Plastering is a core trade in any renovation or building project. Whether you are re-skimming a room after damp treatment, full plastering after a loft conversion, or boarding and skimming an extension, understanding what plastering costs in London helps you budget and compare quotes accurately.
Types of Plaster Finish
Skim coat (finishing plaster): A thin 2–3mm finishing coat applied over existing plaster or plasterboard to create a smooth, paint-ready surface. The most common type of plastering in renovation works.
Two-coat plaster (browning and finish): A backing coat of browning plaster followed by a finish skim. Used where existing plaster has been removed down to brick or blockwork.
Dry lining (plasterboard and skim): Plasterboard is fixed to walls or ceilings with dot-and-dab adhesive or a timber/metal stud framework, then skimmed. Used in new build, extension, and loft conversion work.
Render: External or internal sand-cement render coat, often followed by a smooth finish coat. Used in renovation and repair work.
London Plastering Cost Guide (Per Room)
Costs vary by room size, height, and existing surface condition. Typical London rates for a standard 3m × 4m room:
| Scope | Typical Cost (London) |
|---|---|
| Skim coat — walls only, single room | £350–£700 |
| Skim coat — walls and ceiling, single room | £500–£900 |
| Full two-coat plaster — walls and ceiling | £700–£1,400 |
| Dry line and skim — walls and ceiling | £800–£1,600 |
Per-Square-Metre Rates
Many plasterers quote per square metre for larger projects:
- Skim coat: £10–£18/m²
- Two-coat plaster: £18–£30/m²
- Dry lining and skim: £20–£35/m²
London rates typically sit 15–30% higher than the UK national average.
What Affects the Cost?
- Ceiling height: Higher ceilings require additional staging and more material — costs increase.
- Surface condition: Poor existing plaster, mould remediation, or uneven walls increase preparation time.
- Access: Difficult access (narrow stairs, first floor and above) increases time and cost.
- Specification: Fine finish plaster or heritage lime plaster commands a premium over standard finishing plaster.
rcbGroup
rcbGroup includes plastering in all extension, loft conversion, and refurbishment packages — managed as part of the full construction programme rather than as a separate appointment.