Plastering Costs Per Room in Wales 2026
Plaster costs per room in Wales vary based on room size, preparation required, and type of plaster work.
Skim coat (over plasterboard or sound existing plaster):
| Room size | Typical cost (Wales, 2026) |
|---|---|
| Small bedroom (10 sq m walls) | £180–£320 |
| Standard bedroom (12 sq m walls) | £200–£380 |
| Large bedroom or lounge | £280–£500 |
| Ceiling (per ceiling) | £130–£280 |
Full replaster (hacking off and replastering):
| Room size | Typical cost (Wales, 2026) |
|---|---|
| Small bedroom | £400–£700 |
| Standard bedroom | £450–£800 |
| Large room | £600–£1,100 |
| 3-bed house (all rooms) | £2,500–£5,000 |
Plasterboard and skim (dry lining):
| Area | Typical cost (Wales, 2026) |
|---|---|
| Single room (plasterboard + skim) | £500–£1,200 |
| Per sq m (supplied and fixed) | £25–£45 |
What Affects Plastering Costs in Wales?
Preparation: Hacking off old plaster and preparing the substrate properly is essential but time-consuming. Welsh properties with lime plaster behind modern finishes need careful removal to avoid substrate damage.
Damp: Plastering over damp walls will fail. If there's evidence of damp, address the cause before plastering, plastering costs will be wasted otherwise.
Access: High ceilings (common in Victorian Cardiff and Swansea terraces) and difficult access increase cost.
Drying time in Wales: Welsh humidity means fresh plaster needs 4–8 weeks to fully dry before painting. Good plasterers will advise on this, rushing decoration over damp plaster causes peeling.