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Wet Plaster vs Dry Lining — UK Comparison
Comparing wet plastering and dry lining (plasterboard) for UK internal walls — time, cost, finish quality, insulation options and when to use each method.
Side-by-Side Comparison
| Property | Wet Plaster | Dry Lining (Dot & Dab) |
|---|---|---|
| Method | Undercoat + skim direct to wall | Plasterboard adhesive-fixed + skim |
| Time per room | 2-3 days | 1-1.5 days |
| Cost per m² (installed) | £22-35 | £15-25 |
| Finish hardness | Hard, durable surface | Softer — dents with impact |
| Thickness added to wall | 13-16mm | 22-35mm (board + adhesive gap) |
| Room size reduction | Minimal | 25-40mm per wall |
| Hides uneven walls | Follows wall contour | Creates flat surface regardless |
| Insulation option | None | Insulated plasterboard available |
| Services (cables, pipes) | Must be chased into wall | Can run behind board |
| Drying before painting | 3-5 days | 2-4 days (skim only) |
UK Cost Comparison (2026 Prices)
For plastering a 4m x 5m room (approximately 36 m² of wall area, excluding windows/doors):
| Cost Element | Wet Plaster | Dry Lining |
|---|---|---|
| Materials | £100-150 (plaster bags) | £180-260 (boards, adhesive, skim) |
| Labour (2-3 vs 1-1.5 days) | £500-800 | £350-550 |
| Total | £600-950 | £530-810 |
When to Choose Each
Choose Wet Plaster When
- Walls are reasonably flat and sound
- Hard, durable finish required
- Room size must be maximised
- Period property (traditional method)
- Heavy items will be wall-mounted
Choose Dry Lining When
- Walls are very uneven or in poor condition
- Speed is important (half the time)
- Insulation is needed behind the lining
- Services need to run behind the wall
- New build or major renovation
Related Calculators
- Plaster Coverage Calculator — bags of plaster for wet plastering
- Dry Lining Calculator — plasterboard, adhesive and skim quantities
Next up: related pages
How We Calculate This
Frequently Asked Questions
Wet plastering applies gypsum plaster (undercoat + skim) directly to masonry walls — it is the traditional method. Dry lining fixes plasterboard to the wall (using dot and dab adhesive, battens or metal frames), then skims or tapes the joints. Dry lining is faster and can incorporate insulation behind the board.
Wet plaster gives a harder, more durable surface that resists knocks better. It also feels more solid when you tap the wall. However, dry lining is faster, can hide uneven walls, and makes it easy to add insulation or run services. For most modern UK construction, dry lining is standard; wet plaster is preferred for high-quality renovations.
Dry lining a typical room takes 1 day (board + skim). Wet plastering takes 2-3 days (undercoat, drying time, skim coat). Dry lining is about twice as fast, which translates to lower labour costs. However, drying time for both methods before painting is similar — 2-5 days depending on conditions.
Yes, but you need to use the right fixings. For light items (up to 5 kg), spring toggles or hollow wall anchors work. For heavy items (shelves, TVs, boilers), fix into the masonry behind using longer fixings that pass through the plasterboard and adhesive dabs. Alternatively, install nogging (timber blocks) behind the board at fixing points during installation.
Dot and dab is faster and cheaper — adhesive dabs are applied to the wall and the board is pressed on. However, it creates a void behind the board that can harbour damp. Battens (timber or metal) give a consistent void for insulation and services, and allow adjustment for very uneven walls. For external walls, battens with insulation is the better method.
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Last updated: April 2026
Verified against UK standards · estimates only, confirm with your supplier.