Cost of Plastering a Room in the UK (2025)
Plastering a single room costs £300–£900 depending on whether it is a skim coat or full replaster. Whole-house replastering runs £4,000–£12,000.
Skim coat vs full replaster — what do you need?
A skim coat applies a thin finishing layer of plaster over existing walls that are in reasonable condition. It is quicker and cheaper than a full replaster. A full replaster strips back to the brick or block and builds up in layers — necessary where there is significant damage, damp repairs, or very old plaster that is failing. Your plasterer will assess which is needed when they visit.
How long does plastering take to dry?
Fresh plaster takes 4–6 weeks to fully dry before painting. In summer or well-ventilated rooms it can be quicker. Do not apply normal emulsion too early — use a mist coat (3 parts water, 1 part emulsion) once the plaster turns a uniform pale colour, then wait 2–3 weeks before top coats.
External rendering costs
Rendering the outside of a house is charged per square metre and is significantly more expensive than internal plastering. A semi-detached house typically has 80–120m² of external wall and costs £2,500–£5,000 for monocouche or two-coat render. Specialist finishes (silicone render, K-rend) cost more but last longer and need less maintenance.
Cost Breakdown
All prices are indicative UK averages for 2025. Actual costs vary by location, specification, and contractor. London and South East rates are typically 20–35% higher.
| Item | Low | High |
|---|---|---|
| Skim coat (average room) | £250 | £450 |
| Full replaster (average room) | £500 | £900 |
| Ceiling only (average room) | £150 | £300 |
| Whole house skim (3-bed) | £3,000 | £6,000 |
| Whole house replaster (3-bed) | £6,000 | £12,000 |
| External rendering (semi) | £2,500 | £5,000 |
What Affects the Cost?
- ✓Whether it is a skim or full replaster
- ✓Room size and ceiling height
- ✓Condition of existing plaster — blown or damp areas add cost
- ✓Number of windows, doors, and reveals
- ✓Access — high ceilings require extra time and equipment
- ✓Coving or decorative features to work around
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Post a Job — It's FreeFrequently Asked Questions
How do I know if plaster has blown?
Tap the wall — blown plaster sounds hollow rather than solid. It may also show cracking in a pattern resembling crazy paving, or feel soft and crumbly. Your plasterer will assess during a visit.
Can I paint straight onto new plaster?
No — you must apply a mist coat first (emulsion heavily diluted with water). This seals the plaster and prevents normal paint from flaking. Wait until plaster turns a uniform pale pink before applying.
Do I need to move furniture before a plasterer comes?
Yes — clear the room as completely as possible. Plastering creates significant dust and debris. Cover any items that cannot be removed with dust sheets.
How long after plastering can I tile?
New plaster should be fully dry before tiling — typically 4–6 weeks. Tiling onto wet plaster causes adhesive failure and the tiles will fall off. Your tiler will check moisture levels before starting.