Working in metric (m, m², m³)
UK paint coverage is given per litre on the tin (typically 12–14 m² per litre on smooth previously-painted surfaces, 10 m²/L on textured, 6–8 m²/L on bare plaster). Two coats is the norm — divide your wall area by coverage rate, then double. Tubs come in 1L, 2.5L, 5L, and (trade) 10L sizes; the 5L bucket is the cheapest per-litre option for most jobs.
VAT and pricing conventions
Trade-counter prices (Dulux Decorator Centre, Crown Trade, Brewers, Johnstone's Trade Centre) are quoted ex-VAT and require a trade account but are 20–35% cheaper than retail B&Q/Wickes prices. Multiply by 1.20 to add 20% VAT for the actual cost. For homeowners without trade accounts, ask if any local independents offer "self-employed" or "DIY" trade pricing — many do for jobs over £100.
Regional variation across the UK
London and the South-East decorator labour is £220–£300/day (£500–£800/room). Yorkshire, the North-East, Wales, and Scotland sit at £180–£240/day (£300–£500/room). Northern Ireland is roughly mid-range. Material prices vary less by region (10–15%); the labour gap is much wider.
Common UK project sizes
| Project | Dimensions | Result |
|---|---|---|
| Bathroom (2 × 2.5 m × 2.4 m) | 21 m² wall | 2.5 L · £30–£70 paint · £250–£500 turnkey |
| Bedroom (3.5 × 4 m × 2.4 m) | 36 m² wall | 4 L · £55–£140 paint · £400–£800 turnkey |
| Living room (5 × 6 m × 2.7 m) | 59 m² wall | 6.5 L · £100–£260 paint · £600–£1,200 turnkey |
| 3-bed semi (interior, 100 m²) | ~280 m² wall | 32 L · £400–£1,100 paint · £3,500–£7,000 turnkey |
| 3-bed semi (exterior masonry) | ~140 m² masonry | 20 L · £350–£700 paint · £2,500–£5,000 turnkey |