Cost GuidesUpdated May 2026By TradeMatch Editorial Team·8 April 2026·Updated 12 April 2026·6 min read

External Rendering Costs UK 2026: Monocouche, Silicone & K-Rend

External rendering protects your walls from weather and transforms the look of your home. Here is what rendering costs in the UK.

Professional tradesperson completing quality work

Rendering Cost Breakdown

Render Type	Cost per m²	3-Bed Semi (total)
Sand & cement (traditional)	£30–£50	£2,500–£5,000
Monocouche (one coat)	£35–£55	£3,000–£5,500
Silicone render	£40–£65	£3,500–£6,500
K-Rend / Weber	£40–£60	£3,500–£6,000
Lime render	£45–£70	£4,000–£7,000
EWI with render	£80–£140	£7,000–£14,000

Scaffolding typically costs £400–£1,200 extra and is almost always required.

Which Render to Choose?

Silicone render (e.g. K-Rend, Weber) — The most popular modern choice. Self-cleaning, breathable, crack-resistant, available in many colours. Lasts 20–30 years.

Monocouche — Applied in one coat so labour is quicker. Through-colour means no painting needed. Good value for money.

Lime render — Essential for older/listed buildings. Breathable and flexible, allowing moisture to escape. More expensive and needs specialist application.

EWI (External Wall Insulation) — Combines insulation with render finish. Most expensive but dramatically improves energy efficiency. May qualify for ECO4 grant funding.

Frequently Asked Questions

How long does rendering last?

Modern silicone renders last 20–30 years with minimal maintenance. Traditional sand and cement render lasts 15–25 years but needs painting every 5–7 years. Lime render on older properties can last generations with proper maintenance.

Does rendering need planning permission?

Not usually for standard rendering on your own home. However, permission is needed if the property is listed, in a conservation area, or if the render significantly changes the external appearance.