Applying a fresh coat of render can elevate both the aesthetic and protective qualities of your home. In this guide, we’ll compare Silicone Render and Monocouche Render using current EWI Store pricing, showing all necessary components and cost per square metre (m²). Prices exclude VAT.
Silicone Render Cost Breakdown
Silicone renders offer exceptional flexibility, crack resistance and an almost infinite range of colours.
Components required:
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Water-Based Substrate Primer (EWI‑301) – £15.74 for 5 L (covers ~20 m²) → £0.79/m²
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Premium Basecoat (EWI‑225) – £19.36 per 25 kg → estimated coverage 2.8 m² → £6.91/m²
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Fibreglass Mesh (165 g/m²) – £46.50 per 50 m² → £0.93/m²
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Topcoat Primer (EWI‑333) – £69.10 per 20 kg (covers 60 m²) → £1.15/m²
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EWI‑075 Silicone Render – £69.99 per 25 kg ready-to-use bucket → coverage ~10 m² → £7.00/m²
Total material cost:
£16.78/m² (ex VAT)
Monocouche Render Cost Breakdown
Monocouche is a through-coloured, scratch render. Slightly more budget-friendly.
Components required:
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Water-Based Primer (EWI‑301) – £0.79/m²
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EWI‑090 Monocouche Render – £11.99 per 25 kg bag → coverage ~1 m² → £11.99/m²
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Fibreglass Mesh (optional) – £0.93/m²
Total material cost:
£13.71/m² (ex VAT)
Additional Components: Beading
Beading (corners, stop, window reveals) typically costs around £2/m², depending on detailing.
Cost Comparison Table
| Render Type | Cost per m² (ex VAT) | Flexibility | Colour Options |
|---|---|---|---|
| Silicone Render | £16.78 + beading | Very High | Virtually Unlimited |
| Monocouche Render | £13.71 + beading | Moderate | Fixed Shade Range |
How to Calculate Your Total Cost
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Measure width × height of each external wall.
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Total the areas, no need to subtract windows/doors unless very large glazing.
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Multiply total area by the cost per m².
Example:
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Total wall area = 100 m²
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Silicone: 100 × £16.78 = £1,678 (ex VAT)
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Monocouche: 100 × £13.71 = £1,371 (ex VAT)
Add beading costs (£200 at £2/m²) to get your overall material estimate.
Choosing Between Renders
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Silicone Render (£16.78/m² + beading): premium finish, crack resistance, limitless colour options.
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Monocouche Render (£13.71/m² + beading): cost-effective, natural stone look, limited on cracking and colour choice.
EWI Store renders are BBA-approved, with a wide variety of colours and sample pots available.
Important Disclaimer
Please note that the costs outlined above are for materials only and do not include labour costs, scaffolding, or any additional components that may be required for specific property types (e.g., insulation, dash receivers, bonding agents). Every property is different, so we always recommend seeking a full assessment and quotation from a professional installer to ensure all necessary elements are accounted for.