If your home's exterior walls are looking tired, cracked, or damp-stained, an exterior wall coating could be the most cost-effective way to transform and protect your property. But how much should you actually pay in 2026? Prices vary wildly — from a simple masonry paint refresh at £500 to a full textured wall coating system exceeding £5,000 for a detached house. This guide breaks down every cost so you can budget with confidence. Updated April 2026 with Checkatrade verified data.
What is an exterior wall coating?
An exterior wall coating is a thick, weather-resistant finish applied to outside walls. Unlike standard masonry paint, which sits on the surface and lasts 5-8 years, a proper wall coating bonds to the substrate and provides 15-25 years of protection against rain, frost, and UV damage. The UK's damp climate makes this a particularly worthwhile investment — penetrating moisture is the single biggest cause of exterior wall deterioration, and a quality weatherproof coating stops it at the surface.
There are three main categories: masonry paint (the most affordable), textured coatings (mid-range, with a thicker build that fills hairline cracks), and polymer-based weatherproof systems (premium, with guarantees of 20+ years). Each has different cost implications, and the right choice depends on your wall condition, property type, and how long you plan to stay in the home.
Exterior wall coating costs per m² in 2026
The table below shows average UK prices for 2026, including materials, labour, and standard preparation. Figures are based on Checkatrade data and trade supplier pricing as of April 2026.
| Coating Type | Cost per m² (Installed) | Lifespan | Best For |
|---|---|---|---|
| Masonry paint (2 coats) | £8 - £18 | 5-8 years | Budget refresh, good walls |
| Textured masonry coating | £25 - £45 | 10-15 years | Hairline cracks, pebble dash |
| Weatherproof wall coating | £40 - £70 | 15-25 years | Exposed walls, damp areas |
| Premium polymer system | £55 - £90 | 20-30 years | Long-term investment, resale |
| Elastomeric coating | £50 - £80 | 15-20 years | Cracked render, movement |
Total project costs by property type
Your total spend depends on the size of your property and the coating system you choose. These figures include scaffolding (typically £400-£1,000 for a standard two-storey house), surface preparation, and two coats of the chosen system. According to Checkatrade, the average UK homeowner spends between £2,000 and £4,500 on a full exterior wall coating project in 2026.
| Property Type | Wall Area (approx.) | Masonry Paint | Weatherproof Coating |
|---|---|---|---|
| Mid-terrace (2-bed) | 30-50 m² | £500 - £1,200 | £1,500 - £3,000 |
| Semi-detached (3-bed) | 80-120 m² | £1,000 - £2,500 | £3,200 - £5,500 |
| Detached (4-bed) | 150-250 m² | £2,000 - £4,500 | £5,000 - £10,000+ |
| Bungalow (2-bed) | 50-80 m² | £600 - £1,500 | £2,000 - £4,000 |
Regional pricing note
Labour rates vary significantly across the UK. Painters and decorators in London and the South East charge £200-£300 per day, whilst rates in the Midlands, North of England, Wales, and Scotland sit between £150-£210 per day. Always get at least three quotes via Checkatrade or the Painting and Decorating Association (PDA) to ensure a fair price for your area.
Top UK brands compared: Dulux, Sandtex, and Crown
The brand of masonry paint or coating you choose affects both initial cost and long-term value. Here are the three most widely used brands in the UK, with 2026 trade pricing:
Dulux Trade Weathershield remains the industry standard for exterior masonry. The Smooth Masonry range offers a 15-year weather protection guarantee and covers approximately 15 m² per litre. A 10-litre tin costs around £55-£65 at trade merchants like Brewers or Dulux Decorator Centres. For maximum durability, the Weathershield Textured Masonry finish provides a thicker build that fills minor surface imperfections and costs around £60-£70 per 10 litres.
Sandtex Trade High Cover Smooth is the preferred choice of many professional painters and decorators for its excellent coverage and workability. It covers up to 16 m² per litre — marginally better than Dulux — and retails at approximately £50-£60 per 10 litres. Sandtex also offers the 365 range, a premium all-weather product with enhanced flexibility that costs around £65-£75 per 10 litres. Both products carry a long-term weather protection guarantee.
Crown Trade Clean Extreme is the newer challenger in the exterior masonry market. Its self-cleaning technology uses hydrophobic particles to repel dirt and water, keeping facades looking fresh for longer. At around £50-£60 per 10 litres, it offers good value for money. Crown's Fastflow Smooth Masonry is the budget option at roughly £30-£40 per 10 litres, suitable for sheltered walls in good condition.
What affects the cost of exterior wall coating?
Several factors push your project cost up or down. Understanding these will help you budget realistically and avoid unpleasant surprises mid-project:
- Wall condition: Cracked, flaking, or previously painted walls need more preparation. Removing loose render or old coatings adds £10-£20 per m² to the total cost. Walls with damp issues must be treated before any coating is applied — a damp-proof course repair costs £500-£2,000 depending on severity.
- Access and scaffolding: A bungalow can often be coated from ladders or a tower scaffold (£80-£200 per week), but a two-storey house typically requires full scaffolding at £400-£1,000. Complex access — bay windows, dormers, conservatory roofs — increases the scaffolding price further.
- Number of coats: Most coatings require two coats for proper coverage and protection. If your walls are bare brick or a very dark colour being covered with a lighter shade, you may need a specialist primer plus two topcoats.
- Surface type: Smooth render is the easiest and cheapest to coat. Pebble dash, roughcast, and Tyrolean finishes require significantly more paint per m² (up to 30% extra) due to their textured surface, increasing both material and labour costs.
- Location: London and the South East command a 15-25% premium on labour rates compared to the national average. Coastal properties in Cornwall, Devon, or Scotland may need marine-grade coatings that cost 20-30% more than standard products.
Is exterior wall coating worth the investment?
For most UK homeowners, a quality exterior wall coating represents excellent value. A weatherproof system costing £3,000-£5,000 that lasts 20 years works out at £150-£250 per year — less than the cost of repainting with masonry paint every 5-7 years (which would total £4,000-£7,500 over the same period when you factor in scaffolding hire each time). Beyond the financial calculation, a properly coated exterior improves kerb appeal, can increase property value by 2-5%, and reduces ongoing maintenance headaches.
Before committing to any colour, use a digital preview to see exactly how your home will look. A wrong shade on 100 m² of exterior wall is an expensive mistake — and one that's entirely avoidable.
Try our free colour visualiser — upload a photo of your property, apply any Dulux Trade Weathershield, Sandtex, or Crown colour, and see a realistic preview in seconds. No sign-up required, works on any device, and helps you choose the perfect exterior wall coating colour with confidence.
