates.
Guide prices for structural surveys and crack monitoring in Mountain Ash
The ranges below reflect typical Wales costs for structural surveys and crack monitoring, including VAT. Scaffold, access and making good can push a job to the top of the range.
| Item | Guide price | Per |
|---|---|---|
| Structural engineer's inspection and report | £460 – £1,850 | per property |
| Crack monitoring: installation and three seasonal readings | £1,350 – £2,200 | per programme |
| Extra monitoring visit | £385 | per visit |
Methods for structural surveys and crack monitoring
Level monitoring
Survey points are fixed around the building and their heights measured against a stable datum on each visit. This shows whether one part of the house is dropping or rising compared with the rest, which crack widths alone cannot reveal.
Best for: Suspected subsidence or heave across a whole house
Engineer’s structural inspection and report
A chartered structural engineer visits, records the cracks, checks the walls, floors, drains and nearby trees, and writes a report on the likely cause and next steps. It may recommend monitoring, investigations such as trial pits, or a repair specification.
Best for: A first expert opinion on any significant cracking
From first photo to finished repair
Free initial assessment
Send photos of the cracks with something for scale and tell us when they appeared. We give a free view on whether an engineer’s inspection is worthwhile, and whether your insurer should be told first.
Install monitoring points
Tell-tales, measuring studs or level points are fixed at the locations the engineer chooses. A base reading is taken on the first visit, so every later reading can be compared against it.
Repair or close
If the readings show the house is stable, the engineer specifies the repair and we confirm a fixed price in writing. If movement continues, the cause is investigated further before a foundation repair is designed.
Symptoms that point to structural surveys and crack monitoring
- A mortgage valuation recommending a structural engineer’s report
- Cracks that seem wider after a hot, dry summer
- Cracks reopening after being filled and decorated
Rules for structural surveys and crack monitoring in Wales
In Wales, small like-for-like repairs do not usually need approval, but work that alters or strengthens the structure needs building control under the Welsh Building Regulations, and the Party Wall etc. Act 1996 can apply to shared walls.
Frequently asked questions
How much should I budget for structural surveys and crack monitoring in Mountain Ash?
Guide prices for structural surveys and crack monitoring in Mountain Ash start from about £460 per property, 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 Mountain Ash?
Yes, Mountain Ash is covered, along with postcode districts CF45. We also cover nearby Rhondda and Aberdare.
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.
What is a tell-tale on a crack?
A tell-tale is a small gauge fixed across a crack, with two overlapping plates marked in millimetres. As the crack opens, closes or shears, the plates move against each other and the reading changes. It gives a simple, repeatable record that anyone can check between visits.
What happens after the monitoring ends?
If the readings show the building is stable, the engineer specifies a repair, usually crack stitching and making good. If movement continues, further investigation and a foundation repair design follow. Either way, we confirm a fixed price in writing once the repair is specified.
Related work in Mountain Ash
Structural surveys and crack monitoring near Mountain Ash
For a no-obligation written quote on crack monitoring in Mountain Ash, send photos and a note of when the cracks appeared and how they have changed.